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Huawei OceanStor 2000 V3 Series Features Manual

Hypermetro feature guide for block
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OceanStor V3 Series
V300R006
HyperMetro Feature Guide for Block
Issue
05
Date
2018-01-30
HUAWEI TECHNOLOGIES CO., LTD.

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Summary of Contents for Huawei OceanStor 2000 V3 Series

  • Page 1 OceanStor V3 Series V300R006 HyperMetro Feature Guide for Block Issue Date 2018-01-30 HUAWEI TECHNOLOGIES CO., LTD.
  • Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...

  • Page 3: About This Document

    Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. DANGER Indicates a potentially hazardous situation which, if not avoided, could result in death or serious injury. WARNING Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 4 This is the third official release. Synchronizes some software interface changes. Issue 02 (2017-06-01) This is the second official release. Optimized descriptions about section Impact and Restrictions. Synchronizes some software interface changes. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 5 OceanStor V3 Series HyperMetro Feature Guide for Block About This Document Issue 01 (2017-11-30) This issue is the first official release. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 6: Table Of Contents

    3.8 Arbitration Software Installation..........................50 4 Configuration..........................53 4.1 Configuration Process..............................54 4.2 Configuration Preparations............................56 4.3 Configuring Switch...............................57 4.4 Configure Quorum Server Software..........................57 4.4.1 Configuring the Arbitration Software (SUSE)......................57 Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 7 5.4.3 Synchronizing a HyperMetro Consistency Group....................127 5.4.4 Pausing a HyperMetro Consistency Group......................128 5.4.5 Switching the Prior/Non-prior for a HyperMetro Consistency Group..............128 5.4.6 Starting a HyperMetro Consistency Group Forcibly....................129 Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 8 A.2 How to Use the Document............................149 A.3 How to Obtain Help from Website..........................149 A.4 Ways to Contact Huawei............................149 B Glossary............................150 C Acronyms and Abbreviations....................151 Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 9: Feature Description

    Therefore, service continuity is critical to the construction of storage systems. Traditionally, one production center and one disaster recovery center are constructed, and the Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 10: License Requirements And Compatible Products

    HyperMetro is a value-added feature that requires a software license for use on both local and remote storage systems. Applicable products Product Series Product Model Version OceanStor 2000 V3 series OceanStor 2600 V3 V300R006 Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 11: Working Principle

    Local LUNs are LUNs that belong to the local storage system. Remote LUNs are LUNs that belong to the remote storage system. Dual-Write Dual-write enables the synchronization of application host I/O requests with both local and remote LUNs. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 12 After the creation of a HyperMetro pair, the local data center is by default the preferred site and the remote data center is the non-preferred site. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 13: Hypermetro Solution Overview

    Storage array B Switch Switch Switch Switch LAN/WAN Network of hosts and storage arrays Same-city network Quorum server between data centers HyperMetro replication network Quorum network Quorum site Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 14 Dual-switch networking must be used. l The HyperMetro replication network, storage-to-host network, and quorum network need to be physically isolated and common ports are not recommended. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 15 If the storage system in one data center malfunctions, the storage system in the other data center automatically takes over services without data Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 16 – Latency: RTT ≤ 50 ms – Bandwidth: ≥ 10 Mbit/s l The HyperMetro replication network, storage-to-host network, and quorum network need to be physically isolated and common ports are not recommended. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 17: Arbitration Mechanism

    VMware vSphere/ FusionSphere FT or HA to achieve high availability. l Huawei Enterprise Cloud (HEC) can be used as a quorum server. When the HEC is used as the quorum server, apply for a VM (including the CPU, memory, disk, and OS).
  • Page 18 To be A continues HyperMetro Pair array in data synchroni providing services center B (non- while B stops. Data center A Data center B preferred site) malfunctions. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 19 Both A and B Quorum server server breaks continue providing down. services. HyperMetro Pair NOTE HyperMetro Data center A Data center B automatically switches to static priority arbitration. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 20 NOTE quorum server You must forcibly HyperMetro Pair both start B to resume providing services for malfunction. Data center A Data center B hosts. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 21 NOTE between the HyperMetro Data center A Data center B quorum server automatically switches to static and one priority arbitration. storage array is down. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 22 Quorum server Quorum server (active) (standby) array synchroni server runs properly. malfunctions. B continues HyperMetro providing services Pair while A stops. Data center A Data cente B Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 23 HyperMetro providing services Pair link between while A stops. one storage Data center A Data cente B array and the active quorum server both break down. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 24 A and B may win the arbitration and continue providing services. NOTE A has arbitration priority, so generally A continues providing services while B stops. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 25: Hypermetro I/O Processing Mechanism

    In the following figure, the write I/O accesses the local storage system, and the local storage system writes data to the remote storage system for dual-write purposes. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 26 Data on the LUNs of both storage systems is synchronized in real time and both are accessible to hosts. If the storage system in one data center malfunctions, the storage system in the other data center continues providing host services alone. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 27: Functions Of A Hypermetro Consistency Group

    If the customer needs to use non-Huawei multipathing software on the application server, the function of Uses third-party multipath software for initiators must be enabled on Huawei storage.
  • Page 28 Without a HyperMetro Consistency Group If LUNs are not added to a HyperMetro consistency group, the possibility of data loss is quite high for these LUNs, as shown in Figure 1-4. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 29 Remote time. LUN03 LUN03 With a HyperMetro Consistency Group If LUNs are added to a HyperMetro consistency group, no data is lost, as shown in Figure 1-5. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 30: Impact And Restrictions

    Consistency group 01 1.4 Impact and Restrictions This section describes the impact and restrictions of HyperMetro feature. Network Restrictions For details about network restrictions, see HyperMetro Solution Overview. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 31 HyperMetro relationship are the same. In addition, the hardware configurations of the two storage systems are the same. l The HyperMetro license must be available for the storage arrays in two data centers. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 32: Application Scenarios

    DR center is constructed to expand the existing solution to the Disaster Recovery Data Center Solution (Geo-Redundant Mode). Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 33 Besides, HyperMetro + synchronous remote replication network can be achieved. However, due to distance restrictions, synchronous remote replication is used to implement short- distance DR. Figure 1-7 shows the network. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 34 Figure 1-7 Network of the 3DC with HyperMetro and synchronous remote replication Site A Site B HyperMetro Storage system Storage system Same-city Production center production center Synchronous remote replication Site C Storage system Optical fiber Same-city DR center Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 35: Planning

    This document describes how HyperMetro works and related operations on storage devices. For details about data planning and service configuration process, see BC&DR Solution Product Documentation V200R001 (Active-Active Data Center). Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 36: Installation

    3.8 Arbitration Software Installation This section describes how to install the arbitration software. Quorum server software needs to be installed only when a quorum server is used for HyperMetro. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 37: Installation Process

    3.2 Preparations for Installation Preparations before installing devices include preparing tools and meters, checking the installation environment, and unpacking and checking goods. Sufficient preparation ensures a safe and proper installation. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 38: Preparing Tools, Meters, And Documentation

    Installs or removes a floating nut. Antistatic clothing Prevents operators against electrostatic charges. ESD glove Prevents operators against electrostatic charges. ESD wrist strap Prevents operators against electrostatic charges. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 39 OceanStor SNS2124&SNS2224&SNS2248 Fibre Channel enterprise/, enter UltraPath Switch V100R002CXX User Guide in the search bar, and press Enter to view or download the document of the relevant version. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 40: Quick Checklist For The Installation Environment

    The floor can meet the requirements for the bearing weight. The cable slot, cable ladder, and cable holes are complete or ready. The decoration is complete. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 41 – SSDs: –305 m to +12192 m (–1000.64 ft. to +39999.51 ft.) Particle l ISO 14664-1 Class8. Contaminants l You are advised to ask a professional organization to monitor the particle contaminants in the equipment room. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 42 If the temperature in the room exceeds 35°C, you are recommended to install air conditioners (which can be restarted after power-off). Do not let the air conditioner blow directly toward the devices. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 43 The equipment room must be provided with lightning protection conductors such as the lightning rod or lightning belt. The lightning conductors share the ground bars with the protection ground cables of the equipment room. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 44 AC power supplies: greater than 16 A l DC power supplies: greater than 32 A Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 45 Confirm the delivery time and installation time in advance, for example, from 8:00 a.m. to 6:00 p.m. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 46: Device Installation

    SNS2124&SNS2224&SNS2248 Fibre Channel Switch V100R002C00 User Guide. NOTE If you use other switches, see the installation guide specific to the switches at your site to install them. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 47 For details about the device layout, see Figure 3-2 Figure 3-3. The device models and number of devices depend on the onsite requirements. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 48 Filler panel Filler panel Filler panel Filler panel Filler panel Filler panel Disk Disk Filler panel Filler panel Filler panel Filler panel enclosure Filler panel enclosure Filler panel Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 49: Cable Connection

    HyperMetro replication network, same-city data center network, and quorum network. Figure 3-4, Figure 3-5 Figure 3-6 show how switches, controller enclosures, and service hosts are connected using cables in and across data centers. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 50 OceanStor V3 Series HyperMetro Feature Guide for Block 3 Installation Figure 3-4 Cable connections in and across data centers (2 U storage device) Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 51 OceanStor V3 Series HyperMetro Feature Guide for Block 3 Installation Figure 3-5 Cable connections in and across data centers (3 U storage device) Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 52 The quorum site supports two quorum servers in active/standby mode for V300R006C10 and later versions. Fibre Channel networking is used as an example to explain cable connection principles. For details, see Table 3-5. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 53 Business Continuity and Disaster Recovery Solution V200R001CXX User Guide (Active-Active Mode). For details about how to obtain the documentation, see 3.2.1 Preparing Tools, Meters, Documentation. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 54: Power-On

    Otherwise, do not power on them. Power-on Principles Both parties (Huawei and the customer) must be at the power-on site. Devices can be powered on only after both parties confirm the power-on operation.
  • Page 55 The DC power cables shipped with the storage device are black and blue, and the PGND cable is olive or yellow. Power cables and grounding cables use the entire copper core without a joint. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 56 Power-on Procedure Step 1 Connect grounding cables. Huawei is responsible for connecting grounding cables of storage devices and cabinets and checking whether ground resistance connectors are connected firmly. Huawei is responsible for testing the ground resistance between storage cabinets and the equipment room and checking whether ground resistance connectors are connected firmly.

  • Page 57: Storage Array Initialization

    Context Multipathing software must be installed for the HyperMetro solution. You can use either Huawei UltraPath or third-party multipathing software. In terms of multipathing, UltraPath is recommended for HyperMetro. UltraPath can identify host locations so that hosts can access the nearest storage array, reducing cross- site accesses and latency while improving access efficiency and storage performance.

  • Page 58: Arbitration Software Installation

    Host Connectivity Guide for corresponding operating systems to install the third- party multipathing software. For example, if you want to obtain HUAWEI SAN Storage Host Connectivity Guide for Oracle, log in to http://support.huawei.com/enterprise/, enter Host Connectivity Guide Oracle in the search bar, and press Enter to view or download the document of the relevant version.
  • Page 59 Use the quorumAdmin user to log in to the quorum server. NOTE The default password of the quorumAdmin user is Huawei@SYS3. You are advised to periodically change your password for your account's security. Run the su root command to switch to user root.
  • Page 60 After the installation is successful, you can directly close the quorum server's CLI window. If you want to uninstall the arbitration software, see 5.3.6 Uninstalling the Arbitration Software. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 61: Configuration

    After configured, you can view the status of the data on the local and remote storage systems to check whether HyperMetro between the local and remote storage systems is successful. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 62: Configuration Process

    This operation is only performed on Consistency Group. the local storage system. Verifying the Configuration Mandatory Optional Mandatory Optional item item sub-item sub-item Table 4-1 describes the configuration procedure of HyperMetro. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 63 Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 64: Configuration Preparations

    This section describes prerequisites and documents that you must prepare before you configure HyperMetro. Prerequisites for configuring HyperMetro are as follows: All devices have been installed. The IP/Fibre Channel network is working properly between the two data centers. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 65: Configuring Switch

    VMs. In this example, arbitration software is deployed on VMs, and two ports of the quorum server are not bonded. Figure 4-2 Table 4-2 show configuration requirements. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 66 Run the vi command to open the configuration file of the network adapter used by the quorum server for arbitration. The following uses network adapters eth1 and eth2 for Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 67 Enter the CLI of the quorum server, go to any directory, run the vi /etc/sysconfig/ SuSEfirewall2 command in any directory to open the firewall configuration file and add the port ID of FW_SERVICES_EXT_TCP to 30002. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 68 In the CLI of the arbitration software, run the add server_ip command to add the service IP address and port ID of the quorum server to the arbitration software for management. admin:/>add server_ip ip=192.168.6.31 port=30002 Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 69 Import the certificates to the arbitration software. In the CLI of the arbitration software, run the import tls_cert ca=qs_cacert.crt cert=qs_cert.crt command to import the certificates to the arbitration software. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 70: Configuring The Arbitration Software (Red Hat/Red Flag/Neokylin/Centos)

    This section describes how to configure the arbitration software in Red Hat, Red Flag, NeoKylin, or CentOS. Prerequisites The arbitration software must be configured in user mode. Procedure Step 1 Prepare for the configuration. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 71 In this example, arbitration software is deployed on physical machines, and two ports of the quorum server are not bonded. Table 4-5 lists configuration examples. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 72 192.168.6.31 Bcast:192.168.255.255 Mask:255.255.255.0 inet6 addr: fe80::a00:27ff:fe2e:fba6/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:43285954 errors:0 dropped:5051127 overruns:0 frame:0 TX packets:5819 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 73 If the ACCEPT tcp -- anywhere anywhere tcp dpt:pago-services2 information is displayed in the command output, the firewall configuration takes effect. XXX@Linux:~# iptables -L ACCEPT anywhere anywhere tcp dpt:pago-services2 Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 74 In the CLI of the arbitration software, run the export tls_cert command to export the device information. The qs_certreq.csr file is generated in the /opt/quorum_server/ export_import directory of the quorum server. admin:/>export tls_cert Command executed successfully. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 75 Time : XXXX-XX-XX/15:11:15 UTC+08:00 In the CLI of the arbitration software, run the add white_list sn=? command to add the storage system SN to the arbitration software for management. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 76: Configuring The Arbitration Software (Ubuntu)

    VMs, and two ports of the quorum server are not bonded. Figure 4-4 Table 4-6 show configuration requirements. Figure 4-4 Configuration requirements of virtual network adapters Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 77 //The parameter must be set to auto. iface eth1 inet static address 192.168.6.31 gateway 192.168.6.1 netmask 255.255.255.0 auto eth2 //The parameter must be set to auto. iface eth2 inet static address 192.168.7.31 Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 78 ALLOW Anywhere and 30002/tcp(v6) ALLOW Anywhere (v6) information is displayed in the command output, the firewall configuration takes effect. XXX@ubuntu:~$sudo ufw status Action From ------ ---- 30002/tcp ALLOW Anywhere Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 79 In the CLI of the arbitration software, run the export tls_cert command to export the device information. The qs_certreq.csr file is generated in the /opt/quorum_server/ export_import directory of the quorum server. admin:/>export tls_cert Command executed successfully. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 80 : 2015-06-27/15:11:15 UTC+08:00 In the CLI of the arbitration software, run the add white_list sn=? command to add the storage system SN to the arbitration software for management. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 81: Configuring Basic Storage Services

    LUNs mapping to a host. (xx indicates the host ID). Create a LUN This operation is performed on both the local and the peer remote group. storage systems. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 82: Creating San Hypermetro

    I adjust parameters to reduce the I/O latency and achieve the optimal performance?. 4.6 Creating SAN HyperMetro This chapter describes how to create a SAN HyperMetro. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 83: Checking The License File

    20 GB 10 GB 10 GB Procedure Step 1 Log in to DeviceManager. Step 2 Choose Settings > License Management. Step 3 Check the active license files. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 84: Adding A Remote Device

    When a large number of remote storage devices exist, you can select desired remote devices through their WWNs. Click Home on DeviceManager. In the Basic Information area, you can view WWN. Step 4 Set up the connection to the remote device. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 85 IP address of the [Example] Ethernet port on the 192.168.26.12 remote storage device. NOTE This host port cannot be used for Ethernet port bonding. Otherwise, the HyperMetro service fails. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 86 Run the show port general port_id=XXX command. When the status of Fast Write Enable in the output is Yes, this function is successfully enabled. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 87: Creating A Quorum Server

    Procedure Step 1 Log in to DeviceManager. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 88 If the port type is Management port, select Port. (To use a management network port as an arbitration port, the storage system version must be V300R006C10 or later.) Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 89: Creating A Hypermetro Domain

    Context A HyperMetro Domain supports one quorum server at most. This operation is only performed on the local storage system. Procedure Step 1 Log in to DeviceManager. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 90: Creating A Hypermetro Pair

    The remote LUN of HyperMetro pair is not mapped to host. Context After HyperMetro pair is created, the WWN of the remote LUN is changed to the WWN of the local LUN. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 91 Local and remote LUNs must have the same number of sectors. Step 7 Click Next. Step 8 Set the data synchronization properties for the HyperMetro. Table 4-12 describes related parameters. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 92 This value is applicable to scenarios where the service load is light. The speed is normally above 100 MB/s. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 93 Choose Select a consistency group and add HyperMetro pairs to it. Choose the consistency group you want to add the HyperMetro pair, or click Create HyperMetro Consistency Group. Table 4-13 describes related parameters. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 94 Table 4-13 Consistency group parameters Parameter Description Example Value Name The name of the HyperMetroGroup_001 HyperMetro consistency group. Description The description of the — HyperMetro consistency group. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 95 This value is applicable to scenarios where the service load is light. The speed is normally above 100 MB/s. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 96: Creating A Hypermetro Consistency Group

    The HyperMetro pairs in a HyperMetro consistency group must belong to the same HyperMetro domain. HyperMetro pairs in a HyperMetro consistency group must have the same Data Synchronization Direction and Pair Running Status as the HyperMetro consistency group. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 97 HyperMetro domain in the dialog box that is displayed. Step 5 Click Next. Step 6 Set the properties for the HyperMetro consistency group. Table 4-15 describes related parameters. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 98 This value is applicable to scenarios where the service load is light. The speed is normally above 100 MB/s. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 99: Configure A Multipathing Policy For Host

    Context Multipathing software must be installed for the HyperMetro solution. You can use either Huawei UltraPath or third-party multipathing software. In terms of multipathing, UltraPath is recommended for HyperMetro. UltraPath can identify host locations so that hosts can access the nearest storage array, reducing cross- site accesses and latency while improving access efficiency and storage performance.

  • Page 100: Configuring A Ultrapath Policy For Host

    Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 101 To set the HyperMetro working mode of virtual LUN 0 to balance and specify array 0 as the storage array where the first slice section resides, run set hypermetro workingmode=balance primary_array_id=0 vlun_id=0. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 102 I/Os are preferentially delivered. When -m is set to balance, the value of the parameter indicates the storage array where the first slice section resides. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 103 If the following command output is displayed, the configuration is successful. Otherwise, execute configuration again. Figure 4-5 shows the command output in vSphere as an example. HyperMetro WorkingMode : read write within primary array Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 104 PDL Mode is on, the APD to PDL function of ESXi hosts is enabled. vSphere Security documentation for more information ~ # esxcli upadm show upconfig =============================================================== Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 105: Optional) Configuring A Third-Party Multipathing Policy For Host

    This section introduces the operation procedure for configuring third-party multipathing software. Context If the customer needs to use non-Huawei multipathing software (such as HP-UNIX NMP and PV-Links, OpenVMS DM-MultiPath, and Oracle DM-MultiPath) on the application server, Issue 05 (2018-01-30) Huawei Proprietary and Confidential...
  • Page 106 Step 4 Modify the properties of the initiator. Figure 4-6 lists related parameters. NOTE You need to restart the host after modifying the host initiator information for the configuration to take effect. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 107 4 Configuration Figure 4-6 Modify Initiator For third-party multipathing policies of different operating systems, see the HyperMetro Configuration Guide for Huawei SAN Storage Using OS Native Multipathing Software to set the parameters in Figure 4-6. Step 5 Confirm the modification of the initiator's properties.

  • Page 108: Verifying The Configuration

    OceanStor V3 Series HyperMetro Feature Guide for Block 4 Configuration This document only describes the configuration required for connecting Huawei storage to third-party multipathing software. For details about third-party multipathing software configuration for host, refer to the HyperMetro Configuration Guide for Huawei SAN Storage Using OS Native Multipathing Software.

  • Page 109: Management

    5.1 Managing a HyperMetro Pair After creating a HyperMetro, you may need to manage it due to service adjustment, disaster recovery, data testing, or new data security requirements. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 110: Viewing Hypermetro Pair Information

    HyperMetro. Pair Health Status Displays whether a pair of [Example] local and remote resources Normal in a HyperMetro are healthy. Possible values can be Normal and Fault. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 111 Whether the local resource [Example] is provided by the preferred Preferred site. Activation Status Activation status of site. The [Example] value can be Active or Active Passive. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 112 Local Resource Host Access Host access status of a local [Example] Status resource. Read-Write Remote Resource Host Host access status of a [Example] Access Status remote resource. Read-Write Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 113 Name of a local device. None Local Resource Name of the local resource. None Remote Resource Name of the remote None resource. Remote Device Name of a remote device. None Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 114 I/O latency of the two storage arrays is greater than the isolation switch. The storage array with the longer write I/O latency will stop providing services. ----End Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 115: Modifying Hypermetro Pair Properties

    Step 5 On the General tab page, you can view the link information about the HyperMetro pair. Click the Synchronize Information tab to modify related parameters. Table 5-3 explains the related parameters. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 116 Automatic and Manual. synchronizes data after a HyperMetro fault is rectified. l Automatic: The system automatically synchronizes data. l Manual: The synchronization operation must be performed manually. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 117: Synchronizing A Hypermetro Pair

    Confirm the information in the dialog box and select I have read and understand the consequences associated with performing this operation.. Then click OK. The Success dialog box is displayed, indicating that the operation succeeded. Click OK. ----End Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 118: Suspending A Hypermetro Pair

    Force Start or Paused (The connection of devices is normal). Procedure Step 1 Log in to DeviceManager. Step 2 Choose Data Protection > HyperMetro > HyperMetro Pair. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 119: Forcibly Enabling A Hypermetro Pair

    Sync Rate : Highest Start Time : 2017-11-24/14:24:24 UTC+08:00 End Time : 2017-11-24/14:24:24 Consistency Group ID Consistency Group Name Isolation Switch : Close Isolation Threshold(ms) : 1000 Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 120: Deleting A Hypermetro Pair

    You can delete the HyperMetro pair only when its Pair Running Status is Paused, Force Start or To be synchronized, and its secondary LUNs are not mapped. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 121: Expanding The Capacity Of A Hypermetro Lun

    Offline expansion (In scenarios where the CPU usage and disk usage exceed 50%, the HyperMetro replication bandwidth is insufficient, or the distance between data centers exceeds 25 km). Stop upper-layer services. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 122: Managing Hypermetro Domains

    On the host, scan for LUNs. ----End 5.2 Managing HyperMetro Domains By managing HyperMetro domains, you can modify quorum servers configured in HyperMetro domains, and delete unnecessary HyperMetro domains as required. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 123: Viewing Hypermetro Domain Information

    When a quorum server in a HyperMetro domain has been modified, you can modify the HyperMetro domain to modify the quorum server in the domain. Prerequisites A HyperMetro domain has been successfully configured for the storage system. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 124: Deleting A Hypermetro Domain

    Step 5 Select I have read and understand the consequences associated with performing this operation. and click OK. Step 6 The Execution Result dialog box is displayed indicating that the operation succeeded. Step 7 Click Close. ----End Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 125: Managing Quorum Servers

    Controller port of a local device connecting to a quorum server. IP Address The IP address of a quorum server. Running Status Running status of a link. ----End Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 126: Modifying Quorum Server Information

    The port ID ranges from 1 to 65535. Step 5 Click OK. ----End 5.3.3 Adding a Link Through this operation, you can add a link for a quorum server. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 127: Removing A Link

    Through this operation, you can delete quorum servers that have been created. Prerequisites The quorum server has not been created to the Hypermetro domain. Procedure Step 1 Log in to DeviceManager. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 128: Uninstalling The Arbitration Software

    QuorumServer ########################################### [100%] Do you want to backup configuration and log? <Y|N>:y QuorumServer install success completed. Step 3 (Optional) Check whether the arbitration software is uninstalled successfully. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 129: Managing A Hypermetro Consistency Group

    Table 5-8 describes related parameters. Table 5-8 HyperMetro consistency group parameters Parameter Description Name The name of the HyperMetro consistency group. The ID of the HyperMetro consistency group. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 130 HyperMetro consistency group fault is rectified. l Automatic: The system automatically synchronizes data. l Manual: The synchronization operation must be performed manually. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 131 HyperMetro storage arrays. Step 4 Click the HyperMetro consistency group you want view, in HyperMetro Pair area, view the HyperMetro pair information. Table 5-9 describes related parameters. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 132: Modifying The Properties Of A Hypermetro Consistency Group

    5.4.2 Modifying the Properties of a HyperMetro Consistency Group This operation enables you to change the name, description, recovery policy and rate of a HyperMetro consistency group. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 133 Table 5-10 Parameters of Consistency Group Parameter Description Setting Name The name of the [Example] HyperMetro consistency HyperMetroGroup_005 group. Description The description of the [Example] HyperMetro consistency — group. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 134 Automatic system automatically synchronizes data after a HyperMetro fault is rectified. l Automatic: The system automatically synchronizes data. l Manual: The synchronization operation must be performed manually. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 135: Synchronizing A Hypermetro Consistency Group

    HyperMetro Pair > HyperMetro Consistency Group. Step 3 Select the HyperMetro consistency group, and click Synchronize. The security alert dialog box is displayed. Step 4 Confirm the synchronization operation. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 136: Pausing A Hypermetro Consistency Group

    Prerequisites The Running Status of the consistency group you want to pause must be Paused, Normal, Synchronizing, Force Start, or To be synchronized. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 137: Starting A Hypermetro Consistency Group Forcibly

    Carefully read the contents of the dialog box. Then click the check box next to the statement I have read and understand the consequences associated with performing this operation. and click OK to confirm the information. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 138: Adding A Hypermetro Pair

    HyperMetro > HyperMetro Pair > HyperMetro Consistency Group. Step 3 Select the HyperMetro consistency group you want to remove HyperMetro pair, and choose More > Remove HyperMetro Pair. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 139: Deleting A Hypermetro Consistency Group

    OK to confirm the information. The Execution Result dialog box is displayed indicating that the operation succeeded. Step 6 Click Close. ----End Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 140: Importing Certificates

    Confirm the information of the dialog box and select I have read and understand the consequences associated with performing this operation.. Then click OK. The Success dialog box is displayed. Click OK. The certificate list shows imported certificates. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 141 NOTE The value ranges from 7 to 180. New Private Key Encryption Password Encrypted password of a new private key file. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 142 No. of a CRL Name Name of a CRL Status Status of a CRL, which can be Valid, Not exist and Invalid. Expire time Time when a CRL expires ----End Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 143: Faqs

    6.8 How Can I Use OVA Templates to Quickly Deploy Virtual Quorum Servers? When a quorum server virtual machine (VM) becomes faulty, you can use an OVA template to deploy it again quickly. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 144: What Can I Do If A Quorum Link Fails To Be Added Because The Hypermetro Arbitration Certificate Becomes Invalid Or The System Time Becomes Abnormal

    Log in to OceanStor DeviceManager of the storage array. Choose Settings > Storage Settings > Value-added Service Settings > Credential Management to go to the certificate management page. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 145: Active And Standby Ip Ports Are Configured On The Quorum Server. After The Port In Use Is Down, The Quorum Server Goes Offline. Why

    If the quorum link still fails to be added after the system time of the storage array is modified, go to Step Step 5 Contact Huawei technical support. ----End 6.2 Active and Standby IP Ports Are Configured on the Quorum Server.

  • Page 146: How Do I Power Off Active-Active Storage Systems And Resume The Hypermetro Service

    (Optional) Power off switches. The networking varies with the specific services. Based on actual service requirements, determine whether to power off switches. Step 2 Resume the HyperMetro service. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 147: When Both The Hypermetro And Remote Backup Services Are Created, The Excessively Low Link Bandwidth Between Storage Systems Causes The Remote Backup Service To Fail

    Step 1 Increase the replication link bandwidth or the number of replication links to ensure that the replication network bandwidth is higher than or equal to the peak service bandwidth. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 148: How Can I Query Hypermetro Lun Identifiers

    Step 2 Check whether the remote backup service is normal. If the remote backup service is normal, no further action is required. If the remote backup service is abnormal, contact Huawei technical support. ----End 6.5 How Can I Query HyperMetro LUN Identifiers?

  • Page 149: In The Sql Server Database Scenario, How Can I Adjust Parameters To Reduce The I/O Latency And Achieve The Optimal Performance

    Select the quorum server VM, right-click, and choose Edit Settings from the shortcut menu. Click the Hardware tab. Select Network adapter. Record the MAC Address displayed on the right side. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 150 You can deploy a new quorum server VM by importing an OVA template. Step 1 Import an OVA template. Choose File > Deploy OVF Template..Click Browser and select an OVA template from Deploy from a file or URL. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 151 Step 2 Configure the MAC addresses for the new VM. Select the new VM. In the Resources area, right-click datastore and choose Browse Datastore from the shortcut menu. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 152 XXX is the name of the new VM. Edit the .vmx file. Change the MAC addresses in the file to the same values as the original VM's MAC addresses. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 153 If the quorum server is online, the configuration is correct and no further action is required. If the quorum server is offline, its MAC addresses are incorrect and you must reconfigure them. ----End Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 154: Troubleshooting

    Step 1 Check whether the white list of the new quorum server contains the SN of the storage array. On the quorum server, run the qsadmin command to go to the CLI of the quorum server. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 155 After replacing the certificates, add the quorum link again. – If the link is added successfully, no further action is needed. – If the link fails to be added, contact Huawei technical support. ----End Suggestion and Summary...

  • Page 156: A How To Obtain Help

    Huawei. A.2 How to Use the Document Huawei provides guide documents shipped with the device. The guide documents can be used to handle the common problems occurring in daily maintenance or troubleshooting. A.3 How to Obtain Help from Website...

  • Page 157: Making Debugging Preparations

    Troubleshooting level and required solution deadline A.1.2 Making Debugging Preparations When you contact Huawei for help, the technical support engineer of Huawei might assist you to do certain operations to collect information about the fault or rectify the fault directly.

  • Page 158: B Glossary

    In the search field, enter a product model, and select a path from the paths that are automatically displayed to go to the document page of the product. Browse or download the OceanStor V3 Series V300R006 Glossary. Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

  • Page 159: C Acronyms And Abbreviations

    Acronyms and Abbreviations Block Pointer Command Line Interface Central Processing Unit Fibre Channel Graphical User Interface Input/Output Logical Unit Number RAID Redundant Arrays of Independent Disks Redirect on Write Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.
  • Page 160 OceanStor V3 Series HyperMetro Feature Guide for Block C Acronyms and Abbreviations Serial Attached SCSI SCSI Internet Small Computer Systems Interface Solid State Drive Issue 05 (2018-01-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd.

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