Connection To Lan For Operation Management; Figure 1.1 Lan Control (Switching Of The Master Cm) - Fujitsu ETERNUS DX80 S2 User's Manual & Installation Instructions

Chapter 1 Preparation
1.1 Connection Preparation
1.1.2

Connection to LAN for Operation Management

The ETERNUS DX Disk storage system must be connected to the LAN for operation management during system
maintenance and operation management.
• Make sure to connect each controller to the LAN for operation management.
• The LAN ports of the ETERNUS DX Disk storage system support IPv4 and IPv6.
Note that an IPv6 network is used for an ETERNUS DX Disk storage system with firmware version V10L30
or later.
The network environment setup is performed during installation of the ETERNUS DX Disk storage system. IP
addresses must be prepared before the setup. Network devices that are used to connect the ETERNUS DX Disk
storage system to the LAN for operation management must also be prepared.
This section explains how the controller of the ETERNUS DX Disk storage system controls the LAN, the
necessary preparation for connection to the LAN for operation management, and notes on LAN connections.
1.1.2.1 LAN Control Controller (Master CM/Slave CM)
For a dual-controller type, the controller (CM) that is given the authority to manage the LAN is called the
Master CM and the other CM is called the Slave CM.
When an error occurs in the Master CM or LAN, the Master CM is switched automatically.
IP addresses of the LAN ports are not assigned to each CM. These IP addresses are assigned to the role of
master or slave. If the Master CM is switched, the same IP addresses are reused. Therefore, even if the Master
CM is switched and the physical port is changed, access can be maintained via the same IP addresses.

Figure 1.1 LAN control (switching of the Master CM)

CM#0
has failed
ETERNUS DX Disk storage system
ETERNUS DX Disk storage system
ETERNUS DX80 S2/DX90 S2 Disk storage system User's Guide -Installation-
Master
CM
IP address A
CM#0
Controller enclosure
The Master CM is switched.
Slave
CM
IP address A
CM#0
Controller enclosure
Copyright 2013 FUJITSU LIMITED
Slave
CM
CM#1
Master
CM
CM#1
When the Master CM is
switched, the IP addresses
of the previous Master CM's
are taken over by the new
Master CM.
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