Technical Specifications - Lenovo ServeRAID M5110 Product Manual

MegaRAID SafeStore support for self-encrypting drive (SED) services
MegaRAID SafeStore encryption services offer instant secure erase and local key management for
self-encrypting drives. This technology represents a significant step forward in securing data on a
disk drive from any unauthorized access or modification resulting from theft, loss, or repurposing of
drives. Instant secure erase permanently removes data when repurposing or decommissioning
SEDs. SafeStore local key management provides the necessary management and protection of
SEDs using a simple pass phrase, security key identifier, and security key file that can be set and
applied to all SEDs assigned to a ServeRAID adapter. This feature removes the complexity of
managing each SED's unique encryption key, and it essentially relieves the administrator of most of
the daily tasks of securing data. The SafeStore is part of any RAID 5 upgrade that is available:
81Y4544, 81Y4484, 81Y4487, 81Y4559, or 47C8670.
MegaRAID flash cache protection
MegaRAID flash cache protection uses NAND flash memory powered by a supercapacitor to
protect data stored in the controller cache. This module eliminates the need for a lithium-ion battery
commonly used to protect DRAM cache memory on PCI RAID controllers. To avoid the possibility
of data loss or corruption during a power or server failure, flash cache protection technology
transfers the contents of the DRAM cache to NAND flash using power from the flash power module.
After the power is restored to the RAID controller, flash cache protection technology transfers the
contents of the NAND flash back to the DRAM, which will eventually be flushed to disk.
MegaRAID FastPath SSD performance acceleration
MegaRAID FastPath software provides high-performance I/O acceleration for SSD-based virtual
drives by exploiting an extremely low latency I/O path to increase the maximum I/O per second
(IOPS) capability of the controller. This feature boosts the performance of applications with a highly
random data storage access pattern, such as transactional databases.
The feature is activated by enabling M5100 Series Performance Accelerator (90Y4273). This is a
Features on Demand upgrade and only one upgrade is needed per server; all M5100 and M5200
series adapters installed in the server will have this upgrade enabled automatically.
MegaRAID CacheCade SSD caching for traditional hard drives
MegaRAID CacheCade read/write software is designed to accelerate the performance of hard disk
drive (HDD) arrays with only an incremental investment in solid-state drive (SSD) technology. The
software enables SSDs to be configured as a dedicated pool of controller cache to help maximize
the I/O performance for transaction-intensive applications, such as databases and web serving.
CacheCade software tracks data storage access patterns and identifies the most frequently
accessed data. The hot data is then automatically stored on the solid-state storage devices that are
assigned as a dedicated cache pool on a ServeRAID controller with the M5100 Series SSD Caching
feature (90Y4318) enabled.
CacheCade is a Features on Demand upgrade and only one upgrade is needed per server; all
M5100 and M5200 series adapters installed in the server will have this upgrade enabled
automatically.
Note: Not all SSDs support the CacheCade feature. For details, refer to the following web page:
https://support.lenovo.com/us/en/documents/MIGR-5094754

Technical specifications

ServeRAID M5110 and M5110e SAS/SATA Controllers (withdrawn product) 5