Avago Technologies Cache Protection for RAID Controller Cards - Manual (Page 6)

Avago Technologies
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Cache Backup Products for MegaRAID SAS+SATA RAID Controllers User Guide
May 2015 Chapter 1: Introduction
MegaRAID Battery Backup Units Matrix
controller, it flushes the unwritten data preserved in the cache to the drive through the new controller. For more
information, see
Section 3.4, Transferring Cached Data from a Failed Controller , on page 130 .
1.1.4 RAID Cache Module
The RAID Cache Module 01 (RCM01) is a memory module used with the LSIiBBU09 unit. The RCM01 module, which is
attached to a RAID controller, connects by cable to a LSIiBBU09 unit. The LSIiBBU09 unit is then installed remotely on
the system chassis.
1.1.5 CacheVault Modules
The remote CVPM module provides the power to offload cached data from the DRAM to the nonvolatile flash memory
on the CVFM module if a power failure or outage occurs. The DRAM contents are then restored to the CVFM module
the next time the RAID controller is powered. Cached data can then be written to the storage devices.
CacheVault flash technology virtually eliminates the hardware maintenance associated with batteries, offers lower
total cost of ownership over the life of the controller, and provides more environmentally friendly cache protection, all
while maintaining optimal RAID performance.
1.2 MegaRAID Battery Backup Units Matrix
Avago offers several battery designs in the MegaRAID SAS RAID controller family, as listed in the following table. This
table shows which MegaRAID SAS RAID controllers use each iBBU model and how they are connected.
Table 1 MegaRAID Battery Backup Unit Matrix
BBU Product
Name
Description For RAID Controllers
LSIiBBU01 (NiMH) Intelligent BBU, Nickel Metal Hydride (NiMH)
Technology  MegaRAID SAS 8888ELP (Remote connect option)
LSIiBBU01 (LiON) Intelligent BBU, Lithium ion (LiON) Technology.
Compatible with backup auxiliary power source.
 MegaRAID SAS 8308ELP (Remote connect option)
 MegaRAID SAS 8344ELP (Remote connect option)
 MegaRAID SAS 84016E (Remote connect option)
LSIiBBU05 (NiMH) Intelligent BBU, NiMH Technology.
Compatible with backup auxiliary power source.
 MegaRAID SAS 8704ELP (Daughtercard)
 MegaRAID SAS 8708ELP (Daughtercard, no auxiliary power
capability)
 MegaRAID SAS 8708E (Daughtercard)
 MegaRAID SAS 8888ELP (Remote connect option)
LSIiBBU05 (LiON) Intelligent BBU, LiON Technology.
Compatible with backup auxiliary power source.
 MegaRAID SAS 8704ELP (Daughtercard)
 MegaRAID SAS 8708ELP (Daughtercard, no auxiliary power
capability)
 MegaRAID SAS 8708E (Daughtercard)
 MegaRAID SAS 8888ELP (Remote connect option)
 MegaRAID SAS 8704EM2 (Remote connect option)
LSIiBBU06 Intelligent BBU, LiON Technology.
Compatible with backup auxiliary power source.
 MegaRAID SAS 8708EM2 (Daughtercard)
 MegaRAID SAS 8708EM2 (Remote connect option)
 MegaRAID SAS 8704EM2 (Remote connect option)