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Modular RAID Controllers
Modular RAID 6Gb/s (SAS2.0)
4.5.5 Installing an optional FBU
4.5.5.1 Features
Using the LSI MegaRAID® CacheVault™ Technology offers better protection
for controller cache with our eco-friendly, low-maintenance 6Gb/s LSI
MegaRAID based controllers featuring CacheVault Technology.
This technology offloads data stored in the LSI MegaRAID based controller
cache to the NAND flash in the event of a power failure or other system
occurrence where the contents of controller cache are most at risk.
In addition, CacheVault technology eliminates the need for lithium ion (Li-ion)
batteries, traditionally used to protect DRAM cache memory on PCI RAID
controllers.
CacheVault technology offers:
CacheVault technology transfers the contents of the DRAM cache to NAND
flash using power from the supercap module in the event of a power or server
failure. With a traditional battery backup unit, after a limited time without
restored power, the cached data is lost. However, CacheVault technology safely
stores the contents of DRAM on NAND flash for up to three years.
4.5.5.2 Installation
The FBU supports remote connection to the Modular RAID Controller "PY SAS
RAID HDD Module (D2816)". The FBU is directly connected to the RAID
controller.
I Because server chassis vary, there is no standard mounting option that
is compatible with all the different system configurations. Refer to your
server’s Options Guide or Upgrade and Maintenance Manual for
mounting details.
To install the FBU to the RAID controller, proceed as follows:
Ê Ground yourself.
Ê Remove the FBU from its package.
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