Fujitsu Siemens Computers S60 - Manual (Page 63)

U41221-J-Z156-1-74 55
Plug-in Board Modules The FFx-RAID Controller Module
Ê Install the second FFx-RAID controller module in the free slot as module 1
(see figure 4 on page 20).
Ê Switch the storage subsystem OFF and ON again.
Ê Configure both FFx-RAID controller modules identically.
Ê Reboot the host system.
8.1.5 The FFx-BBU (Battery Backup Unit) Module
The purpose of the FFx-BBU module is to provide AC glitch ride-through
wherein power loss is momentary for maintaining cache data content.
A short power loss cycle may result in loss of FFx-RAID controller availability
while the controllers re-boot. The FFx-BBU module guaranties that in this time
no cache memory data will be lost.
Depending on the cache memory size and the battery condition the
FFx-BBU module is capable to maintaining cache memory content for many
hours.
V
CAUTION!
The FFx-BBU module is not intended to protect memory contents in the
event of accidental removal while the FFx-RAID controller module is in
operation. A normally operating FFx-RAID controller module should be
shut down prior to removal from the system.