Fujitsu Siemens Computers S60 manual FFx-BBU Battery Backup Unit Module

Plug-in Board Modules The FFx-RAID Controller Module

ÊInstall the second FFx-RAID controller module in the free slot as module 1 (see figure 4 on page 20).

ÊSwitch the storage subsystem OFF and ON again.

ÊConfigure both FFx-RAID controller modules identically.

ÊReboot the host system.

8.1.5The 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.

VCAUTION!

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.

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