NEC SigmaBlade B140a-T Betriebsanweisung Seite 136

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4-84 Configuring Your Server
Battery for On-board RAID Controller (MegaRAID ROMB)
This section describes the features operations of battery for on-board RAID controller (MegaRAID
ROMB).
Features
The on-board RAID controller (MegaRAID ROMB) has factory-installed battery.
With the following features, the possibility of data loss due to an unexpected accident (e.g., an
instantaneous power failure which may occur in Write Back mode) can be avoided.
Backup of data in cache memory of RAID controller
Improvement of reliability in Write Back mode
Adoption of reusable nickel hydrogen battery
IMPORTANT: While the battery is being charged or discharged,
"Write Through" is displayed in [Current Write Policy].
NOTE: The Default Write Policy is factory-set to "Write Back".
Refresh Battery (Learn Cycle)
The learn cycle of battery is disabled in this controller. The Onboard RAID Controller (MegaRAID
ROMB) performs discharging and charging cycle only once at the first time the server is installed.
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