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Battery for Onboard RAID Controller (MegaRAID ROMB)
This section describes the features operations of battery for Onboard RAID Controller (MegaRAID
ROMB).
Features
Use an optional N8103-108F Additional Battery Backup for Onboard RAID Controller (MegaRAID
ROMB).
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
You can see the status of Battery by Universal RAID Utility. See "Universal RAID Utility
User's Guide" included in NEC EXPRESSBUILDER DVD about how to check the status
of Battery.
IMPORTANT:
[Write Through] while the Battery is being charged or discharged.
NOTE:
You need to change the policy to "Write Back" after installation of
battery.
Refresh Battery (Learn Cycle)
The learn cycle of battery is disabled in this controller. The RAID Controller performs discharging
and charging cycle at the first time or immediately after the battery replacement, however, refresh
operation will no longer be performed.
Universal RAID Utility indicates that Cache Mode is
The Default Write Policy is factory-set to "Write Through".
Configuring Your Server 4-93
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