NEC N8103-100 User Manual page 52

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7.
After charging the BBU, make sure that the Current Write Policy (indicating write cache operation
status) is indicated as "Write Back."
"Logical" tab
"Properties" tab
The battery cell you have purchased is not charged at all. For such battery
cell, the [Current Write Policy] in [Properties] of [Logical] tab is indicated as
"Write Through" on MSM.
You can check the charged status of battery cell by selecting [Relative State
Notice
of Charge] or [Absolute State of Charge] in [Physical] tab → [Properties] on
MSM.
For details of the Write Policy, refer to the User's Guide of the disk array
controller or MSM User's Guide (online document in the CD-ROM coming with
the server).
Tips
Current Write Policy : Write Back Default Write Policy : Write Back