NEC NF2900-SR40E, Руководство пользователя

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Appendix A
Features of the Disk Array Unit
1. Battery Backup
The disk array unit retainsdata cached in memory with a battery while the power is OFF.
Accordingly, in anticipation of a power OFF state of longer than the battery hold period, it is necessary
to write data remaining in the cache memory by pressing the SHUTDOWN switch before powering
off the system. If the system is powered off without pressing the SHUTDOWN switch and the battery
hold period is exceeded, the following operation will be done. In this case, the cache data is lost. The
data must be recovered from backup data
1) At the first start, the SERVICE LED repeats a 5-sec flashing/7-sec OFF sequence. The disk
array unit is not started normally.
2) The controller shows the following FAULT code:
02438413
3) The disk array unit is started normally by turning the array controller off once and then on
again.
2. Repair Time
The repair time is set to 12 hours by default. The repair time can be set in the range from 0 (fastest) to
24 hours. Depending on the disk capacity, the repairs may not terminate within the defined time.
See "Individual Settings (Bind/Unbind of Logical Disk)" in "NEC Storage Series Configuration
Guide" for the use of the management software NEC Storage Manager.
3. Logical Disk Capacity
3.1 Arbitrary Logical Disk Capacity
An arbitrary logical disk capacity can be bound by using the NEC Storage Manager software.
To bind logical disks, enter the capacity in GBs (M=1024^3).
See "Individual Settings (Bind/Unbind of Logical Disks)" in "NEC Storage Series Configuration
Guide" for the use of the NEC Storage Manager software.
3.2 Maximum Logical Disk Capacity
The maximum capacity per logical disk (including the system capacity of 2 MB) can be set by using
the NEC Storage Manager..
See "Individual Settings (Bind/Unbind of Logical Disk)" in "NEC Storage Series Configuration
Guide" for the use of the NEC Storage Manager software.