Expand Lun Feature; Auto Repair Mode; Repair Time Feature - NEC S1300 User Manual

Expand LUN Feature

The Expand LUN feature increases the number of logical disks available from the host.
When running Windows NT or Windows 2000, the expand LUN feature is disabled
(shipping default). This setting can be changed with the NEC Storage Manager
(management software).

Auto Repair Mode

When the disk array includes an unused spare disk, you can select whether the repair
operation is started automatically or manually by using the NEC Storage Manager
management software. Auto repair mode is set to enable (shipping default).

Repair Time Feature

The default repair time is 10 hours. This time can be set from 0 (fastest) to 24 hours.
However, the repair might not be completed within the predetermined time depending
on the required repair. If a repair time is not specified, the fastest possible repair is
automatically executed.
With the repair time set to the shortest value (0), the RAID redundancy is rebuilt as fast
as possible to minimize exposure to a second failure. Setting the repair time to 24 hours
minimizes loss of performance during the repair.
1-8 Disk Array Unit Overview
This Manual:http://www.manuallib.com/nec/s1300ug-disk-array-unit-user-guide.html
Note:
When the DAU is connected to a host server that does not
support the Expand LUN feature, and this feature is turned on, the
host server may not recognize the DAU. If this occurs, the default
setting (Expand LUN feature off) may not be restored with the NEC
Storage Manager management software, resulting in system fault.
Notes:
If auto repair mode is disabled during a repair, the
current repair continues and is not terminated. The new setting will
take affect for the next repair.
When auto repair mode is enabled in the standby state, the repair is
not immediately initiated. The new setting will take affect for the next
repair.
When auto-repair mode is turned on and the physical disk status is
examined from the management software, "rebuilding" status is
displayed indicating the repair is in process. When auto-repair is
turned off and a disk fails, the status "reduce" is displayed until the
rebuild process is started manually.