Hitachi Compute Blade 2000 User Manual page 409

Item
Disable BGI Setting the background
initializing
Select Size *6 Size of a disk array
*1 RAID 6 with three hard disks and RAID 1 with three or more hard disks are not supported.
*2 When you add a disk array to an existing drive group, the RAID level cannot be changed.
*3 For RAID 1, set 64KB by Default.
*4 In Write Policy, Write Back can be set only when the system equipment without a cache backup
module installed is already connected to the UPS (uninterruptible power supply). Confirm that the
checkmark is removed from Wrthru for BAD BBU at that time. Even in this case, set Write
Through when the operating system is installed, otherwise, installation may not be properly
completed. Change the setting after installing the OS referring to
disk arrays. Do not select Write Back with BBU.
*5 When the equipment has installed a cache backup module, make sure to set Write Back With
BBU for Write Policy. If not, write performance may slow down.
*6 Maximum capacity size that can be set is shown under Next LD, Possible RAID Levels at the
right of the screen. Type a new value up to the maximum capacity value for your RAID level.
Delete the exisiting value before typing a new numeric value. When specifying the maximum
capacity value, click Update Size.
*7 None is shown for Battery Backup in
*8 Present is shown for Battery Backup in
When a drive group contains multiple disk arrays, specify
!
the same setting values on all disk arrays in the drive
Note
group.
When you configure a disk array to install an OS

and enter a value larger than 2 TB, the OS will
only recognize up to 2 TB.
If you specify a larger disk array size than the

maximum capacity, Unacceptable size appears
on the screen and all the setting items are
initialized. You need to set all items again
including the correct size.
Content
No (background initializing valid)
[Yes (background initializing invalid)]
Enter a value up to the maximum capacity value. The
lowest available value is 64 KB.
Properties: Controller properties submenu
Properties: Controller properties submenu
358
Setting value **
/
Changing the write policy for
2.
2.