Hitachi Compute Blade 2000 User Manual page 419

Item
Drive Cache Setting the hard disk
cache
Disable BGI Setting the background
initializing
Select Size *2 *3 Size of a disk array
*1 In Write Policy, Always 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). 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
write policy for disk arrays. Do not use Write Back with BBU.
*2 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.
*3 The maximum Select Size to be set is shown under Next LD, Possible RAID Levels on the right
pane. Type a value up to the maximum size for the RAID level that you set. Delete a value from
the text box before typing another value. When specifying the maximum size, click Update Size.
*4 None is shown for Battery Backup in
*5 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 put a value larger than 2 TB, the OS can
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
[Disable (setting invalid)]
No change (depending on the hard disk setting)
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
368
Setting value **
/ Enable (setting valid)
/
Changing the
2.
2.
/