Hitachi Compute Blade 2000 User Manual page 327

 Building disk arrays
This section describes the procedure for building disk arrays.
The building of disk arrays should be entirely performed from the Configuration
Wizard.
You must not change the disk array during system operations. If you do, all
data will be lost from those disks due to change in the disk array.
!
Make sure to set each item to the recommended value
Note
unless other specific directions are given. Otherwise, the
system might not properly operate. We are not responsible
for a malfunction due to a setting except our recommended
values.
Building disk arrays for RAID 0, 1, 5, and 6
This section describes the procedure for building new disk arrays.
RAID0 configuration (single hard disk configuration) has no redundancy.
Thus, if the hard disk fails, all data will be lost.
It is recommended that you use the system with RAID1/RAID5/RAID6/
RAID10 configuration to ensure data redundancy and improve resistance to
failure.
To build RAID 10, see
For information about how to set hotspare, see
hotspares.
NOTICE
NOTICE
Building disk arrays for RAID
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10.
Setting