Hitachi Compute Blade 2000 User Manual page 253

Click Next. The following screen appears:
9
10 Specify the RAID level, stripe size, read policy, write policy, and disk array size.
Set each item to the correct value in the following table.
Item
RAID Level *1 RAID Level
Stripe Size *2 Stripe size
(only RAID 0 and 5)
Access Policy *3 Access policy
Read Policy Read policy
Write Policy *4 *5 Write policy
IO Policy *3 Read-cache operation
Drive Cache *3 Setting the hard disk
cache
Disable BGI *3 *6 Setting the background
initializing
Select Size *7 *8 Size of a disk array
Content
Specify any level.
2 KB / 4 KB / 8 KB
[RW (reading and writing)] /
Read Only (reading only)
Blocked (access denied)
[Normal (no advance reading)] /
Ahead (always advance reading)
Adaptive (advance reading only in the event of
sequential access)
[Write Through (write cache invalid)] /
Always Write Back (write-cache valid) /
Write Back with BBU (Write cache is valid only when
the battery is installed.)
[Direct (reading from the cache at a cache hit)] /
Cached (always reading from the cache)
[Disable (setting invalid)] /
No change (depending on the hard disk setting)
No (background initializing valid)
[Yes (background initializing invalid)]
Enter the maximum capacity value.
202
Setting value
/ 16 KB / 32 KB / [64KB] /
/
/
Enable (setting valid)
/
128 KB
/