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Chapter 4 – Setting up an array
Setting RAID level
RAID level is set using the RAID level selector
on the rear panel of ACUTA. The RAID level
selector consists of two switches. The four
possible
combinations
correspond to the four available RAID settings:
0, 0+1, 5 and 5+spare.
If the RAID level is not matched between the
disk setting and the RAID level selector
setting, the LCD will display the following
two messages alternatively:
(1) "RAID level"
"Unmatched"
(2) "Current: Rx"
"Original: Rx"
Note: Current Rx means the RAID level setting
of current disks
Original Rx means the RAID level setting
of RAID level selector
For example:
Supposed the RAID level selector is R0, but the disk
setting detected from disks is R5, the LCD will
display the following two messages alternatively:
(1) "RAID Level"
"Unmatched"
(2) "Current : R5"
"Original : R0"
Solution: At this situation,RAID cannot work,
users should choose one of the following
options :
(1) Shut down Acuta and tune the RAID
level selectors to R5.
or (2) Re-plug the four disks and re-create the
Array to R0 (But data in the R5 disks will be lost
due to the destructive initialization )
of
switch position
29
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