Manual

Appendix A – FAQ

6. How should I react to an DISK failure while creating a RAID 5?

Ö Replace the failed DISK with another of equal or larger capacity. The array will

re-initialize from starting.

7. If I only have two or three DISKs, can I create a RAID?

Ö 2 DISKs : No. ACUTA 4/4S need at least 3 disks to configure R5+hot spare

Ö 3 DISKs :Yes, but you can only choose R5+hot spare. The three DISKs must be

installed in the bottom three disk carriers with the top layer – the hot spare location,

left empty.

8. Why does the display read “unmatched”?

Ö The RAID level selector is not set to the level of the existing array. Please choose

one of the following options :

Supposed the RAID level selector is R0, but the disk setting detected from disks is R5.

(1) Shut down ACUTA 4/4S and tune the RAID level selector 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 init )

9. If I really want to re-create a new RAID. How should I do?

Ö Remove all disks.

Ö Power off ACUTA 4/4S, set up RAID level by selector switch than power on ACUTA

4/4S.

Ö Plug in all of disks to initialize new RAID.

Ö If you use previous disks, ACUTA 4/4S will show a message “Create New RAID?” to

confirm with you if you really want to create a new RAID. Please choose “Yes” by

right button, the initialization will then begin.

Ö Please notice that the procedure will erase all data of the four disks.

10. The host computer cannot detect ACUTA 4/4S. What should I do?

Ö Make sure the host interface connection cable is attached securely to ports on

ACUTA 4/4S and the host and is not damaged.

Ö Check the display for error messages.

11. A disk has failed. What should I do?

Ö Swap the failed disk with one of the other three disks and turn on. If the same disk

fails, replace the disk. If the failure reappears at the same drive carrier, either the