Troubleshooting - Raid; Critical Arrays - HighPoint RocketRAID 4520 User Manual

Troubleshooting – RAID
If you face any RAID related issues involving your RAID array, refer to the following
sections for troubleshooting tips. For all other problems, submit a support ticket at
www.highpoint-tech.com/websupport.

Critical Arrays

When your disk is critical, that means your array as a whole is still accessible, but a
disk or two is faulty (depending on your RAID level) is in danger of failing.
Common scenarios for critical
array status
To recover from this situation,
1. Backup your existing data.
2. Identify which disk is faulty.
 You can refer to the LED lights on the enclosure.
 Refer to the WebGUI Logical tab and Event tab.
3. Re-insert the faulty disk or replace with a new disk.
 Array will rebuild automatically if you enable auto-rebuild setting and you
simply reseated the faulty disk. Note: Click Rescan if array still does not rebuild
automatically.
4. Once a new disk is added, add the new disk into the critical array.
 Log in to WebGUI.

Click Logical Tab.

Click Maintenance>Add disk> select the appropriate disk.
5. Rebuild should start automatically.

If rebuild does not start, click 'Rescan' on the left hand panel.
Note: Rebuilding an array takes on average 2 hours per 1 Terabyte of disk capacity.
The process will scan through the entire disk, even if you have very little used disk
space.
Rebuild failed

Unplugging disk that is part of an array
 Bad sector detected on a disk part of the
array

Unrecoverable data during rebuilding

Defective port or cable interrupts
rebuilding process
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