Raid Recovery Tips

There are several items to consider when replacing a drive from a failed RAID. If you are building a new RAID, then all drives in the array should be the identical model if at all possible.

However, if you must replace a failed drive, it can sometimes be difficult to find the same model if that model is out of production. Below are some tips to follow when selecting a replacement.

Keep in mind that the controller may or may not allow different models in a RAID, so check the RAID controller documentation.

• Product life: What is the expected life of the remaining drives? If the other…

Why does my WD My Book Premium II drive crash when I try to rebuild the RAID array?

Problem:
The Mac WD Drive Manager crashes when trying to rebuild the RAID array on the My Book Premium II external hard drive.

Cause:
Appears to be an issue with Mac 10.5 and 1394 Firewire. There are no known issues with Mac 10.4.x or USB.

Solution:
Connect the drive to the USB port, and re-run the WD Drive Manager to reconfigure the RAID to the desired array.