Rebuilding RAID 5 Array

April 21, 2009 at 20:00:10
Specs: Windows XP Pro, Intel Dual Core
Had 1 of 4 drives in a RAID 5 array (striping with parity) fail. Originally, all 4 drives were same model and capacity. Had to replace the failed one with another brand drive of same type (SATA) and capacity. Original drives were WD, replacement one is Seagate. Using the installed Windows version of Intel Matrix Storage Manager to rebuild data to the replaced drive. System Tray shows blinking drives icon, and message balloon says that drive rebuilding is occurring: no error messages. The process has taken well over 24 hours so far. Is this normal, or does it appear that something is hung? The original amount of data on the array was about 1.7 TB (yes, TeraBytes). Is there a log that can be checked? If I stop the process and restart it (if necessary to read the log) does it continue from where it left off, or start all over again? Unfortunately, Storage Manager gives no progress bar.

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April 29, 2009 at 20:43:23
I got no replies, but now the drive rebuilding process has completed. For anyone who is curious, that 1.7 TB of data (and perhaps because I couldn't get a perfectly matched drive for the RAID set) caused the rebuild to take three and a half days! Don't know if that's typical, but everything seems to be working perfectly now. And, for future reference, there is an item in one of the Intel Storage Manager menus that allows you to see, as the process is going on, the amount of the rebuild completed, as a percentage.

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