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4433 Discussions

Drive shows as unformatted after RAID 5 expansion

idata
Community Manager
1,127 Views

I had a RAID 5 array consisting of three 1.5 TB drives (total storage space ~3TB). It uses GPT & NTFS, and it's on a Windows 2008 Server x64 machine. I recently purchased two new 1.5TB drives and added one of them to the pool. I used Intel Matrix Storage Manager to expand the capacity of the raid array (which took a very, very long time - 300+ hours). When it completed, I was prompted to restart the PC in order to make use of the new space. I did so, and now the drive is inaccessible in Windows - it claims it's unformatted. If I go to server management and select storage, Windows properly detects the array, sees the previous partition of ~3TB as well as the unallocated space. But if I hit open or explore on that partition (or right click it for properties), it claims it's unformatted. It seems like I may have just lost 3TB of data! Help! How can I get this back / what did I do wrong (or is there a problem with the software / the drives)?

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2 Replies
idata
Community Manager
108 Views

Try EASEUS Partition Master Home Edition and use the wizard > Partition recovery wizard.

http://www.easeus.com/download.htm http://www.easeus.com/download.htm

Doing expanding to a RAID is a risk you can not hope new drives you put in work 100%.

idata
Community Manager
108 Views

EASEUS's software won't even work with it because the volume is > 4 GB.

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