I have a 21TB array but only 16TB is visible from Windows

Posted by Relentim on Server Fault See other posts from Server Fault or by Relentim
Published on 2011-11-22T17:15:33Z Indexed on 2011/11/22 17:58 UTC
Read the original article Hit count: 190

Filed under:

windows-server-2003

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raid

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ntfs

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hardware-raid

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3ware

CONTROLLER

Raid Controller: 3Ware 9650SE-24M8
Disks: 21 x 1TB RAID5
Stripe 64KB

WINDOWS

OS: Windows Server 2003 SP2 32x
Disk: Dynamic 19557.44GB
Volume: Capacity 15832.19GB

I guess my array must have a 4KB block size which is limiting it to 16TB. I think I would have to switch to a 64KB block size to be able to see a maximum of 256TB. Or create another unit on my controller to go above 16TB of storage.

Unfortunately I have already added over 16TB, ideally I would like to shrink the array and reclaim the 5 disks that aren't doing anything. I don't think this is possible. More likely, can I change the block size so 20TB becomes visible in windows?

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