3TB Raid, one 2048GB partition, will not let me create a 900GB one?

  • Thread starter Thread starter Andy
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Andy

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Hi there.

A year ago or so we built this monster server for files with a RAID-5 array
it has just about 3TB of disk in it total.

I just noticed today in Disk Management that we actually only partitioned
2048GB of it (I guess the limit for a single filesystem?) and that there is
almost a 900GB 'unallocated space' block sitting there unused.

Windows will not allow me to create an additional partition in that 900GB
space.

Any advice?

-Drew
 
RE: 3TB Raid, one 2048GB partition, will not let me create a 900GB one

RE: 3TB Raid, one 2048GB partition, will not let me create a 900GB one

Drew,

If you are using MBR for the RAID array and a 512-byte sector size, you are
capped by a 2 TB limit owing to a hard MBR limit of 2^32 blocks (2^32 blocks
× 512 bytes per block (the standard sector size) = 2 TB). See
http://www.microsoft.com/whdc/device/storage/LUN_SP1.mspx. You may also be
interested in
http://technet2.microsoft.com/windowsserver/en/library/7e567bb0-59c7-413d-914d-cdcb55c1bbda1033.mspx as well.

Hope this helps.

- James Park (pencil_ethics)
 
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