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

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...e/LUN_SP1.mspx. You may also be
interested in
http://technet2.microsoft.com/window...1bbda1033.mspx as well.

Hope this helps.

- James Park (pencil_ethics)