Windows 2012 server backup

I have set up a new HP DL380 Gen8 server with windows server 2012.
This server has a C-drive of 1,9 TB.

I've set up 3 Hyper-V VMs on this server.

When I try to do a windows backup to a external harddrive (2TB), I get the error:
"Backup of volume C: has failed. The drive cannot find the sector requested."

The server has 8 x 300GB harddrive in one RAID5 volume.
stebysheAsked:
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stebysheConnect With a Mentor Author Commented:
I've just tried the "reduce the c-drive by some MBs"-solution.....just to see if this helps.
Actually, I reduced the c-drive by 1 GB.

Backup is currently running.....waiting for the result.
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Eddie-LopezCommented:
Hi,

Make sure that your external hard drive sectors are not bigger than 512 bytes. Also do a chkdsk of your C: drive and check for bad sectors.
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stebysheAuthor Commented:
chkdsk does not indicate any bad sectors.
This 512 byte limitation.....isn't that just for 2008 ?

http://support.microsoft.com/kb/2510009
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Eddie-LopezCommented:
Yes, my bad. I thought you were using 2008. Reading too fast, I guess... :-)
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euphonium75Commented:
Assuming that the stebyshe's shrink was the solution to her system backup, how do you deal with the same problem (HP Proliant ML350, Windows 2012 Standard) when system array was made to be Raid 1 by HP Array Config utility and you can't shrink the partition? Checked for drive errors, none, defragged. 4 consistent backups can't deal with Drive C:, new server to deploy next Monday.
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trevorpeacockCommented:
Same solution fixed it for me, shrinking the volume (through disk manager, can be done live while the server is running, then re-enlarge it as far as it will let you), Its apparently a partitioning problem caused by an older version of the HP Intelligent Provisioning solution.
More info here:
http://social.technet.microsoft.com/Forums/windowsserver/en-US/5c30aac4-e140-458d-86a3-fa11c797f3e7/wbadmin-backup-fails-on-server-2012-std-reporting-drive-cannot-find-the-sector-requested
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stebysheAuthor Commented:
It worked.
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