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Allocate free disk space to logical disk D after array expansion with HP ACU

Posted on 2006-04-10
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Last Modified: 2012-06-27
Hello

I'm running an HP ProLiant ML350 with an SA641 RAID controller with 6 hot plug SCSI disks.
The OS is Windows 2000 Server - SP4.
RAID arrays:
Array A = RAID 1 -> 2 mirrored disks for the system files (Logical disk C)
Array B = RAID 5 -> 3 disks in distributed parity for all data files (Logical disk D)
All disks are "Basic Disks".
I recently expanded the RAID 5 disk array to 4 disks, and then extended the Logical Disk D on this array through HP's ACU (Array Configuration Utility).
The operation succeeded, but when I go look in Win 2K's Disk Management, it turns out that the added space is marked as "unallocated space".

How can I add the extra free space to the Logical Disk D?
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Question by:WonderlandOffice
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rindi earned 375 total points
ID: 16416021
You could use a 3rd party partitioning utility like acronis diskdirector or bootit-ng.

http://acronis.com
http://www.terabyteunlimited.com/

You could also try using diskpart from a windows command prompt. Diskpart /? will give you the correct syntax. I don't think this works on basic disks though, but why not try?
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Expert Comment

by:mikhael
ID: 20642743
This question interests me because I need to do this very process on an M350G4p (with a Smart Array 641 running just 1 array - a RAID5 with 3 disks) soon. Except mine is Win 2003.

I read up on the DISKPART tool (at least for 2003), and from the help file...
*** You can only extend a basic volume onto the same disk.
*** You can only extend a basic volume if it is followed by contiguous unallocated space.

Does anyone know any "gotchas" with this process? (either actually adding the disks in the first place or the subsequent reconfig inside the ACU or indeed with the diakpart utility ???)

Thanks
Michael
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