Unable to Extend Volume to Add Available Unallocated Capacity in RAID 5 Array

Recently, I added two drives to the existing RAID 5 configuration on my Dell PowerEdge 2900 III that is running the PERC 6/i Integrated (embedded) controller. Originally there were three 300GB 15K RPM drives and now there are a total of 5. The O/S is Windows 2008 Server 64-bit with Hyper-V.

Using Dell OpenManage Server Administrator, I reconstructed the RAID set to include the two new disks and the OpenManage server administrator successfully recognizes the total new capacity of Virtual Disk 0 to be 1,115.50GB.

Four of the disks in the RAID set are a part of "Connector 0" and the fifth disk is a part of "Connector 1" (see attached screenshot):

Physical Disks and Backplane in RAID5
After rebooting the server, I have gone into Server Manager -> Storage -> Disk Management to add the newly available space to the existing logical drive D however the "Extend Volume" option for the D drive is grayed out.

Disk Management Screenshot
Does anyone know why this option would not be available? From all my research it should be contiguous space and available to be added to the D partition.

Any help would be most appreciated!
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PowerEdgeTechIT ConsultantCommented:
Problem is you cannot extend an Extended partition.  You'll have to first delete D: and the Extended partition, create a new Extended partition to include the new space, then restore data to D:.  You should be able to do this with partitioning software though.

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noxchoGlobal Support CoordinatorCommented:
With third party partitioning tool such as Paragon Partition Manager 11 Server (paid version runs both from Windows and Boot CD) or Parted Magic 5 (open source free version that works from boot CD only) you will be able to allocate this space to D: partition in few minutes.
www.partition-manager.com Paragon
www.partedmagic.com Parted Magic
In any of the listed tools right click on Extended partition - move/resize - catch the right border and drag it to right. Apply changes. This will allocate space to Extended partition and make it next to D: partition.
Then same right click on D: - move/resize - catch the end of partition and drag it to right. Apply changes. Done.
Sure, take backup before you start partitioning. This is mandatory.
boomtowncioAuthor Commented:
PowerEdgeTech - how do you determine if a partition has already been extended (good to know for future reference)?
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noxchoGlobal Support CoordinatorCommented:
Extended means type of partition. You can create four primary partitions on one MBR partitioned drive. Or three primary and one Extended partition (where Extended partition can have up to 128 logical drives inside). Extended partition is kind of emulating virtual hard drive. But normally Windows must be installed in primary partition as booting from Extended partition is not supported.
noxchoGlobal Support CoordinatorCommented:
The green frame round of your D: partition (which is blue colored) is Extended partition. Inside of it you can create as many partitions as you want.
boomtowncioAuthor Commented:
Aha I see. Makes total sense now.

noxcho & others - which third party partition software do you think is the best?
PowerEdgeTechIT ConsultantCommented:
Sorry for not getting to your question sooner (pesky job :)) ... noxcho explained it beautifully.  

noxcho also has some good options for partitioning tools that should work in a previous post.  I would add Acronis Disk Director - solid but expensive.
noxchoGlobal Support CoordinatorCommented:
For production server I would go with Paragon Partition Manager 11 and it is not as expensive as Acronis though has more features that ADD.
And if you prefer free tool then go with Parted Magic 5.x but it works only from boot CD and does not guarantee that you RAID controller will be detected by Linux properly.
With Partition Manager 11 it would take about 3 minutes to complete the whole job.
You need first to allocate space to Extended partition (right click on it in PM - move/rsize - select the right border and drag it to right - apply changes) then right click on logical partition - move/resize - drag the right border to right and thus allocate the space to it. Apply changes.
boomtowncioAuthor Commented:
Thanks to all that have contributed to this post. Excellent information!
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Windows Server 2008

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