Windows Server 2003 extend (mount) a partition

I have a data drive that is running out of disk space and I would like to add/mount another  partition (250GB) that is available. I want to make the change so that users are oblivious (other than the data drive increasing in size) and so that existing data and permissions are not affected.

What is the best way to do this and are there any potential pitfalls.
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Subhashish LahaCommented:
If you have free space (250 GB) on same disk and that unallocated space continuous then using Diskpart you can extend the same partition.

If its a separate 250GB Disk , then convert both disk to Dynamic and create SPAN volumes i.e. Extend the Data partition to unallocated space of new disk.
Just remember when you mount the additional space, the folder needs to be completely empty.
Joseph DalyCommented:
If the drive you want to extend is a system drive you probably wont be able to use diskpart. I would reccomend Dells extpart, this tool will allow you to extend any drive even system/boot drives.
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plokij5006Author Commented:
Thanks for your comments - very helpful.

It is not a system partition. It is on a RAID array (3 disks on RAID5) that both partitions are on so effectively it is the same disk. Does the RAID have any bearing on this?

If I use Diskpart/extpart will there be any downtime in terms of access to the data i.e. will the drive go offline?
Subhashish LahaCommented:
No, Drive will not go offline while extending partition using Diskpart/Extpart. It will not impact the RAID.
noxchoGlobal Support CoordinatorCommented:
Can you take a screen shot of your Windows Disk Management and upload it here so we could see your actual config?
plokij5006Author Commented:
Many thanks. This is a screenshot of disk management:

windows server 2003 disk management
I am looking to increase the size of the E drive partition by using the F drive partition. Is there anyway I can simply 'mount' one partition to another.
noxchoGlobal Support CoordinatorCommented:
You have 179GB free unallocated space on first HDD. Create there partition and move data from F: there. Then remove F: drive letter from current partition and assign it to newly created partition.
As the old F: drive now can be deleted - delete it.
Then in Diskpart.exe simply extend the E: partition by taking as much space as you want. Either take all space or leave some space for additional data partition.
If you try to shrink F: partition to take space for E: partition then it will take very long. The way I suggest is simple and fast.

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plokij5006Author Commented:
Many Thanks.

Does the fact that I have two raid arrays have any bearing on this?

Raid 1 OS
Raid 5 Data
noxchoGlobal Support CoordinatorCommented:
Nope. In this case Windows sees the RAID configurations as single HDDs. What type of data do you have on F: drive?
plokij5006Author Commented:
The data is just standard files (pdfs etc.).
Subhashish LahaCommented:
Follow below steps

- Create a partition on Unallocated(free) space on Disk 0.
- Copy-paste all data of F drive to new partition.
- When you're sure that you have copied all data. Delete F drive.
- Change the Drive letter of new Partition to F drive.
- Open command prompt and run Diskpart
     * run List volume
     * run Select volume <volume number> . Should be 2 or 3
     * run Extend.

It will extend the partition to complete unallocated space which created after deletion of F drive.

For more info on Diskpart, check below link
noxchoGlobal Support CoordinatorCommented:
sunhashishlaha, you posted the same steps that I did post? For what reason? ))
Subhashish LahaCommented:
@noxcho: I apologies for my mistake. I didn’t notice that you have already given the steps. I just saw the Disk management screenshot and last 2 comments.
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