Solved

Cannot create partition on 4TB span

Posted on 2010-09-03
4
1,096 Views
Last Modified: 2012-06-27
I have a Dell PowerEdge 2950 that just had all six of the drive bays filled with 2TB drives. The Array configuration utility was run during the initial server installation using the Dell systems Management disk version 6.3.

The 6 drives were setup as a single RAID10 array. Once in Windows, the OS sees the array as two Disk0 one being 2TB and one being 4TB (actually a little less in both because of overhead). The OS was installed to a 100GB partition on the 2TB Disk0 and the rest configured as a single large partition. However, in Disk Management the 4TB Disk0 shows up, but no new partition can be created. All options are grayed out. OS is Windows Server 2008 x64 Standard. Dell OpenManage shows everything fine, but Windows seems to have a problem doing anything with the drive. I can't even select the option to convert to GPT disk.

How do I create a partition of partitions in this space? I'd hate to have wasted 8TB or raw drive capacity.
0
Comment
Question by:jhalscott
  • 2
  • 2
4 Comments
 
LVL 5

Expert Comment

by:TechnicallyMaybe
ID: 33600008
It sounds like the disk hasn't been initialized yet? If the initialize disk wizard comes up, you can initialize it as GPT.
0
 

Author Comment

by:jhalscott
ID: 33600048
No, the disk is there and initialized. It shows as two Disk0. The smaller 2TB part has the OS on it and another partition now. Everything I am seeing points to the fact that it has to be GPT, but you can't do that before OS install and you cant do that after OS install. Is there some way to force it to convert?

I wanted to get the speed of the six disks in RAID10, but is this not possible? Do I have to reconfigure the RAID as two virtual disks, one with 2TB and the OS and one with 4TB that can then be converted to GPT? This is a terrible idea.
0
 
LVL 5

Accepted Solution

by:
TechnicallyMaybe earned 500 total points
ID: 33600169
You can't install Windows on a GPT disk unless you are on the Itanium architecture so yes, you need to split your drives into an OS array and a data array. Install the OS to the 2TB disk and then initialize the 4tb disk as GPT.
Maybe you should get a couple of smaller disks for the OS so you can have all 6TB for data.  
0
 

Author Comment

by:jhalscott
ID: 33600205
The PowerEdge 2950 only has 6 drive bays, so it looks like having to create a 2 disk RAID1 and a 4 disk RAID10. OS to the RAID1 2TB drive and then converting the 4 disk RAID10 (or RAID5) with no partitions on it. I would think we would have gotten past this by 2010, but such is the way of things some times. Thanks.
0

Featured Post

6 Surprising Benefits of Threat Intelligence

All sorts of threat intelligence is available on the web. Intelligence you can learn from, and use to anticipate and prepare for future attacks.

Join & Write a Comment

Ever notice how you can't use a new drive in Windows without having Windows assigning a Disk Signature?  Ever have a signature collision problem (especially with Virtual Machines?)  This article is intended to help you understand what's going on and…
Possible fixes for Windows 7 and Windows Server 2008 updating problem. Solutions mentioned are from Microsoft themselves. I started a case with them from our Microsoft Silver Partner option to open a case and get direct support from Microsoft. If s…
This video Micro Tutorial explains how to clone a hard drive using a commercial software product for Windows systems called Casper from Future Systems Solutions (FSS). Cloning makes an exact, complete copy of one hard disk drive (HDD) onto another d…
This tutorial will walk an individual through the steps necessary to join and promote the first Windows Server 2012 domain controller into an Active Directory environment running on Windows Server 2008. Determine the location of the FSMO roles by lo…

747 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

12 Experts available now in Live!

Get 1:1 Help Now