Solved

Expanding a RAID 5 Array Without Losing Data

Posted on 2009-07-07
5
677 Views
Last Modified: 2012-05-07
I have a Dell PowerEdge server with the PERC 4e/Di RAID Controller.  I have 2 disks in a RAID-1 array for the OS, plus 4 - 73 GB drives in a RAID-5 array for data.  I've added 2 additional 73 GB drives to the RAID-5 array.  Using the Dell OpenManage Server Administrator, it reconfigured the array and after several hours of rebuilding it now reports the virtual disk as ready with a capacity of 341 GB which is correct.  However, Windows (Server 2003) still reports the original capacity of 204 GB.  Do I still need to "ititialize" the new array to make all the drive space available?  I know that doing so will wipe out my existing data.

Thanks,
Rich B.
0
Comment
Question by:RichJayBee
  • 3
5 Comments
 
LVL 76

Expert Comment

by:Alan Hardisty
ID: 24798782
What are you looking at within Windows that advises you the array is still 204Gb?
If you are using Disk Manager, then something is missing, if Windows Explorer, then that is the reason.
In Disk Manager, you should see the additional space, to which you can expand your last volumes into or create a new volume.
DO NOT INITIALISE THE ARRAY.
0
 
LVL 76

Expert Comment

by:Alan Hardisty
ID: 24798793
Please refer to this previous EE article for more info:
http://www.experts-exchange.com/Storage/Misc/Q_21800843.html 
0
 
LVL 70

Accepted Solution

by:
garycase earned 500 total points
ID: 24799078
There are two operations to do when you add disks to an array ...

(1)   Expand the size of the array (the physical "container" that holds the logical "disk").     You've already done this.

(2)   Expand the partition(s) on the logical disk to use that added space.    That's what you need to do now.     There are a variety of ways to do this, but with Server 2003 and a single logical partition on the "disk", the easiest is to simply run DiskPart from a command line.    See the details here:  http://support.microsoft.com/kb/325590

... just to summarize that article:

=>  Open a command window
=>  Type the following commands:
      ==>  diskpart.exe
      ==>  list volume
      ==>  select volume <volume number>
               ... where <volume number> is the volume you need to extend
      ==>  extend
               ...  you don't need any parameters -- it will extend the volume to use all remaining space
      ==>  exit

Done :-)
0
 

Author Comment

by:RichJayBee
ID: 24799457
Thanks again for all the help.  Windows now recognizes all the available space and I didn't need to blow away the original array, backup or restore any of my original data!
Thanks again!
Rich B.
0
 
LVL 76

Expert Comment

by:Alan Hardisty
ID: 24799479
One for my Bookmarks Gary - nice answer.
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

this article is a guided solution for most of the common server issues in server hardware tasks we are facing in our routine job works. the topics in the following article covered are, 1) dell hardware raidlevel (Perc) 2) adding HDD 3) how t…
In this article you will get to know about pros and cons of storage drives HDD, SSD and SSHD.
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 video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…

809 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