+ Post New Thread
Results 1 to 11 of 11
Windows Thread, How do I add a new disk to an existing RAID 5 array?? in Technical; Hi, We have a Dell Poweredge 2600 Server with 3x 73Gb SCSI drives in a RAID 5 array. We now ...
  1. #1
    kkkk1's Avatar
    Join Date
    Sep 2007
    Posts
    12
    Thank Post
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    How do I add a new disk to an existing RAID 5 array??

    Hi,
    We have a Dell Poweredge 2600 Server with 3x 73Gb SCSI drives in a RAID 5 array. We now need more space and so need to add another disk. The question is:-

    Can I just put a new 73Gb SCSI drive in as a spare and allocate more space to the exisitng array or do I need to break the array and re-create it with a 4th disk?

    Many thanks.

  2. #2

    Geoff's Avatar
    Join Date
    Jun 2005
    Location
    Fylde, Lancs, UK.
    Posts
    11,803
    Thank Post
    110
    Thanked 583 Times in 504 Posts
    Blog Entries
    1
    Rep Power
    224

    Re: How do I add a new disk to an existing RAID 5 array??

    1. Backup your server.
    2. Recreate the RAID array including the new disk
    3. Restore your server.

  3. #3
    kkkk1's Avatar
    Join Date
    Sep 2007
    Posts
    12
    Thank Post
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    Re: How do I add a new disk to an existing RAID 5 array??

    Many thanks.

  4. #4
    ajbritton's Avatar
    Join Date
    Jul 2005
    Location
    Wandsworth
    Posts
    1,632
    Thank Post
    23
    Thanked 75 Times in 45 Posts
    Rep Power
    34

    Re: How do I add a new disk to an existing RAID 5 array??

    Some RAID controllers do allow you to add storage 'on the fly', but I'm not sure if the PERC 4 in the PowerEdge 2600 can do this.

  5. #5

    Geoff's Avatar
    Join Date
    Jun 2005
    Location
    Fylde, Lancs, UK.
    Posts
    11,803
    Thank Post
    110
    Thanked 583 Times in 504 Posts
    Blog Entries
    1
    Rep Power
    224

    Re: How do I add a new disk to an existing RAID 5 array??

    You also have the added problem of resizing the filesystem.

  6. #6

    Join Date
    Feb 2007
    Location
    East Sussex
    Posts
    467
    Thank Post
    16
    Thanked 86 Times in 78 Posts
    Rep Power
    30

    Re: How do I add a new disk to an existing RAID 5 array??


  7. #7
    kkkk1's Avatar
    Join Date
    Sep 2007
    Posts
    12
    Thank Post
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    Re: How do I add a new disk to an existing RAID 5 array??

    Many thanks for all your responses. I'm on the case again.

  8. #8
    ajbritton's Avatar
    Join Date
    Jul 2005
    Location
    Wandsworth
    Posts
    1,632
    Thank Post
    23
    Thanked 75 Times in 45 Posts
    Rep Power
    34

    Re: How do I add a new disk to an existing RAID 5 array??

    So basically, the sequence is

    1 - Add the extra drive
    2 - Expand the virtual hard disk to use the drive (wait for rebuild)
    3 - Reboot to Safe mode and expand the last partition

  9. #9
    zag
    zag is offline
    zag's Avatar
    Join Date
    Mar 2007
    Posts
    3,765
    Thank Post
    898
    Thanked 416 Times in 350 Posts
    Blog Entries
    12
    Rep Power
    87

    Re: How do I add a new disk to an existing RAID 5 array??

    Some of the newer 3Ware cards have the expand feature, but personally I would not trust it Backup everything, wipe it, then re-create the new array.

  10. #10
    ajbritton's Avatar
    Join Date
    Jul 2005
    Location
    Wandsworth
    Posts
    1,632
    Thank Post
    23
    Thanked 75 Times in 45 Posts
    Rep Power
    34

    Re: How do I add a new disk to an existing RAID 5 array??

    If you are in doubt about the ability of the Dell PERC controller to succesfully expand the array, why not have a look at the Dell forums and/or post a question there?

    I think you have to balance the risk against the amount of work it might entail. If the server is just a file server and the expand fails, then a restore is not that much of a problem. If the server is the sole DC, DHCP, DNS and everything else, then you obviously want to take as many precautions as possible. If it's the sole DNS, then I would consider making a virtual DC on another machine, as a restore if the AD is kept online.

  11. #11
    kkkk1's Avatar
    Join Date
    Sep 2007
    Posts
    12
    Thank Post
    0
    Thanked 0 Times in 0 Posts
    Rep Power
    0

    Re: How do I add a new disk to an existing RAID 5 array??

    Thanks very much for all your help people.

    Kind regards.

SHARE:
+ Post New Thread

Similar Threads

  1. Anyone Moved a Raid array.
    By K.C.Leblanc in forum Hardware
    Replies: 10
    Last Post: 15th November 2007, 05:52 PM
  2. RM Disk to Disk to Tape Backup Solution
    By Chris in forum General Chat
    Replies: 0
    Last Post: 2nd July 2007, 10:14 AM
  3. 12 bay esata storage array
    By fooby in forum Hardware
    Replies: 8
    Last Post: 22nd June 2007, 08:35 PM
  4. Disk to Disk to Tape backup. How do you do it?
    By trekmad in forum How do you do....it?
    Replies: 0
    Last Post: 30th May 2007, 07:49 PM
  5. Recover data from broken RAID 0 array
    By indie in forum Hardware
    Replies: 23
    Last Post: 8th February 2006, 10:42 AM

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •