+ Post New Thread
Results 1 to 9 of 9
Hardware Thread, Time to Offline Rebuild an Array? in Technical; We have a 4 disk RAID 10 array of 500GB Seagate Barracuda ES.2 on an Intel SRCS16. The controller is ...
  1. #1
    doofusdog's Avatar
    Join Date
    Feb 2010
    Location
    Dunedin
    Posts
    37
    Thank Post
    5
    Thanked 1 Time in 1 Post
    Rep Power
    0

    Cool Time to Offline Rebuild an Array?

    We have a 4 disk RAID 10 array of 500GB Seagate Barracuda ES.2 on an Intel SRCS16.

    The controller is SATA 1

    One of the drives has failed. Beeps and a very grindy noise.

    How long to rebuild after I replace the disk? I'd prefer to do an offline rebuild.. I just need to know is it an evening job or a weekend one?

    I have done it once before about 4 years ago and the my memory is a bit fuzzy.

    thanks!
    Craig

  2. #2

    SYNACK's Avatar
    Join Date
    Oct 2007
    Posts
    11,241
    Thank Post
    882
    Thanked 2,743 Times in 2,317 Posts
    Blog Entries
    11
    Rep Power
    784
    One 500GB drive is probably an overnight build depending on the speed of the array. I would say that an offline build is much safer and quicker with a lower end controller like the ones that the intel boards contain. It will almost certainly complete overnight short of another hardware issue occouring.

  3. Thanks to SYNACK from:

    doofusdog (10th May 2011)

  4. #3
    mjs_mjs's Avatar
    Join Date
    Jan 2009
    Location
    bexleyheath, london
    Posts
    1,021
    Thank Post
    37
    Thanked 111 Times in 95 Posts
    Rep Power
    37
    I rebuilt my raid 1 array on an SIS controller (less than £30 jobby) over night. I did the same array in online mode and it took ni on a day to complete.

  5. #4
    doofusdog's Avatar
    Join Date
    Feb 2010
    Location
    Dunedin
    Posts
    37
    Thank Post
    5
    Thanked 1 Time in 1 Post
    Rep Power
    0
    hmmm I'm going to give it a test run on my other identical and not so important server.. the SRCS16 card was $300-400 USD so not a cheapy.. I'll let you know

  6. #5

    SYNACK's Avatar
    Join Date
    Oct 2007
    Posts
    11,241
    Thank Post
    882
    Thanked 2,743 Times in 2,317 Posts
    Blog Entries
    11
    Rep Power
    784
    Quote Originally Posted by doofusdog View Post
    hmmm I'm going to give it a test run on my other identical and not so important server.. the SRCS16 card was $300-400 USD so not a cheapy.. I'll let you know
    Ah, fair enough, I just hear intel and RAID in the same sentence and it gives me a bit of a shiver given the experiences that I have had with intel raid stuff.

  7. #6
    doofusdog's Avatar
    Join Date
    Feb 2010
    Location
    Dunedin
    Posts
    37
    Thank Post
    5
    Thanked 1 Time in 1 Post
    Rep Power
    0
    from 1% to 2% took 10 minutes = 16.3 hours for 100%.. so it should be finished by about lunchtime tomorrow given I started at 8.25pm (ish)

    so that would be Fri 6pm til around 10am Saturday for example

    I'm doing an offline build with the rate set to 100%

    I'll wait til 3% and see if it's constant.. OK it is!!

    So it's around 70Mb/s which sounds slow!

    Craig
    Last edited by doofusdog; 10th May 2011 at 10:05 AM.

  8. #7

    SYNACK's Avatar
    Join Date
    Oct 2007
    Posts
    11,241
    Thank Post
    882
    Thanked 2,743 Times in 2,317 Posts
    Blog Entries
    11
    Rep Power
    784
    Quote Originally Posted by doofusdog View Post
    from 1% to 2% took 10 minutes = 16.3 hours for 100%.. so it should be finished by about lunchtime tomorrow given I started at 8.25pm (ish)

    so that would be Fri 6pm til around 10am Saturday for example

    I'm doing an offline build with the rate set to 100%

    I'll wait til 3% and see if it's constant.. OK it is!!

    So it's around 70Mb/s which sounds slow!

    Craig
    70MB/s is about right for a SATA drive on a SATA1 bus. It is limited by the write rate of the destination drive so that kind of speed sounds about right.

  9. #8
    doofusdog's Avatar
    Join Date
    Feb 2010
    Location
    Dunedin
    Posts
    37
    Thank Post
    5
    Thanked 1 Time in 1 Post
    Rep Power
    0
    nah 70 Mbit/s

    so slow. but I've googled around an that seems about right for a RAID rebuild on 4 year old hardware.. 91% done now.

    Craig

  10. #9

    SYNACK's Avatar
    Join Date
    Oct 2007
    Posts
    11,241
    Thank Post
    882
    Thanked 2,743 Times in 2,317 Posts
    Blog Entries
    11
    Rep Power
    784
    Quote Originally Posted by doofusdog View Post
    nah 70 Mbit/s

    so slow. but I've googled around an that seems about right for a RAID rebuild on 4 year old hardware.. 91% done now.

    Craig
    Damn thats slow, that works out to about 8.5MB/s, I can get 35MB/s off an old single sata drive in my home PC so I'm guessing that its rebuilding does a lot of extra checking even when ramped up to 100%. At least its almost done now.

SHARE:
+ Post New Thread

Similar Threads

  1. Offline files read only when opened offline
    By plexer in forum Windows 7
    Replies: 6
    Last Post: 4th November 2011, 02:21 PM
  2. Help - My Array has died
    By Simcfc73 in forum Hardware
    Replies: 7
    Last Post: 6th August 2010, 09:06 AM
  3. Split into array ?
    By mac_shinobi in forum Coding
    Replies: 5
    Last Post: 13th August 2009, 12:23 PM
  4. Moving to a RAID array
    By binky in forum Hardware
    Replies: 7
    Last Post: 28th February 2009, 03:48 PM
  5. Offline files problems after server rebuild
    By plexer in forum Windows
    Replies: 6
    Last Post: 3rd September 2006, 09:23 PM

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
  •