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5 replies Latest Post - ‏2012-10-08T06:56:07Z by Venthought
Venthought
Venthought
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Pinned topic Remove disks from existing array

‏2012-10-07T04:12:37Z |
Hi, need your expert advise here.

I added new 4 x 600GB SAS 15k in an existing Array with RAID 5 config. But it only reflects 1.2TB free. The other 50% is missing. How could this be?

As I analyzed, the existing Array 1 is made up of 6 x 300GB SAS 15k. Was it because the existing array used 300GB and it only identified 300GB when a disk is joined in the array?

Since it is not acceptable, I plan to create another Array 2 and assigned these disks to the new Array. But the problem now, how can I pull this disk from the Array? is is assigned?

Need advise, quite urgent as the existing drive is almost full. Details of the storage is attached for further reference.
Updated on 2012-10-08T06:56:07Z at 2012-10-08T06:56:07Z by Venthought
  • Venthought
    Venthought
    10 Posts
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    Re: Remove disks from existing array

    ‏2012-10-07T04:16:32Z  in response to Venthought
    Added information.

    The disk that I will unassigned are just newly added to the array. Need help on how to unassigned the disk from the array.
    • Novikov_Alexander
      Novikov_Alexander
      1404 Posts
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      Re: Remove disks from existing array

      ‏2012-10-07T15:44:32Z  in response to Venthought
      Dear Iven,

      the single way is backup data, delete array, create 2 new arrays (1st with 300GB HDDs, 2nd with 600GB HDDs), then restore data.

      Pay attention you need replace HDD TRAY/SLOT 85/4 which status is Impending failure.

      Optionally update all software:

      DS3000 Recommended Firmware Levels
      http://www-304.ibm.com/support/docview.wss?uid=ssg1S1003713

      Good luck,
      Alexander Novikov
      Russia, Moscow
      • Venthought
        Venthought
        10 Posts
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        Re: Remove disks from existing array

        ‏2012-10-08T00:11:28Z  in response to Novikov_Alexander
        Thank you Novikov. That's what I'm thinking too. There are database inside the logical drives, so it would be too much work if we recreate the array. Maybe we will just add new storage to have the half of the missing capacity.
      • Venthought
        Venthought
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        Re: Remove disks from existing array

        ‏2012-10-08T06:43:51Z  in response to Novikov_Alexander
        Thanks Novikov. What we will just do, is we will just replace the 600gb to just exactly 300gb.

        Now I need to know how to manually fail the hard drive in order for me to replace the disk?
        If you have a link on how to do that, it would really help. Thanks...
      • Venthought
        Venthought
        10 Posts
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        Re: Remove disks from existing array

        ‏2012-10-08T06:56:07Z  in response to Novikov_Alexander
        Thanks Novikov. I created a new thread regarding my action plan to just replace the disks but I need to manually fail the disk in order to replace it. Link - https://www.ibm.com/developerworks/forums/thread.jspa?threadID=457830