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Using a 4k block HD with NAS200

Discussion in 'Cisco/Linksys Network Storage Devices' started by mugsy, Apr 8, 2011.

  1. mugsy

    mugsy Networkin' Nut Member

    Hi all,

    I purchased a WD10EARS WD Caviar Green 1TB HD for my NAS200. It is a HD that used the newfangled 4K blocks. While it does work, its operation is less than optimal due to the way the firmware partitions the HD. First partition starts at block 63 which is not a multiple of 8 (older HD uses 512B blocks). Is there a way to manually format the HD so that it is aligned properly for the 4K blocks HD? Or if I partition and format the HD outside of the NAS200 will it be recognized? Or should I just give up on using it with the NAS200? If I manually format the HD, what is supposed to be in the configuration partition?

  2. jac_goudsmit

    jac_goudsmit Super Moderator Staff Member Member

    There's a good chance that the Linksys/Sercomm software will still recognize the partitions if they are moved to 4K borders, as long as you don't change the partitioning scheme: data / config / swap.

    Before you do this, you can always make a backup of the files in the config partition and restore them after the format. That way you don't have to worry about what needs to be there.

    By the way, I doubt that you will notice any performance increase, the NAS200 is probably too slow to let 4K alignment make a difference.

  3. mugsy

    mugsy Networkin' Nut Member

    While I did think that even with the 4k alignment issue disk performance would not be an issue, the 1TB non-journaled drive was slower than a 250G journaled drive while both were installed in the NAS200. That's why I am looking into the alignment thing. What I will do is image the drive, re-align and restore the 3 partitions back (WD's alignment tool only works with Windows partition so I cannot preserve the data during the process).

    Thanx for the help
  4. mugsy

    mugsy Networkin' Nut Member

    I was able to re-align my 1TB drive as follows:
    1. format drive on NAS200
    2. image drive
    3. delete each partition individually and replace with NTFS partition
    4. re-align drive using WD's utility
    5. restore each NAS200 partition individually without restoring the original partition table (I did try to restore the drive hoping that the image utility would recognize the 4K block device and re-align but no joy)

    Since I had the drive out for imaging and re-alignment, I used the PC to move files from a NTFS backup to the drive instead of using the NAS200 (much slower) using System Rescue CD. Ran into a small glitch as System Rescue CD set all files' owner/group to root/root. When trying to access the files on the NAS200 I was getting permission errors. Logging in to the NAS200 using SSH I quickly changed ownership to guest/everyone and all is good.
  5. jac_goudsmit

    jac_goudsmit Super Moderator Staff Member Member

    Thanks for the info, Mugsy!


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