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FG's avatar
FG
Aspirant
Jul 13, 2016
Solved

Expanding Disk Space on raid 10

firmware 6.5.0 readynas 2120   I’m use 4---2TB drives with raid 10, total storage 4TB. I want to add more storage. I’ll either switch to raid 5 or get larger drives and stay with raid 10. I only h...
Business Discussions
  • Retired_Member's avatar
    Retired_Member
    Jul 18, 2016
    RAID6 on 4 HDDs with ARM CPU is going to be slower than RAID5. Imo, the difference of performance between RAID5 and RAID10 is not going to make any significant difference in your case. Unless you'll never use the capacity it would give you with the HDDs you have, I would pick RAID5.
FG's avatar
FG
Aspirant
Jul 18, 2016

Well a vertically expansion would be the easiest, but I thought it can't be done with raid 10.

StephenB's avatar
StephenB
Guru - Experienced User
Jul 18, 2016


Well a vertically expansion would be the easiest, but I thought it can't be done with raid 10.

Retired_Member is saying it does work when he replaces all disks, but AFAIK the GUI doesn't tell you the disk pairs.

  • FG's avatar
    FG
    Aspirant
    Jul 18, 2016

     If you just pull out/replace one disk at a time, let it sync then repeat, would it matter which disk are pairs?

    • StephenB's avatar
      StephenB
      Guru - Experienced User
      Jul 18, 2016
      FG wrote:

       If you just pull out/replace one disk at a time, let it sync then repeat, would it matter which disk are pairs?

      If you are wanting to expand by upgrading only two disks, then it certainly matters.  Without that knowledge you have a 1/3 chance of success.

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