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karl_w_w's avatar
karl_w_w
Aspirant
Aug 11, 2018
Solved

Upgrading capacity

I currently have 3 x 3TB drives (6TB capacity) using X-Raid and I'm running out of space. My plan is to add a 6TB drive to give myself 3TB more total capacity, so that in the future I can replace one of the 3TB drives with another 6TB to increase total capacity by 3TB again.

 

Am I correct about these increases and does it seem like a sensible plan? Thanks.


  • karl_w_w wrote:

     

    Am I correct about these increases 


    Yes.  The capacity rule is "sum the disks and subtract the largest".

     

    • 3x3 TB -> 9 TB - 3 TB = 6 TB volume size
    • 3x3 TB + 6 TB -> 15 TB - 6 TB = 9 TB volume size
    • 2x3 TB + 2x6 TB -> 18 TB - 6 TB = 12 TB volume size

    karl_w_w wrote:

    does it seem like a sensible plan?


    It is sensible, though as you already know you'll need to wait a while to get the full benefit of the first 6 TB drive.

     

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  • StephenB's avatar
    StephenB
    Guru - Experienced User

    karl_w_w wrote:

     

    Am I correct about these increases 


    Yes.  The capacity rule is "sum the disks and subtract the largest".

     

    • 3x3 TB -> 9 TB - 3 TB = 6 TB volume size
    • 3x3 TB + 6 TB -> 15 TB - 6 TB = 9 TB volume size
    • 2x3 TB + 2x6 TB -> 18 TB - 6 TB = 12 TB volume size

    karl_w_w wrote:

    does it seem like a sensible plan?


    It is sensible, though as you already know you'll need to wait a while to get the full benefit of the first 6 TB drive.

     

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