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MightyJainesh

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MightyJainesh

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July 6th, 2022 18:00

PS6500 Storage Pools

Hi,

I have a PS6500 with the following:

24 x 300GB 10K
24 x 2TB 7.2K

I am looking to see if I can save some footprint. So Is it possible to have RAID 6, and have 2 different pools per drive types.

Pool 1 = Raid 6, 24 x 300GB 10K
Pool 2 = Raid 6, 24 x 2TB 7.2K

I really don't want to have 2 x PS6500 just to have two pools of storage.

  • DELL-Erman O

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    Posted July 6th, 2022 23:00

    Hello MightyJainesh,

    I found an administrator guide please check page 31 for multiple pool design
    "Dell EqualLogic Group Manager Administrator's Guide PS Series" https://dell.to/3P8jbob

     

    In addition, I would like to share the links below that I think may be useful.
    "PS Series technical white papers" https://dell.to/3nHVM1i

     

    And adding setup guide "Dell EqualLogic PS6000 Storage Arrays - Installation and Setup Guide" https://dell.to/3P9EvtD

     

    Hope that helps!

    DELL-Erman O

    Social Media and Communities Professional

    Dell Technologies | Enterprise Support Services

    #IWork4Dell

    Did I answer your query? Please click on ‘Mark as Accepted Answer’. ‘Thumbs up’ the posts you like!

  • MightyJainesh

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    Posted July 8th, 2022 08:00

    Thanks for the reply. I don't see any way with only a single member to be able to create pools based on disk types or sizes. 

     

    Am I missing something? I would really like to avoid getting another member, just to separate the disks types/sizes.

  • 522

    0

    Posted July 8th, 2022 10:00

    Hello MightyJainesh,

     

    You will need at least two members.

    Members per pool :  2

    Page 13 : https://dell.to/3uyyrTB

     

  • MightyJainesh

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    Posted July 8th, 2022 11:00

    Thanks. Is there no way to use single member and have different disk sizes? 

  • 518

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    Posted July 8th, 2022 12:00

    MightyJainesh

     

    If you mix capacity, in the array, it would limit the usable capacity of all drives to the smallest drive in the array.

    You cannot mix SAS and SATA.

    This may help:

    Dell PS Series Configuration Guide Page 15 : https://dell.to/3ADxwFq

  • dwilliam62

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    Posted July 8th, 2022 15:00

    Hello,  

     Just to confirm what's been said, pools are per member, no way to split a member into pools.  The RAID policy is per member.  No way to manually create multiple RAIDsets with select drives. Mixing of RPM speeds in the same member isn't supported either. 

    If you have two 6500's and can fill them with 10K and the other with 7.2K the capacity and performance increase would be substantial.   If you mix them in the same pool, then most of the volume space will be on the much larger 7.2K drives.  Members in the same pool stripe data across them in perportion to their relative sizes. IOs will have to wait for the slower 7.2K drives. If you need the lowest positible latency then isolate those volumes to the 10K member.  I.e. for VDI, SQL, etc..  Then put the less intense IO volumes on the 7.2K member. 

     Regards, 

    Don

  • MightyJainesh

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    Posted July 13th, 2022 10:00

    Understood. 

    Equallogic will only create RAID based on ALL disks within that physical SAN (member). 

    Each physical SAN (member) must contain the same type of drive (SAS or SATA) and can't be mixed.

     

    Thanks for information. 

  • dwilliam62

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    Posted July 13th, 2022 11:00

    You are welcome.  

     Regards,

    Don

  • MightyJainesh

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    Posted July 13th, 2022 11:00

    Thanks. can close this post.