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Best Practice on creating Basic LUN

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  • 1.  Best Practice on creating Basic LUN

    Posted 09-07-2022 04:36

    Hello,

    When we want to create a Pool, we have to create Basic LUN first, and then group those Basic LUN to become Pool.

    Now, is there any best practice on the Basic LUN configuration?

    For example, with 3,8 TB SSD RAID 6 (6D+2P) usable 20,6 TB. 

    I want to create a pool from that RAID Group, so first i need to create a few Basic LUN, and from those Basic LUNs i create a Pool.

    But, how many Basic LUN should i create, and how big the size of the Basic LUN  is?

    Please give suggestions
    Thanks



    ------------------------------
    Kurniawan Septian
    Sales Engineer
    PT Berca Hardayaperkasa
    ------------------------------



  • 2.  RE: Best Practice on creating Basic LUN

    Posted 09-08-2022 12:10
    Hello Kurniawan,

    I assume you are trying to create a single Dynamic Provisioing (DP) Pool from 3.8 TB SSD RAID 6 (6D+2P) usable 20.6 TB.

    First you need to create a Parity Group from from 3.8 TB SSD RAID 6 (6D+2P) drives.

    Once you create a PG, then you can create as many as Basic LDEVs.



    After that, please go ahead with creating the DP Pool by selecting those previously created basic LDEVs as per below screenshots.



    I think it will clear your confusion. Please let me know if you have any other queries.

    Thanks,
    Tanmoy


    ------------------------------
    Tanmoy Panja
    Hardware Test Engineer - Senior
    Hitachi Vantara
    ------------------------------



  • 3.  RE: Best Practice on creating Basic LUN

    Posted 09-08-2022 23:04

    Thanks for the very clear explanation.

    And for that Basic LDEV, is there any rule on how many should we create and how big it is?



    ------------------------------
    Kurniawan Septian
    Sales Engineer
    PT Berca Hardayaperkasa
    ------------------------------



  • 4.  RE: Best Practice on creating Basic LUN

    Posted 09-12-2022 07:09
    Hello Kurniawan ,

    There is no such rule for how many and how big size of basic LDEVs you need to create.

    It is upto you.

    Thanks,
    Tanmoy


    ------------------------------
    Tanmoy Panja
    Hardware Test Engineer - Senior
    Hitachi Vantara
    ------------------------------



  • 5.  RE: Best Practice on creating Basic LUN

    Posted 09-28-2022 00:25
    hi tanmoy ,ithink he means is about how creat big size has a purpose for no capacity left or maximum size  so he need the formula for count size. Kurniawan you can try my way, total capacity parity divided by multiple of 2 must not exceed 3TB,For SSD disk multiples of 4
     
     


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    Irsyad Yunanto
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  • 6.  RE: Best Practice on creating Basic LUN

    Posted 11-01-2022 05:02
    To add to Tanmoy's valuable suggestion, ne may also use CCI and do the same steps using CLI.

    ------------------------------
    Sayan Basu
    Software Quality Engineering - Specialist
    Hitachi Vantara
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  • 7.  RE: Best Practice on creating Basic LUN

    Posted 11-01-2022 07:17
    Thanks For the Valuable information.

    ------------------------------
    Souvik Bose
    Hardware Test Engineer - Advanced
    Hitachi Vantara
    ------------------------------



  • 8.  RE: Best Practice on creating Basic LUN

    Posted 11-01-2022 13:16
    Agree with Souvik - this is great info!  Is there a way to "download" the info in community or just "grab" and "paste" the info to a file?

    ------------------------------
    Tammy Waldschmidt
    Software Integration Engineer
    Hitachi Vantara
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  • 9.  RE: Best Practice on creating Basic LUN

    Posted 11-02-2022 06:50
    Tanmoy- Thanks for the information .

    ------------------------------
    Vikash Taank
    Consultant
    Hitachi Vantara
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  • 10.  RE: Best Practice on creating Basic LUN

    Posted 11-03-2022 12:09
    Minimum size for one Virtual LUN volume :48,000 KB
    Maximum size for one Virtual LUN volume : Internal volume: 2.99 TB |  External volume: 4 TB

    ------------------------------
    Shubhadip Pal
    Hardware Test Engineer - Advanced
    Hitachi Vantara
    ------------------------------