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June 29th, 2016 10:00

Provision volume in blocks

Hi,

Is there a way to provision a volume by the number of blocks?

Thanks.

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20.4K Posts

June 29th, 2016 13:00

don't think so but you could use kilobytes. Are you migrating from another EMC storage array where 1 block = 512 bytes ?

here is a ~34g VMAX device

    Device Block Size        : 512

    Device Capacity

        {

        Cylinders            :      18414

        Tracks               :     276210

        512-byte Blocks      :   35354880

        MegaBytes            :      17263

        KiloBytes            :   17677440

so let's say you have a 34G VNX device that you want to migrate to XIO.

(35354880 block * 512) / 1024 = 17677440 kilobytes

727 Posts

June 29th, 2016 13:00

That’s correct – you cannot size XtremIO volumes by using the number of blocks. You can define it in multiples of 8KB.

108 Posts

June 29th, 2016 14:00

Thanks!  No, I'm not migrating, someone created an odd sized volume (1.31TBs) and I need to set up a replica in RP.  The block sizes don't match so I can't set up the CG.  My plan is to expand the volume to a round number, say like 1.4TBs and create the same size replica.

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