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Dhakshinamoorthy

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12 years ago

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Dhakshinamoorthy

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February 23rd, 2015 13:00

DD640 RAID Type

Hi All,

We bought EMC data domain 640 with ES30 enclosure.

Please find the below output and tell me which RAID type is used in disk group 0 and disk group 1 ? and where can i find that?

DD.JPG.jpg

Regards,

Dhakshinamoorthy Balasubramanian

http://www.storageadmin.in

  • ignesingram

    1 Rookie

    59 Posts

    2196

    1

    Posted February 24th, 2015 06:00

    Hi.

    Was the internal controller configured with all 12 drives from the start?

    By default the DD uses RAID 6.

    So dg0 will be 12 disks minus 1 for spare - 2 disks for raid leaving 9 disks worth of capacity which should come to about 8.3TB.

    The same for the ES30 shelf.

    15 disks minus 1 for spare minus 2 disks for raid leaving 12 disks for capacity which comes to about 21.6TB.

    This will leave you with 30TB of usable capacity.

    I think I have this correct.

    Cheers.

  • bobt5

    49 Posts

    2196

    0

    Posted March 5th, 2015 09:00

    All Data Domain systems except the DD120 use RAID6 protection.