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larjona's avatar
larjona
Level 3
10 years ago

Disk Pool and maximum size recommendation

Hi   I'm configuring a NBU 7.6 master / media server on Windows 2012 R2 physical server. I want to configure Advanced disk pool with some disk volumes. I need to know the best practice refer...
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  • sdo's avatar
    sdo
    10 years ago

    I wouldn't worry only about the volume counts and volume sizes.

    What you should also be worrying about is the disk IO payload size (NetBackup 'block/buffer' size) versus the underlying LUN make-up (and thus the total outstanding SCSI I/O queue depth) of the sub-components of the 'volume(s)', and any underlying parity-groups (RAID groups) configuration - and any 'multi-path' DSM configuration (e.g. round robin or least recently used, etc) - let alone the balancing of storage array front-end 'target' ports, and/or write-cache, and/or storage array back-end bus structure, and/or finally the spindle count.

    And the relevancy of any of the above all depends upon how advanced the storage device is - and how much abstraction it offers you.

sdo's avatar
sdo
Moderator
10 years ago

I wouldn't worry only about the volume counts and volume sizes.

What you should also be worrying about is the disk IO payload size (NetBackup 'block/buffer' size) versus the underlying LUN make-up (and thus the total outstanding SCSI I/O queue depth) of the sub-components of the 'volume(s)', and any underlying parity-groups (RAID groups) configuration - and any 'multi-path' DSM configuration (e.g. round robin or least recently used, etc) - let alone the balancing of storage array front-end 'target' ports, and/or write-cache, and/or storage array back-end bus structure, and/or finally the spindle count.

And the relevancy of any of the above all depends upon how advanced the storage device is - and how much abstraction it offers you.