pro 4 - incorrect total volume reported and lun setup

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wjajjh5 wrote:

we have a backup pro 4 using os 6.10.8 which is populated with 2 x 10 tb (9.1) and 2 x 16 tb (14.6) disks running x-raid (raid 5). no snapshot space is allocated to or used by any of the thick luns set up on the system, so as i understand it, the total volume size should equate to approximately 32.8 tb of usable space. however, our total volume reports 27.27 tb: 17.79 tb used by data, zero for snapshots and 9.48 tb of free space. i am unaware of how the box was originally set up (i.e. disk order and expansion process) but any ideas why this is please?

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27.27 TiB is 30 TB, so this sounds like either XRAID expansion failed (or that the unit is actually set up for RAID-5/FlexRAID).  (4x10TB RAID-5 would give 30 TB).  You could look into the history more by downloading the full log zip file.  Status.log might go back far enough. 

Looking at lsblk.log and mdstat.log would also give you clues on why the volume is the size it is (and the partition and RAID group structure would give some information on the expansion history).

You might be able to manually expand the volume with ssh (and a factory default should also give you the full size)

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wjajjh5 wrote:

 

on the topic of luns,

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FWIW, I don't use them - hopefully someone who does will chime in.