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Forum Discussion

EagleEyes's avatar
EagleEyes
Aspirant
Mar 27, 2013

ReadyNAS NVX + Seagate 3x 2TB & 3TB HDD only 5.5TB

Hi, I have the ReadyNAS NVX running RAIDiator-x86 v4.2.22 with X-RAID2 enabled. Recently I replaced my smallest 500MB HDD with the recommended Seagate 3TB ST3000DM001 HDD. My other 3 HDD are the Seagate 2TB ST2000DL003 HDD. After installing the new HDD and waiting for the system to finish initialising I saw that all 4 HDD have been allocated 1858 GB each and a total storage capacity of 5.5TB.

I was expecting a little more than 5.5TB usable storage from the 9TB HDD installed.

Why wasn’t the Seagate 3TB ST3000DM001 HDD allocated 3TB rather than the 2TB?

Am I wrong to be concerned and the ReadyNAS NVX and X-RAID2 is working correctly?

1 Reply

  • mdgm-ntgr's avatar
    mdgm-ntgr
    NETGEAR Employee Retired
    X-RAID2 is a redundant volume. You would need a second 3TB disk installed to be able to use more than 2TB on a disk. Allowing for redundancy about 5.5TB is what you would expect. See the X-RAID Volume Size Calculator link in my signature.