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Thread: problem with migrated raid configuration

  1. #1

    Default problem with migrated raid configuration

    I have the following problem.

    Initially I have created a RAID5 with 3 disks. I have no problems using this configuration. However after I migrated the RAID5 to 5 disks, the extra storage is not available.
    "setup->disk manager" is showing the correct size but "status->share volume" is showing the old size;

    Function: Share volume statistics

    Total volume size (GB): 595.9
    Used volume size (GB): 0.1
    Free volume size (GB): 595.8
    Reserved for snapshot (GB): 0

    Volume usage: 0%

    I have downloaded the logs and the file tests.log shows this;

    fdisk -l

    Disk /dev/sda doesn't contain a valid partition table

    Disk /dev/sda: 1279.9 GB, 1279954780160 bytes
    255 heads, 63 sectors/track, 155612 cylinders
    Units = cylinders of 16065 * 512 = 8225280 bytes

    I tried "repair filesystem on LV" with the extended console tools which doesn't help.
    Currently I'm in a test fase, so no production data is stored on the NAS. I think by "deleting content of units" with the extended console tools and then using "setup->disk manager" I will get the full capacity.
    However this is for me not an ideal solution because during the migration to the NAS I want to migrate the RAID5 from 5 disks to 8 disks without loosing data.

  2. #2


    The NAS 2.0 is based on the 2.4 Kernel and you do not have the capability with our utilities to do Physical Volume resizing. NAS-XSR Enterprise you have this feature.
    All the best,

    Todd Maxwell

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  3. #3


    Hmm, a case of bad product selection on my side. I assumed (is the mother of all f..) that the difference between NAS and XSR was the software raid capability of XSR.
    I have a new stategy; Create a RAID5 of 4 disks. During the migration create a second RAID5 of 4 disks.
    The only drawback of this stategy is the loss of an extra disk.

  4. #4


    Sorry for the inconvenience but there are limitations to the 2.4 Kernel on the NAS 2.0. On NAS-XSR it's not just the Software RAID features but greater expansion on Logical Volumes up to 16TB plus much more as identified on the following link.

    The Open-E NAS-XSR family is the new generation of the Open-E NAS software. Compared to the Open-E NAS, the NAS-XSR family offers up to 60% better performance, Logical Volumes up to 16 TB, improved hardware compatibility and more features, like software RAID, cross data synchronization and Anti-Virus.

    The Open-E NAS-XSR has now new Tuning Tools and support for Infiniband to increase the high data-throughput of the NAS servers based on the Open-E software.
    All the best,

    Todd Maxwell

    Follow the red "E"
    Facebook | Twitter | YouTube

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