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Forum Discussion
Set up RN102 as JBOD that Span
When I set up two disks as JBOD with X-Raid turned off, ReadyNas will manage each hard drive as a separate logical volume. Is there a ReadyNAS option to allow Spanning that will will combine both of the hard drives in a single volume and will save the information in a linear fashion, once disk 1 is full it will continue with disk 2? This would give the benefit of Raid 0 without the striping allowing to replace a single drive without losing both drives data in the Raid 0 configuration.
Thanks
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Zonker wrote:
This would give the benefit of Raid 0 without the striping allowing to replace a single drive without losing both drives data in the Raid 0
I think you can set up spanning jbod (though I haven't tried). But I don't think that mode provides the benefit you want, because the file system structures are still scattered on both disks.
yeah, but at least I could recover 1 of the disks files. In RAID 0 all I would have is half the file on 1 disk, so I would lose everything.
If anyone knows where I can find instructions on spanning JBOD I would appreciate it.
Thanks,
Zonker wrote:
yeah, but at least I could recover 1 of the disks files.
That would not be guaranteed, particularly as the volume gets older. There is no striping, but files will end up on both disks, and metadata could end up on one drive, but the datablocks on the other one. If you want maximum recoverability, use two volumes (one for each disk), and put some shares on each. Backups are of course better than hoping that data recovery will work.
I just checked the software manual, and it says that jbod requires one disk per volume. Though you could try it I guess (sometimes the manual isn't quite right). You'd destroy your current volume (uninstall your apps first), and then create a new one.
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