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Forum Discussion
RND4000 v3 (ReadyNAS NV+) RAID 1
Hello. Newly purchased ReadyNAS NV+ v3, to be used as media server mostly. Flex-RAID, two volumes RAID 1, currently 4 x 1TB discs. I had backed everything up onto a 2TB disk, and bought a second 2TB disk hoping to upgrade one volume to 2 x 2TB. I thought I could hot-swap one disk at a time, and let the RAID rebuild each time, and I'd have a 2TB volume. Reading some posts here, it sounds as though I can't - all I'll get is still 1TB and lots of wasted space. Is this right? Using RAIDiator 4.1.16, RAIDar 4.3.8.
Or: can I remove the other two disks, put new ones in their place and create a 2TB RAID 1 volume, copy everything across, and then put back the removed two disks, and keep intact the other volume, or do I risk it re-formatting the disks when I replace them? I can and will back everything up to another device, but it would be helpful to know whether either of these options is possible.
Thanks very much. I have another question but it's completely different, so I'll keep that separate!
Mark
8 Replies
One way to get there is to destroy the volume, insert the two new disks, and create a new RAID-1 volume. Then restore the files from your backup.
Yes of course - thanks. I was just hoping that there would be a more "elegant" way of doing it! Do you know whether either of my ways would work? It would be useful in all sorts of ways to know whether I can take out both disks of a RAID 1 mirror and put them back later without the system trying to re-format them...
Thanks very much.
Mark
mfb9 wrote:
Yes of course - thanks. I was just hoping that there would be a more "elegant" way of doing it!
XRAID on your v1 (sparc-based) NAS will vertically expand if all the disks are upgraded. I don't believe that FlexRaid (which you are using) supports that. The manual only discusses vertical expansion in the XRAID section: http://www.downloads.netgear.com/files/GDC/RND2110/RAIDiator4-1_SW_en_06Dec11.pdf?_ga=2.256926923.1967187447.1556282816-1440440257.1554661675
However, you can try it and see.
As a general rule, your NAS will reformat a disk whenever it is hot-inserted, or whenever the NAS thinks it isn't correctly formated. You can power down NAS, manipulate disks (including replacing one with a cloned one), and then power up again, and the NAS won't reformat. Though it might still resync.
Also, the operating system (and the configuration) is mirrored across all the disks in it's own OS partition. One challenge with your other idea is that the configuration is changing during the process, and that will create problems when you try to reinsert the original volume. Also, I think it would actually be faster to destroy/recreate the volume, and restore the files from your backup.
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