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Upgrade / Backup / Restore Pro6 and 316
Hi team, So i managed to find myself a brand new 316 ReadyNAS.. I have an existing Pro6 with 6 x 3TB disks installed with XRAID-2: but I made it so that 3 are used for capacity and the other 3 a...
dejhon wrote:
I have taken out 2 of the disks already and the NAS has told me that the volume is currently unprotected..
Looks like you did that before you captured mdconfig. A bit risky, if it had been in RAID-10 you could have killed your volume.
However, the RAID mode is 6, so you didn't have triple redundancy (and that is confirmed by the NAS telling you the volume is unprotected).
The sector count on md2 looks low - is there an md3? What disks are you using?
As far as next steps, I suggest putting the two removed drives temporarily into the RN316 as jbod (using flexraid). The simplest way is to put one in first, do the factory install, switch to flexraid, then hot-insert the second. You should then be able to create a second volume. If you have any unused disks, you could try adding them in as additional jbod volumes.
Make sure snapshots are off and bitrot protection are turned off for each share, and migrate as much data as you can. Keep fullness below 90% If everything doesn't fit, you will need to store the rest on a PC or external drives.
When all is copied, reset the pro, use normal xraid, and copy back from each jbod volume (leaving the original install disk for last). Then hot-insert the two removed drives (one at a time, waiting for expansion to complete).
If you have interest in expanding the pro later on, you can look into switching it over to OS6 now. Since you are resetting anyway, it is the right time to switch (if you want to). It is unsupported by Netgear, but it would allow expansion to larger drives later on.
EskenderNG wrote:
I understand from your answer that you have a single RAID 1 volume with 6 disks. So basically your proposed setup could work. However, I would advise against doing so you.
I think it has to be more complicated than that. Adding the first disk for redundancy would have given him RAID-6. I have no idea what the system would do when he added the second disk for redundancy. The pro-6 uses mdadm for raid, and that doesn't support triple-parity. I guess it could have gone to RAID-10???
I take your point that w/o knowing the raid mode it is hard to predict what will happen when disks are removed.
dejhon - From your first post, it seems that you want to end up with 6x3TB RAID-5 on the Pro, and that you want that volume to hold all your existing data.
But you haven't said where you want to end up on the RN316. Presumably it won't end up sitting empty. Maybe tell us that, and we can figure out a safer migration path.
Ok, with OS 6 you could add several disks at once to a RAID 1 array while maintaining a RAID 1 array using Flex-RAID. I made the wrong assumption that this would work on the Pro as well.
Thanks, Eskender
EskenderNG wrote:
Ok, with OS 6 you could add several disks at once to a RAID 1 array while maintaining a RAID 1 array using Flex-RAID. I made the wrong assumption that this would work on the Pro as well.
Thanks, Eskender
I'm not sure if that would work on the pro, I believe it will work on some of the legacy NAS.
But he has a single 9 TB volume, so it can't be raid-1.
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