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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.
Depending on the amount of data to be backed up, a safer approach would be to purchase 1 to 3 drives for the 316 (depending on budget) and use these to 'swing' migrate the data to. No need to have all six drives purchased for the 316; just enough drives to hold your data for the migration. You could even set these up in RAID0 to begin with, and reformat once your Pro has been reinitialised and the data copied back to it.
Note also that if you were running 3x RAID1, pulling the three redundancy disks in the Pro and inserting them in the 316 would mean there would not be a requirement to copy data is it would already be present on the redundant . You may even be able to get away with adding a 3TB to each unit, reformatting as RAID5 and then copying the data from the other unit.
Having said that, my preference would be to not mess with the disks in the existing unit until you had a copy of your data elsewhere.
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