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Forum Discussion
changing raid type
i have an old readynas rnd4000 nvx. i have just replaced it with a new nas and want to re-purpose the old one as a straightup backup - using raid 0. it is a funny configuration: 2 discs of 50...
unita wrote:
is there a way to move all the data onto one disc, then re-format the other two as raid 0?
or is there any way to change the raid type without losing the data?
No, you'll have to lose data. Or add another 2 TB disk to the array, which will bring you to 3TB (~2.7 TiB) volume size.
hi Stephen, thanks for the speedy reply. could you please explain the significance of 3tb volume capacity in this context?
cheers,
s
unita wrote:
hi Stephen, thanks for the speedy reply. could you please explain the significance of 3tb volume capacity in this context?
cheers,
s
You are wasting 1.5 TB of the 2 TB drive now, adding a second 2 TB drive would avoid that. It also eliminates the need for a factory reset (which would be needed if you change RAID modes).
If your goal is to free up the 2 TB drive, you could switch to RAID-0 using the two 500 GB drives, by doing a factory reset and then setting the NAS to flexraid. There is a ~5-10 minute window after you start the reset to do that. You need to make that switch using RAIDar 4.3.8 (not the newer RAIDar 6).
Note that if you create a single flexraid volume (RAID-0 spanning both drives), then your volume is especially fragile. Failure of either disk will lose all data on the NAS. I always recommend setting up one volume per drive instead - then if you lose a disk, you still will have the data on the other one.
OR just use RAID-0 with the 2 TB drive, and retire the two 500 GB models.
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