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How to change the RAID 5 to RAID 6
Previously, I'm using a ReadyNAS 626X with 4 x 2TB in RAID 5 (X-RAID), then I add a new 2TB and guess it would change to RAID 6 automatically. Unfortunately it still in RAID 5 and the total volume became 8TB.
After check w/. others discussion, it should change to flexRAID first, distroy all volume then re-built all drives to RAID 6.
In this case, does all data will be deleted if distroy all volume? Is there any method can change to RAID 6 easier and no need to destroy all volume or it can keep all data & setting still exist?
Of course I know it can backup all data and system configuration to external hdd then restore back after change to RAID 6, but it may take too much time to restore around 2TB data and w/o disturb the business.
Would appreciate to your help.
Unfortunately Marc_V mis-spoke. XRAID uses RAID-5 for 3 - 6 drives, and will switch to RAID-6 for 7+ drives. So it will never automatically shift to RAID-6 on a six bay NAS.
At this point creating a new volume is the only way to get there. You don't actually need to do a full factory reset. You can
- uninstall any apps
- switch to flex-raid
- delete the current volume
- create a new RAID-6 volume
- recreate your shares
- restore your data
- reinstall any apps
After that, you can switch back to XRAID if you wish (it will stay in RAID-6). You will be able to recreate your shares while the new volume is syncing. You can also restore data while syncing, but you might find that it's faster overall to let the resync complete (avoiding disk thrashing).
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Hi FelixLee
To be able to change to RAID 6 on X-RAID configuration you need to have 6 disks installed so installing another disk should get your RAID configuration change to RAID 6.
You are also correct that another way to change to RAID 6 is to convert to Flex-RAID and destroy the volume to be able to create a new one with RAID 6 configuration. Unfortunately, you will need to backup your data because you will lose it once you destroyed the volume.
Hope this helps!
RegardsHi Marc_V,
That will be great, let me try insert the 6th disk today after office hour, will update you the status after the system resynced tomorrow.
Appreciate your quick response.
Felix
Hi Marc_V,
It doesn't work, it still in RAID 5 when the 6th disk after resynced, it won't change to RAID 6. Is that only one way I can do is distroy the volume then re-built to RAID 6?
Thanks
Unfortunately Marc_V mis-spoke. XRAID uses RAID-5 for 3 - 6 drives, and will switch to RAID-6 for 7+ drives. So it will never automatically shift to RAID-6 on a six bay NAS.
At this point creating a new volume is the only way to get there. You don't actually need to do a full factory reset. You can
- uninstall any apps
- switch to flex-raid
- delete the current volume
- create a new RAID-6 volume
- recreate your shares
- restore your data
- reinstall any apps
After that, you can switch back to XRAID if you wish (it will stay in RAID-6). You will be able to recreate your shares while the new volume is syncing. You can also restore data while syncing, but you might find that it's faster overall to let the resync complete (avoiding disk thrashing).
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