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Forum Discussion
Data: DEGRADED on RN104
Hi guys, extreme help required. Added a second 4TB WD RED into slot 2 of my RN104 NAS tonight and everything started off ok and then suddenly I have the following flashing at me every few seconds.. ...
I don't think I'd insert a new drive if the web interface wasn't responding. That's a sign of trouble. Maybe mdgm can comment...
On your other questions:
-You can't turn off raid unless you delete your existing data volume and switch to flex raid. That will destroy your existing data. If you decide to do it, create one volume for each disk.
-If you hot-insert drive 3 with the default xraid2, when the rebuild completes you will have 8 TB (~7.2 TiB) of storage, and protection any any single disk failure. Adding a fourth drive would bring you up to 12 TB (10.9 TiB).
If you want to protect your data properly you need an independent backup on a different device (even with RAID-1, and certainly with RAID-5). Try not to think about RAID as being a "backup"- it really isn't. By analogy, RAID is like having a spare tire in your automobile. If one tire goes flat, you are still good to go. But it doesn't protect from multiple flats, and it doesn't protect from engine trouble, battery failure, ...
On your other questions:
-You can't turn off raid unless you delete your existing data volume and switch to flex raid. That will destroy your existing data. If you decide to do it, create one volume for each disk.
-If you hot-insert drive 3 with the default xraid2, when the rebuild completes you will have 8 TB (~7.2 TiB) of storage, and protection any any single disk failure. Adding a fourth drive would bring you up to 12 TB (10.9 TiB).
If you want to protect your data properly you need an independent backup on a different device (even with RAID-1, and certainly with RAID-5). Try not to think about RAID as being a "backup"- it really isn't. By analogy, RAID is like having a spare tire in your automobile. If one tire goes flat, you are still good to go. But it doesn't protect from multiple flats, and it doesn't protect from engine trouble, battery failure, ...
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