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Forum Discussion
Problems upgrading drives in RN 104
Hi guys, I have a RN 104 that had 4 x 2tb drives in it, and recently acquired 4 x WD Red 4tb drives. Everything was going smoothly with upgrading the drives, the first one started almost righ...
Do you have a backup?
I would advise updating your backup before replacing disks one by one to expand your volume.
When you replace a disk the resulting resync puts heavy stress on all the disks. If a disk you don't replace is failing unbeknownst to you then you can run into problems. RAID-5 can withstand a single disk failure, but when you replace a disk the volume is degraded until the sync completes.
This sounds like something which would require a support case to investigate, but there would be some costs involved.
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