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adamsfamily
Asked: 2021-06-28 01:19:40 +0800 CST

How to make an 8TB protected SHR from a 4TB unprotected SHR (Synology Hybrid RAID)?

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I have a 2-bay Synology Disk Station (DS220j) with a single 4TB Drive in it. There is a SHR Volume 1 on the system. It's currently without protection but it was prepared for another 4TB drive to be added.

As time passed, 4TB is not sufficient anymore and I'm wondering if I can upgrade the DS this way:

  1. Add a 8TB drive into the SHR and let it sync. The capacity will be still 4TB but now protected.
  2. Remove the 4TB drive. Now the capacity should be 8TB unprotected -- is it right?
  3. Add a second 8TB drive dnd let is sync. Now the capacity should be 8TB protected -- is it right?

I'd like to ask if my assumptions above are right?

raid synology

1 Answers

  1. Synology's SHR RAID implementation is unique to them, and makes it easier to use disks with different sizes for a RAID. The process you described above will work,

    Yes, add the 8TB drive. For step #2, when you remove the 4TB drive, your SHR RAID will simply be in a degraded - but still usable - state. Add your 2nd 8TB drive, and let the volume heal, and you'll be all set.

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