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ReadyNAS 636 Upgrade Process
We have several/many NAS units which need to have their storage updated. Existing storage volumes are currently defined as RAID 1 volumes (mirrored) with bit rot protection. The volumes are in the ...
Digital999 wrote:
After both disks that make up a RAID 1 X-Raid volume have been 'synchronized/rebuilt' will the larger capacity just be available or is there some other command that must be entered or the system restarted or ??
The capacity will be available after the second disk completes its resync.
The first resync will be fairly quick (just 2 TB - 4 TB of disk space is mirrored).
The second resync has two phases. First it resyncs the 2 TB - 4 TB again. Then it syncs the remaining 8-10 TB.
Note the sync (mirroring) time doesn't depend on the free space. The entire disk is mirrored.
Thank you.
Saved me lots of issues and time. Over 50 sites to upgrade and this guidance will certainly help.
This is the "magic" of XRAID. It's actually possible to do it manually using the MDADM and BTRFS tools that XRAID also uses. But XRAID will do it all for you. There are a few limitations on how you can expand, some of which seem to be simply because the logic to do the "illegal" ones is just too complicated and likely so rare as to make them not worthwhile implementing. But your case is a very simple and common one that's fully supported.
Well, I must have done something incorrect.
I upgraded a 626 unit with larger drives – worked perfectly as expected.
So I took the disk and inserted it into a ‘sister’ ReadyNAS to upgrade that NAS with more storage.
Removed the ‘old/current’ drive which was smaller and inserted the other ReadyNAS drive that was removed from a different NAS.
The rebuild process did not start for this new/replaced drive.
Is there some secret here that I should have done?
Ignore the last message.
I fumbled around to determine that I needed to format the new drive so it could then be reused.
Documentation could use some updates on this matter -- reuse of a previously used ReadyNAS drive in an existing system.
It's not just drives previously used in a ReadyNAS, but any previously formatted drive. Legacy ReadyNAS did not require that, which lead to many people coming here and see how they could recover what was previously on the drive (you can't!). So this manual formatting is a good thing, though perhaps the manual assumes too much that you'll be using a pristine new drive.
This doesn't affect you much at this point, but I'm posting to help others who may come across the thread.
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