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Upgrade drive size inplace without loosing data


alex1002
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I have a Synology with 4*2tb drives. I want know if possible anyone successfully upgrade the drives without loosing their data. My plan is too pull one drive install a new one. Let the array rebuild. Then go to the next one till all done. Then hopefully be able to increase array size. I have done this way with an areca raid card in a server. And worked fine. I know there's a risk and I do have full backup too just incase.

Thank you

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Very possible and very easy as I've done this very thing several times.  Read the doc below and follow the steps. (RE: make sure the volume is repaired before removing another drive)

 

Also to note, the amount of data will make little to no difference.  While I didn't actually run numbers to test, I can assure you that each drive replacement takes a long time. For me moving from 4*3TB drives to 4*4TB drives took a few days. Hope this helps!  (don't forget your backups-be paranoid)

 

https://www.synology.com/en-us/knowledgebase/DSM/help/DSM/StorageManager/volume_diskgroup_expand_replace_disk

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Yes, make sure there are backups, if not you have no protection, you are breaking the RAID (intentionally but none-the-less you are breaking it), not that a RAID array is a backup anyway

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2 hours ago, ImTheTypeOfGuy said:

He was professor no-raid when it comes to backups.

 

 

LOL, I can well believe it :)  I don't know if he ever mentioned it, but he learned that lesson the hard way. I can still recall how pissed he was when a RAID card failed. I may not have understood the details, but I understood very well the loss of data, and that a RAID card was to blame. From then on, he beefed up his backup to what it became when I inherited it. He said that, really, he was to blame, by relying on a piece of hardware to do something it really wasn't designed to do.

 

And, it seems to me, it's probably a good lesson for others to learn from.

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