As I said a couple of posts ago, I’m replacing the 3TB Seagate Barracuda drives that have had such terrible reliability — 4 failures out of 8 disks in a little over two years — in one or my Synology NAS boxes.
I’ve decided to to this in place, by replacing eachof the four remaining drives in turn. Since the four upgraded drives already in the box are 4TB units, I’ll be replacing the others with 4 TB drives, so that I’ll have more capacity when I’m done.
You can’t just tell the Synology OS that you want to replace a drive. You just take it out. If you’re feeling lucky — and I’m not — you pull the drive when the power is on, slap a new one in, and tell the OS to repair the array. I’m too chicken for that. I shut down the NAS box from the OS web interface, replace the drive, power it back up with the front panel button, and tell it to effect the repair.
The first time it went well.
The second time, it seemed to, but the NAS box stopped being a file server after the rebuild was supposed to be over, which is about two days. When I went to the admin screen, I saw that the progress indicator had gone away.
I went to the resource monitor to see if anything was really happening. It appeared not:
I restarted the box:
After the restart, things appeared to be normal:
I went into the volume to make sure:
Looks good.
I started a rebuild on the new disk:
We’ll see if it hangs again.
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