I recently replaced a disk in my NAS that's responsible for some crucial backups, and now it's busy rebuilding the RAID array. Unfortunately, the high I/O demands of this process are causing some backup jobs to fail. I'm looking for suggestions on how to minimize these errors while the rebuild is ongoing. Any tips?
5 Answers
If waiting isn't an option, consider creating a new backup repository on a different device and redirecting your backups there until the RAID rebuild is complete. Once everything's stable, you can transfer them back to the NAS.
Unless your NAS has an option to limit how fast it rebuilds, there's not much you can do except wait it out. You could try removing other access to the NAS to free up more resources. Also, it's strange that your backups are failing just because the NAS is slow; maybe you can adjust the timeout settings for those jobs?
Check your NAS or RAID card settings for a background priority option. Some systems let you allocate resources for rebuilding, which could help manage performance during the rebuild process.
You might have to pause those backup jobs until the RAID rebuild is finished to avoid further errors. It’s not ideal, but that’s probably your best option right now. If you had a hot spare or a clustered NAS, it would’ve made this whole process a lot smoother!
Honestly, one of the simplest solutions would be to just get better hardware. A more robust system could handle these kinds of situations without as much hassle.
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