Adam Goryachev wrote:
> Just had a thought ... dangerous I know :)
>
> Would it improve backuppc performance to use RAID1 with 3 drives?
> Obviously writes are not improved, but it would seem the majority of
> work done on the FS are random reads...
>
> ie, new files, and unlinks for old expiring files/backups are the only
> writes (ok, plus logging). Other than that, there is a lot of reading
> both for every backup as well as for the nightly prune process.
>
> Currently, I'm using linux software RAID1 from md, with 2 x 1TB SATAII
> HDD's, but thinking that adding a third HDD might improve performance
> (albeit not increasing capacity).
I don't know about performance, but it would definitely increase
redundancy. I use this exact same setup here and I periodically pull
and replace the third drive so I can have a backup of the backup server.
--
Bowie
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