Le vendredi 16 avril 2010 à 16:00 +1000, Adam Goryachev a écrit :
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> 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'm not sure adding a 3rd drive will really improve the performances. If
you really want better performances, add 2 drives, and go with a RAID10
setup. This will *really* improve both read and write (but especially
reads).
Regards.
>
> Thanks,
> Adam
>
> - --
> Adam Goryachev
> Website Managers
> www.websitemanagers.com.au
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Try the new software tools for yourself. Speed compiling, find bugs
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