Re: Backup from huge Maildirs

On Tuesday 18 September 2007 09:17:47 Matus UHLAR - fantomas wrote:
> > Matus UHLAR - fantomas wrote:
> > > On 13.09.07 22:38, Raúl Alexis Betancor Santana wrote:
> > >> I suggest you XFS over a LVM of SoftRaid5 for Maildir storage, fast,
> > >> stable and scale very well.
> > >
> > > raid5 for maildir storage and fast? I don't think so.
>
> On 18.09.07 10:13, bon wrote:
> > pretty fast, yes. what would you suggest instead?
>
> raid10 (aka raid 1+0, e.g. stripe of small mirrors). Raid5 tends to be slow
> on filesystems where writes are very often, like mail directories.

If you do that with software raid, it will be slower than a simple raid5, thats because you have first to write to the raid1 device and then to the raid0 device, two times trought the same io routines ... that does not sounds good, at least for me.

-- 
Raúl Alexis Betancor Santana
Dimensión Virtual S.L.