On Mon, 2008-10-06 at 11:51 -0500, Lukasz Szybalski wrote:
> On Mon, Oct 6, 2008 at 11:26 AM, John Drescher <drescherjm AT gmail DOT com>
> wrote:
> > On Mon, Oct 6, 2008 at 11:24 AM, Chris Picton <chris AT ecntelecoms DOT
> > com> wrote:
> >> On Mon, 2008-10-06 at 09:09 -0400, John Drescher wrote:
> >>> On Mon, Oct 6, 2008 at 7:18 AM, Alan Brown <ajb2 AT mssl.ucl.ac DOT uk>
> >>> wrote:
> >>> > On Fri, 26 Sep 2008, John Drescher wrote:
> >>> >
> >>> >> BTW, I would never use raid0 or LVM (without every PV being raided)
> >>> >> for backup data that I cared about.
> >>> >
> >>> > Spooled data isn't exactly worth keeping. After a bacula restart the
> >>> > contents of those directories are useless anyway.
> >>> >
> >>> I believe the user was considering putting his disk volumes on a raid
> >>> 0 ( or disk spanning lvm) because his raid5 write speed was too slow.
> >>>
> >>> John
> >>
> >> Just to report back:
> >>
> >> I have decided to go with software raid 5, with ext3
> >>
> >> Hardware raid 5 (even though it is proper battery backed hardware raid)
> >> was too slow (I got a maximum of 60 MB/s throughput)
> >>
> > I believe this is a driver issue. Specifically the driver not using
> > the cache in write mode. I have seen these kinds of problems with
> > 3ware cards as well on some linux message boards as well.
>
> Could you specify the hardware raid you are using: name, model, version#?
>
> Thanks,
> Lucas
I have:
Product Name : Intel(R) RAID Controller SRCSAS144E
Serial No : P131721607
FW Package Build: 7.0.1-0026
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