> -----Original Message-----
> From: centos-bounces@xxxxxxxxxx
> [mailto:centos-bounces@xxxxxxxxxx] On Behalf Of Feizhou
> Sent: Wednesday, August 22, 2007 9:54 AM
> To: CentOS mailing list
> Subject: Re: SATA vs. SAS
>
>
> >> Option 1) 2 servers each having 2.0TB raid disk with SAS
> >> drives, 2GB ram and standard other features.
> >
> > If going down this road, why not look into getting one of
> > those fancy new storage enclosures where the RAID is built
> > into the enclosure and can allow 2 servers to simultaneously
> > access the arrays with full battery backed write-back cache?
> >
>
> What is available for Linux in this department?
I'm testing out an MD3000 from Dell. It can allow 4 hosts with
single 4x serial paths, or 2 hosts with redundant 4x serial
and can chain up to 2 MD1000s off it for up to 45 spindles.
It was 2 RAID controllers in 2 EMMs with 512MB BBU write-back
that is synchronized between them which act as redundant RAID
controllers. Ships with 4 plain-jane 2 path SAS controllers
for host systems.
Downside, right now, it currently only supports SAS drives,
they hope to have a SAS/SATA firmware update maybe by year-end.
-Ross
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