Re: SAN vs Internal Disks

Hi,

How about the Dell Perc 5/i card, 512MB battery backed cache or IBM
ServeRAID-8k Adapter?

I hope I am sending relevant information here, I am not too well versed with
RAID controllers.

Regards,
Harsh

On 9/6/07, Scott Marlowe <scott(dot)marlowe(at)gmail(dot)com> wrote:
>
> On 9/6/07, Harsh Azad <harsh(dot)azad(at)gmail(dot)com> wrote:
> > Thanks Scott, we have now requested IBM/EMC to provide test machines.
> > Interestingly since you mentioned the importance of Raid controllers and
> the
> > drivers; we are planning to use Cent OS 5 for hosting the DB.
>
> What RAID controllers have you looked at. Seems the two most popular
> in terms of performance here have been Areca and 3Ware / Escalade.
> LSI seems to come in a pretty close third. Adaptec is to be avoided
> as are cheap RAID controllers (i.e. promise etc...) battery backed
> cache is a must, and the bigger the better.
>
> > Firstly, I could only find postgres 8.1.x RPM for CentOS 5, could not
> find
> > any RPM for 8.2.4. Is there any 8.2.4 RPM for CentOS 5?
> >
> > Secondly, would investing into Redhat enterprise edition give any
> > performance advantage? I know all the SAN boxes are only certified on
> RHEL
> > and not CentOS. Or since CentOS is similar to RHEL it would be fine?
>
> for all intents and purposes, CentOS and RHEL are the same OS, so any
> pgsql rpm for one should pretty much work for the other. At the
> worst, you might have to get a srpm and rebuild it for CentOS / White
> Box.
>

--
Harsh Azad
=======================
Harsh(dot)Azad(at)gmail(dot)com