Re: Ideal hardware configuration for pgsql - Mailing list pgsql-general

Hi all,

When I checked the Promise site about a week and a half ago, there
wasn't any mention of Linux support, and doing a quick search for it
around the Net didn't find any Linux support for this controller either.

Does anyone know of working Linux drivers for it?

Regards and best wishes,

Justin Clift

Steve Ackerman wrote:
>
> A note about SCSI vs IDE... I have recently tried both on a dual P3 with
> 1gb of ram running Mandrake 7.2. I was amazed the idle CPU's were
> running near 20-23% with nothing other then a bash shell running on 2
> IBM IDE ATA 100 drives. I converted to 2 IBM SCSI U2 drives and the idle
> CPU's went down to 0-2%. This was a tremendous difference. I feel SCSI
> is a must.
>
> I would like to try one of those new Promise Supertrak ATA 100 RAID 5
> cards or hear from someone who has tried one... Anyone? I read they have
> the same onboard CPU as the Adaptec ultra160 RAID 5 card and can have up
> to twice as much onboard cache (128mb) as the SCSI counterpart. It is
> true hardware level raid 5 with a hot spare and each of the up to 6
> drives is on its own interface. I would think this would alleviate the
> onboard IDE / CPU burn and improve the IDE performance tremendously.
>
> The cost of the Promise Supertrak is over $100 more than the Adaptec
> ultra 160 card, but the ATA 100 drives are very inexpensive compared to
> SCSI. I found that you could get more than 4x the space for 25% less
> money with IDE ATA 100 RAID 5.
>
> If this is true... IDE RAID 5 might be a good alternative to SCSI.
>
> As for the Intel vs Sparc, well I use both. The Intel's are great when
> you need Windows but when you need performance the Intel just can't keep
> up with the stability, raw power or speed of Solaris 8 on a Sun machine.
> As for the cost, we use HP dual 700 CPU x86 Netservers which cost about
> $30,000ea and with the Sun Developer program we saved 40% on our Sun
> machines which put the Sun E220 dual CPU in the same ballpark only it
> will run circles around the HP and I think anyone who develops with Java
> can become a Sun Developer.
>
> Steve Ackerman
>
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