Re: Asking for assistance in determining storage requirements

No other takers on this one?

I'm wondering what exactly "direct attached storage" entails?

At PG Con I heard a lot about using only direct-attached storage, and not a SAN.
Are there numbers to back this up?

Does fibre-channel count as direct-attached storage? I'm thinking it would.

What exactly is recommended against? Any strorage that is TCP/IP based?

On Thu, Jul 9, 2009 at 11:15 AM, Chris
Barnes<compuguruchrisbarnes(at)hotmail(dot)com> wrote:
> You assistance is appreciated.
>
>
> I have question regarding disk storage for postgres servers
>
>
>
> We are thinking long term about scalable storage and performance and would
> like some advise
> or feedback about what other people are using.
>
>
>
> We would like to get as much performance from our file systems as possible.
>
>
>
> We use ibm 3650 quad processor with onboard SAS controller ( 3GB/Sec) with
> 15,000rpm drives.
>
> We use raid 1 for the centos operating system and the wal archive logs.
>
> The postgres database is on 5 drives configured as raid 5 with a global hot
> spare.
>
>
>
> We are curious about using SAN with fiber channel hba and if anyone else
> uses this technology.
>
> We would also like to know if people have preference to the level of raid
> with/out striping.
>
> Sincerely,
>
> Chris Barnes
> Recognia Inc.
> Senior DBA
>
> ________________________________
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