Re: Linux - postgres RAID

Thanks!  That's just the sort of info I am looking for.

I am definitely going with the fastest scsi drives I can get.
Probably a 6 or 8 disk system.  Is there a huge jump between using 4
and 6 drives, or 6 and 8 drives?

On Jan 23, 2006, at 12:42 PM, Steve Atkins wrote:

>
> On Jan 23, 2006, at 11:13 AM, Rick Gigger wrote:
>
>> I figure this would be a good place to ask. I want to build / buy
>> a new linux postgres box.  I was wondering if anyone on this list
>> had some experience with this they'd like to share.  I'm thinking
>> somewhere in the $7k - 15k range.  The post important things are
>> write speed to the disk and good linux driver support for the raid
>> card.  Can anyone recommend a specific raid card / server vendor?
>
> It'll depend on what you're planning on using it for. Performance
> requirements, capacity
> and so on.
>
> For fast writes you'll probably want something like RAID10 with
> lots of spindles. SCSI
> is likely to be somewhat faster, but a lot more expensive. For SATA
> RAID most people
> like the 3ware and Areca cards. I'm using this system, from ASA,
> for pretty much that
> and it seems OK. 5U server, 24 external bay, 2 internal bay
> capacity. And it's opterons,
> which seem to be a bit more PG-friendly than Xeons. It uses the
> 3ware 9550SX card.
> (The general opinion here seems to be that the Areca cards are
> somewhat "better"
> than the 3wares, but a lot more expensive).
>
> http://www.asaservers.com/config_system.asp?config_id=5USATA
>
> Cheers,
>   Steve
>
>
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