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Re: 12 disks raid setup

From: Vivek Khera <vivek(at)khera(dot)org>
To: pgsql-performance Performance <pgsql-performance(at)postgresql(dot)org>
Subject: Re: 12 disks raid setup
Date: 2008-02-29 18:58:47
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Lists: pgsql-performance
On Feb 29, 2008, at 9:51 AM, Franck Routier wrote:

> my Raid controller is an Adaptec 31205 SAS/RAID controller. The  
> battery
> was an option, but I didn't know it at purchase time. So I have no
> battery, but the whole system is on an UPS.

Go find one on ebay or google search, and plug it in.  Adaptec  
batteries just snap in and sometimes have a bracket to clip them in  

Your performance will be awful without one since you can't safely  
write cache.  Also, if your card has upgradable RAM (but I've never  
seen an adaptec card which could) max it out.

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