From: Greg Jaskiewicz <gryzman@gmail.com>
To: John Lister <john.lister@kickstone.com>
Cc: postgres performance list <pgsql-performance@postgresql.org>
Subject: Re: New server setup
Date: Wed, 13 Mar 2013 15:50:51 +0000
Message-ID: <38D48FB0-92A8-433B-8D34-4C63738B45BA@gmail.com> (raw)
In-Reply-To: <51409C51.1070601@kickstone.com>
References: <4D6D1410-2208-4DAA-BD64-69BE1FD94E55@autouncle.com>
<513CADB7.4030803@2ndQuadrant.com>
<CAJY59_jNGwrPceXg8k04=1VWTTZTFTPTh+jGHopx92c+17Cj1w@mail.gmail.com>
<51409C51.1070601@kickstone.com>
List-Unsubscribe: <mailto:majordomo@postgresql.org?body=unsub%20pgsql-performance>
On 13 Mar 2013, at 15:33, John Lister <john.lister@kickstone.com> wrote:
> On 12/03/2013 21:41, Gregg Jaskiewicz wrote:
>>
>> Whilst on the hardware subject, someone mentioned throwing ssd into the mix. I.e. combining spinning HDs with SSD, apparently some raid cards can use small-ish (80GB+) SSDs as external caches. Any experiences with that ?
>>
> The new LSI/Dell cards do this (eg H710 as mentioned in an earlier post). It is easy to set up and supported it seems on all versions of dells cards even if the docs say it isn't. Works well with the limited testing I did, switched to pretty much all SSDs drives in my current setup
>
> These cards also supposedly support enhanced performance with just SSDs (CTIO) by playing with the cache settings, but to be honest I haven't noticed any difference and I'm not entirely sure it is enabled as there is no indication that CTIO is actually enabled and working.
>
SSDs have much shorter life then spinning drives, so what do you do when one inevitably fails in your system ?
--
Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org)
To make changes to your subscription:
http://www.postgresql.org/mailpref/pgsql-performance
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Reply to all the recipients using the --to and --cc options:
reply via email
To: pgsql-performance@postgresql.org
Cc: gryzman@gmail.com, john.lister@kickstone.com
Subject: Re: New server setup
In-Reply-To: <38D48FB0-92A8-433B-8D34-4C63738B45BA@gmail.com>
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
This inbox is served by DDX for PostgreSQL; see mirroring instructions
for how to clone and mirror all data and code used for this inbox