From: Mark Kirkwood <mark.kirkwood@catalyst.net.nz>
To: David Rees <drees76@gmail.com>
Cc: David Boreham <david_list@boreham.org>
Cc: pgsql-performance@postgresql.org
Subject: Re: New server setup
Date: Thu, 21 Mar 2013 15:26:07 +1300
Message-ID: <514A6FBF.2010700@catalyst.net.nz> (raw)
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On 21/03/13 13:44, David Rees wrote:
> On Thu, Mar 14, 2013 at 4:37 PM, David Boreham <david_list@boreham.org> wrote:
>> You might want to evaluate the performance you can achieve with a single-SSD
>> (use several for capacity by all means) before considering a RAID card + SSD
>> solution.
>> Again I bet it depends on the application but our experience with the older
>> Intel 710 series is that their performance out-runs the CPU, at least under
>> our PG workload.
>
> How many people are using a single enterprise grade SSD for production
> without RAID? I've had a few consumer grade SSDs brick themselves -
> but are the enterprise grade SSDs, like the new Intel S3700 which you
> can get in sizes up to 800GB, reliable enough to run as a single drive
> without RAID1? The performance of one is definitely good enough for
> most medium sized workloads without the complexity of a BBU RAID and
> multiple spinning disks...
>
If you are using Intel S3700 or 710's you can certainly use a pair setup
in software RAID1 (so avoiding the need for RAID cards and BBU etc).
I'd certainly feel happier with 2 drives :-) . However, a setup using
replication with a number of hosts - each with a single SSD is going to
be ok.
Regards
Mark
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To: pgsql-performance@postgresql.org
Cc: mark.kirkwood@catalyst.net.nz, drees76@gmail.com, david_list@boreham.org
Subject: Re: New server setup
In-Reply-To: <514A6FBF.2010700@catalyst.net.nz>
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