From: Joshua D. Drake <jd@commandprompt.com>
To: Vivek Khera <vivek@khera.org>
Cc: Pgsql-Performance ((E-mail)) <pgsql-performance@postgresql.org>
Cc: PostgreSQL General <pgsql-general@postgresql.org>
Subject: Re: [PERFORM] Arguments Pro/Contra Software Raid
Date: Tue, 09 May 2006 11:25:27 -0700
Message-ID: <4460DE97.9040001@commandprompt.com> (raw)
In-Reply-To: <5AF87D32-F602-4973-AA21-84E0CFEA1774@khera.org>
References: <e3pmkc$12mk$1@news.hub.org>
<473FC220-A52C-4954-81E9-A14ED33164C2@blighty.com>
<4460BA8B.7010600@commandprompt.com>
<5AF87D32-F602-4973-AA21-84E0CFEA1774@khera.org>
Vivek Khera wrote:
>
> On May 9, 2006, at 11:51 AM, Joshua D. Drake wrote:
>
>> Sorry that is an extremely misleading statement. SATA RAID is
>> perfectly acceptable if you have a hardware raid controller with a
>> battery backup controller.
>>
>> And dollar for dollar, SCSI will NOT be faster nor have the hard drive
>> capacity that you will get with SATA.
>
> Does this hold true still under heavy concurrent-write loads? I'm
> preparing yet another big DB server and if SATA is a better option, I'm
> all (elephant) ears.
I didn't say better :). If you can afford, SCSI is the way to go.
However SATA with a good controller (I am fond of the LSI 150 series)
can provide some great performance.
I have not used, but have heard good things about Areca as well. Oh, and
make sure they are SATA-II drives.
Sincerely,
Joshua D. Drake
>
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To: pgsql-performance@postgresql.org
Cc: jd@commandprompt.com, vivek@khera.org, pgsql-general@postgresql.org
Subject: Re: [PERFORM] Arguments Pro/Contra Software Raid
In-Reply-To: <4460DE97.9040001@commandprompt.com>
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