From: Mark Lewis <mark.lewis@mir3.com>
To: Mikael Carneholm <Mikael.Carneholm@WirelessCar.com>
Cc: Pgsql performance <pgsql-performance@postgresql.org>
Subject: Re: Hardware: HP StorageWorks MSA 1500
Date: Thu, 20 Apr 2006 11:43:20 -0700
Message-ID: <1145558600.29754.152.camel@archimedes> (raw)
In-Reply-To: <7F10D26ECFA1FB458B89C5B4B0D72C2B3E3F4C@sesrv12.wirelesscar.com>
References: <7F10D26ECFA1FB458B89C5B4B0D72C2B3E3F4C@sesrv12.wirelesscar.com>
Hmmm. We use an MSA 1000 with Fibre Channel interconnects. No real
complaints, although I was a little bit disappointed by the RAID
controller's battery-backed write cache performance; tiny random writes
are only about 3 times as fast with write caching enabled as with it
disabled, I had (perhaps naively) hoped for more. Sequential scans from
our main DB (on a 5-pair RAID 10 set with 15k RPM drives) get roughly
80MB/sec.
Getting the redundant RAID controllers to fail over correctly on Linux
was a big headache and required working the tech support phone all day
until we finally got to the deep guru who knew the proper undocumented
incantations.
-- Mark Lewis
On Thu, 2006-04-20 at 20:00 +0200, Mikael Carneholm wrote:
> We're going to get one for evaluation next week (equipped with dual
> 2Gbit HBA:s and 2x14 disks, iirc). Anyone with experience from them,
> performance wise?
>
> Regards,
> Mikael
>
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To: pgsql-performance@postgresql.org
Cc: mark.lewis@mir3.com, Mikael.Carneholm@WirelessCar.com
Subject: Re: Hardware: HP StorageWorks MSA 1500
In-Reply-To: <1145558600.29754.152.camel@archimedes>
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