From: Scott Marlowe <scott.marlowe@gmail.com>
To: Greg Smith <gsmith@gregsmith.com>
Cc: Matthew Wakeling <matthew@flymine.org>
Cc: pgsql-performance@postgresql.org
Subject: Re: Experience with HP Smart Array P400 and SATA drives?
Date: Wed, 10 Dec 2008 12:41:37 -0700
Message-ID: <dcc563d10812101141g67b1399epdd33b5bd8ff08cbc@mail.gmail.com> (raw)
In-Reply-To: <Pine.GSO.4.64.0812101347340.24512@westnet.com>
References: <4934FE60.30702@sime.com>
<493E6023.3030800@sime.com>
<1228838308.13962.0.camel@jd-laptop.pragmaticzealot.org>
<20081209161750.GO26596@yugib.highrise.ca>
<493FB619.5060205@sime.com>
<20081210155208.GR26596@yugib.highrise.ca>
<493FE8B2.9040809@sime.com>
<dcc563d10812100817v119397b8n6b8799fcecb22847@mail.gmail.com>
<alpine.DEB.1.10.0812101803090.4666@aragorn.flymine.org>
<Pine.GSO.4.64.0812101347340.24512@westnet.com>
On Wed, Dec 10, 2008 at 12:13 PM, Greg Smith <gsmith@gregsmith.com> wrote:
> On Wed, 10 Dec 2008, Matthew Wakeling wrote:
>
>> I'd be interested in recommendations for RAID cards for small SATA
>> systems. It's not anything to do with Postgres - I'm just intending to set
>> up a little four-drive array for my home computer, with cheap 1TB SATA
>> drives.
>
> Then why are you thinking of RAID cards? On a Linux only host, you might as
> well just get a standard cheap multi-port SATA card that's compatible with
> the OS, plug the four drives in, and run software RAID. Anything else you
> put in the middle is going to add complications in terms of things like
> getting SMART error data from the drives, and the SW RAID will probably be
> faster too.
Note that you could combine the two and use a caching controller in
jbod mode and do the raid in linux kernel sw mode. Just a thought.
Not sure about the smart stuff though.
>> What PCI-Express or motherboard built-in SATA RAID controllers for about
>> four drives are there out there that are good, and well supported by Linux?
>> What level of support is there for monitoring and reporting of RAID status?
>
> 3ware 9650SE-4LPML is what I'd buy today if I wanted hardware SATA RAID.
> When I made a similar decision some time ago, I bought an Areca 1210
> instead, but two things have changed since then. One, I've become
> increasingly unsatisfied with the limitations of the closed-source
> controller management tool Areca supplies.
Note that Areca's newest controllers, the 1680 series, have a separate
ethernet port with snmp traps so you don't have to use any special
closed source software to monitor them. Just FYI for anyone
considering them.
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To: pgsql-performance@postgresql.org
Cc: scott.marlowe@gmail.com, gsmith@gregsmith.com, matthew@flymine.org
Subject: Re: Experience with HP Smart Array P400 and SATA drives?
In-Reply-To: <dcc563d10812101141g67b1399epdd33b5bd8ff08cbc@mail.gmail.com>
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