From: | "Luke Lonergan" <llonergan(at)greenplum(dot)com> |
---|---|
To: | "Alex Turner" <armtuk(at)gmail(dot)com> |
Cc: | "Bucky Jordan" <bjordan(at)lumeta(dot)com>, "Merlin Moncure" <mmoncure(at)gmail(dot)com>, pgsql-performance(at)postgresql(dot)org |
Subject: | Re: Large tables (was: RAID 0 not as fast as |
Date: | 2006-09-19 03:42:39 |
Message-ID: | C134B53F.31732%llonergan@greenplum.com |
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Thread: | |
Lists: | pgsql-performance |
Yep, Solaris ZFS kicks butt. It does RAID10/5/6, etc and implements most of
the high end features available on high end SANs...
- Luke
On 9/18/06 8:40 PM, "Alex Turner" <armtuk(at)gmail(dot)com> wrote:
> Sweet - thats good - RAID 10 support seems like an odd thing to leave out.
>
> Alex
>
> On 9/18/06, Luke Lonergan < llonergan(at)greenplum(dot)com
> <mailto:llonergan(at)greenplum(dot)com> > wrote:
>> Alex,
>>
>> On 9/18/06 4:14 PM, "Alex Turner" < armtuk(at)gmail(dot)com> wrote:
>>
>>> Be warned, the tech specs page:
>>> http://www.sun.com/servers/x64/x4500/specs.xml#anchor3
>>> <http://www.sun.com/servers/x64/x4500/specs.xml#anchor3>
>>> doesn't mention RAID 10 as a possible, and this is probably what most would
>>> recommend for fast data access if you are doing both read and write
>>> operations. If you are doing mostly Read, then RAID 5 is passable, but it's
>>> redundancy with large numbers of drives is not so great.
>>
>> RAID10 works great on the X4500 we get 1.6GB/s + per X4500 using RAID10 in
>> ZFS. We worked with the Sun Solaris kernel team to make that happen and the
>> patches are part of Solaris 10 Update 3 due out in November.
>>
>> - Luke
>>
>>
>
>
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