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* Adaptec 5805 SAS Raid
@ 2008-03-14 17:20 Glyn Astill <glynastill@yahoo.co.uk>
2008-03-14 22:34 ` Re: Adaptec 5805 SAS Raid Leigh Dyer <leigh@eclinic.com.au>
0 siblings, 1 reply; 2+ messages in thread
From: Glyn Astill @ 2008-03-14 17:20 UTC (permalink / raw)
To: pgsql-performance
Any of you chaps used this controller?
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* Re: Adaptec 5805 SAS Raid
2008-03-14 17:20 Adaptec 5805 SAS Raid Glyn Astill <glynastill@yahoo.co.uk>
@ 2008-03-14 22:34 ` Leigh Dyer <leigh@eclinic.com.au>
0 siblings, 0 replies; 2+ messages in thread
From: Leigh Dyer @ 2008-03-14 22:34 UTC (permalink / raw)
To: Glyn Astill <glynastill@yahoo.co.uk>; pgsql-performance
Glyn Astill wrote:
> Any of you chaps used this controller?
>
It looks very similar to the rebadged Adaptec that Sun shipped in the
X4150 I ordered a few weeks ago, though the Sun model had only 256MB of
cache RAM. I was wary of going Adaptec after my experiences with the
PERC/3i, which couldn't even seem to manage a single disk's worth of
read performance from a RAID-1 array, but I was pleasantly surprised by
this card. I'm only running a RAID-1 array on it, with 2 146GB 10krpm
SAS drives, but I was impressed with the read performance -- it seems
quite happy to split sequential reads across the two disks.
Here are the bonnie++ numbers I took during my run-in testing:
Version 1.03 ------Sequential Output------ --Sequential Input-
--Random-
-Per Chr- --Block-- -Rewrite- -Per Chr- --Block--
--Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP
/sec %CP
membrane 12G 54417 89 86808 15 41489 6 59517 96 125266 10
629.6 0
------Sequential Create------ --------Random
Create--------
-Create-- --Read--- -Delete-- -Create-- --Read---
-Delete--
files:max:min /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
/sec %CP
membrane 16 19496 97 +++++ +++ 14220 68 7673 40 +++++ +++
5246 26
I'm not sure if I'd yet be comfortable running a larger array for a
database on an Adaptec card, but it's definitely a great improvement on
the earlier Adaptec hardware I've used.
Thanks
Leigh
>
>
> ___________________________________________________________
> Rise to the challenge for Sport Relief with Yahoo! For Good
>
> http://uk.promotions.yahoo.com/forgood/
>
>
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2008-03-14 17:20 Adaptec 5805 SAS Raid Glyn Astill <glynastill@yahoo.co.uk>
2008-03-14 22:34 ` Leigh Dyer <leigh@eclinic.com.au>
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