From: Sander <sander@humilis.net>
To: Justin Piszcz <jpiszcz@lucidpixels.com>
Cc: Sander <sander@humilis.net>,
linux-ide-arrays@lists.math.uh.edu, xfs@oss.sgi.com,
linux-raid@vger.kernel.org, linux@vger.kernel.org
Subject: Re: Software RAID5 Horrible Write Speed On 3ware Controller!!
Date: Wed, 18 Jul 2007 14:09:22 +0200 [thread overview]
Message-ID: <20070718120922.GC8029@cumulus> (raw)
In-Reply-To: <Pine.LNX.4.64.0707180734340.7659@p34.internal.lan>
Justin Piszcz wrote (ao):
> On Wed, 18 Jul 2007, Sander wrote:
>> Justin Piszcz wrote (ao):
>>> Its too bad that there are no regular > 4 port SATA PCI-e controllers
>>> out there.
>>
>> Is there a disadvantage to using a SaS controller from for example
>> lsi.com ?
>>
>> http://lsi.com/storage_home/products_home/host_bus_adapters/sas_hbas/index.html
>>
>> I haven't tried them yet, but on paper it looks like an option, no?
>
> Hmm that is also a good idea- but I am afraid there could be a
> similiar issue where it tries to do weird caching stuff, even when the
> drives are in JBOD. Unless they offer a !raid SAS controller that
> supports SATA drives.
I guess they are cheap enough to try (I haven't yet):
PCIe:
http://lsi.com/storage_home/products_home/host_bus_adapters/sas_hbas/lsisas3080xr/index.html
PCI-X
http://lsi.com/storage_home/products_home/host_bus_adapters/sas_hbas/lsisas3081er/index.html
All SaS hardware (controllers, chassis, etc) support SATA disks AFAIK.
I have good experience with the Supermicro 8-Port SATA Card
http://www.supermicro.nl/products/accessories/addon/AoC-SAT2-MV8.cfm
But that is PCI-X while you requested PCIe.
With kind regards, Sander
--
Humilis IT Services and Solutions
http://www.humilis.net
next prev parent reply other threads:[~2007-07-18 12:09 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-18 10:23 Software RAID5 Horrible Write Speed On 3ware Controller!! Justin Piszcz
2007-07-18 10:49 ` Hannes Dorbath
2007-07-18 16:26 ` Justin Piszcz
2007-07-18 17:18 ` Bryan J. Smith
2007-07-18 10:59 ` Al Boldi
2007-07-18 12:01 ` Justin Piszcz
2007-07-18 11:05 ` Gabor Gombas
2007-07-18 11:19 ` Justin Piszcz
2007-07-18 11:26 ` Hannes Dorbath
2007-07-18 11:32 ` Justin Piszcz
2007-07-18 11:37 ` Hannes Dorbath
2007-07-18 11:38 ` Justin Piszcz
2007-07-18 12:51 ` Robin Hill
2007-07-18 14:26 ` Gabor Gombas
2007-07-18 11:17 ` Giuseppe Ghibò
2007-07-18 11:20 ` Justin Piszcz
2007-07-18 17:57 ` Bryan J. Smith
2007-07-18 17:57 ` Bryan J. Smith
2007-07-18 11:26 ` Sander
2007-07-18 11:35 ` Justin Piszcz
2007-07-18 12:09 ` Sander [this message]
2007-07-18 12:19 ` Justin Piszcz
2007-07-18 13:32 ` Sander
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