From mboxrd@z Thu Jan 1 00:00:00 1970 From: Justin Piszcz Subject: Re: Software RAID5 Horrible Write Speed On 3ware Controller!! Date: Wed, 18 Jul 2007 08:19:20 -0400 (EDT) Message-ID: References: <20070718112612.GA8029@cumulus> <20070718120922.GC8029@cumulus> Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed Return-path: In-Reply-To: <20070718120922.GC8029@cumulus> Sender: linux-raid-owner@vger.kernel.org To: Sander Cc: linux-ide-arrays@lists.math.uh.edu, xfs@oss.sgi.com, linux-raid@vger.kernel.org, linux@vger.kernel.org List-Id: linux-raid.ids On Wed, 18 Jul 2007, Sander wrote: > 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 > Those links are reversed, but thanks, checking them out now! Justin.