X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by svr1.postgresql.org (Postfix) with ESMTP id 9E754D82FF for ; Sat, 24 Sep 2005 12:56:04 -0300 (ADT) Received: from svr1.postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 05704-05 for ; Sat, 24 Sep 2005 15:55:58 +0000 (GMT) Received: from pop-knobcone.atl.sa.earthlink.net (pop-knobcone.atl.sa.earthlink.net [207.69.195.64]) by svr1.postgresql.org (Postfix) with ESMTP id 4CE55D91FA for ; Sat, 24 Sep 2005 12:55:57 -0300 (ADT) Received: from elwamui-hound.atl.sa.earthlink.net ([209.86.224.34]) by pop-knobcone.atl.sa.earthlink.net with esmtp (Exim 3.36 #10) id 1EJCNV-0000Nl-00; Sat, 24 Sep 2005 11:55:53 -0400 Message-ID: <5559818.1127577353936.JavaMail.root@elwamui-hound.atl.sa.earthlink.net> Date: Sat, 24 Sep 2005 11:55:53 -0400 (EDT) From: Ron Peacetree Reply-To: Ron Peacetree To: PFC , pgsql-performance@postgresql.org Subject: Re: Advice on RAID card Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Mailer: Earthlink Zoo Mail 1.0 X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, hits=0.259 required=5 tests=[AWL=-0.115, DNS_FROM_RFC_ABUSE=0.374] X-Spam-Level: X-Archive-Number: 200509/325 X-Sequence-Number: 14633 It looks like a rebranded low end Adaptec 64MB PCI-X <-> SATA RAID card. Looks like the 64MB buffer is not upgradable. Looks like it's SATA, not SATA II There are much better ways to spend your money. These are the products with the current best price/performance ratio: http://www.areca.us/products/html/pcix-sata.htm Assuming you are not building 1U boxes, get one of the full height cards and order it with the maximum size buffer you can afford. The cards take 1 SODIMM, so that will be a max of 1GB or 2GB depending on whether 2GB SODIMMs are available to you yet. Ron -----Original Message----- From: PFC Sent: Sep 24, 2005 4:34 AM To: pgsql-performance@postgresql.org Subject: [PERFORM] Advice on RAID card Hello fellow Postgresql'ers. I've been stumbled on this RAID card which looks nice. It is a PCI-X SATA Raid card with 6 channels, and does RAID 0,1,5,10,50. It is a HP card with an Adaptec chip on it, and 64 MB cache. HP Part # : 372953-B21 Adaptec Part # : AAR-2610SA/64MB/HP There' even a picture : http://megbytes.free.fr/Sata/DSC05970.JPG I know it isn't as good as a full SCSI system. I just want to know if some of you have had experiences with these, and if this cards belong to the "slower than no RAID" camp, like some DELL card we often see mentioned here, or to the "decent performance for the price" camp. It is to run on a Linux. Thanks in advance for your time and information. ---------------------------(end of broadcast)--------------------------- TIP 4: Have you searched our list archives? http://archives.postgresql.org