From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Prof. Dr. Klaus Kusche" Subject: Good SAS adapters for 6 Gb/s SATA SSD's (with TRIM)? Date: Thu, 11 Aug 2011 17:18:27 +0200 Message-ID: <4E43F2C3.9000808@computerix.info> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from www74.your-server.de ([213.133.104.74]:55002 "EHLO www74.your-server.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752288Ab1HKPlM (ORCPT ); Thu, 11 Aug 2011 11:41:12 -0400 Received: from [78.46.5.203] (helo=sslproxy01.your-server.de) by www74.your-server.de with esmtpsa (TLSv1:AES256-SHA:256) (Exim 4.72) (envelope-from ) id 1QrX1s-0006Y2-2r for linux-scsi@vger.kernel.org; Thu, 11 Aug 2011 17:18:40 +0200 Received: from [195.243.195.230] (helo=[10.10.0.222]) by sslproxy01.your-server.de with esmtpsa (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.69) (envelope-from ) id 1QrX7C-0003NB-2P for linux-scsi@vger.kernel.org; Thu, 11 Aug 2011 17:24:10 +0200 Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org I'm looking for ways to hook up fast 6 Gb/s SATA SSD's (non-RAID!) to (server or i-X58) mainboards which do not have native 6 Gb/s SATA. From the reviews I've read so far, two things became obvious: * The SSD's I'm looking at really want a working SATA TRIM command. * All the onboard Marvell 88SE9128 (or ASmedia) solutions seriuosly lack performance, as do PCIe cards based on those chips. So basically, there seem to be two choices: 1.) LSI 2008 2.) Marvell 9485 1.) seems to be fast, reliable and well-supported, but as far as I can tell, it doesn't support TRIM at all: It neither maps SCSI unmap to SATA TRIM, nor accepts TRIM as a SATA passthrough command. Is that true? I didn't find much about 2.) * The only cards based on this chip are the HighPoint 27xx, or did I miss something? * Running a 27xx with the mvsas driver was reported to have stability problems or random errors. Are these problems solved? * Is the 27xx fast (with SATA SSD's & mvsas driver), i.e. significantly faster than onboard SATA 3 Gb/s ports? * Does the 27xx+mvsas support TRIM when connected to SATA drives? Are there any other solutions? --=20 Prof. Dr. Klaus Kusche Private address: Rainstra=DFe 9/1, 88316 Isny, Germany +49 7562 6211377 Klaus.Kusche@computerix.info http://www.computerix.inf= o Office address: NTA Isny gGmbH, Seidenstra=DFe 12-35, 88316 Isny, Germa= ny +49 7562 9707 36 kusche@nta-isny.de http://www.nta-isny.de -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html