From owner-freebsd-scsi@freebsd.org Wed Aug 9 14:27:40 2017 Return-Path: Delivered-To: freebsd-scsi@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 787D7DCE654 for ; Wed, 9 Aug 2017 14:27:40 +0000 (UTC) (envelope-from mi+m@aldan.algebra.com) Received: from smtp.rcn.com (smtp.rcn.com [69.168.97.78]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 45B1474550 for ; Wed, 9 Aug 2017 14:27:40 +0000 (UTC) (envelope-from mi+m@aldan.algebra.com) X_CMAE_Category: , , X-CNFS-Analysis: v=2.2 cv=Aa3zJDfG c=1 sm=1 tr=0 a=2ZyxD0Un1vyHw3hS6RhAvw==:117 a=2ZyxD0Un1vyHw3hS6RhAvw==:17 a=kj9zAlcOel0A:10 a=4mwfk3PxCzGL85_U2lIA:9 a=CjuIK1q_8ugA:10 X-CM-Score: 0 X-Scanned-by: Cloudmark Authority Engine X-Authed-Username: YW5hdEByY24uY29t Authentication-Results: smtp02.rcn.cmh.synacor.com header.from=mi+m@aldan.algebra.com; sender-id=neutral Authentication-Results: smtp02.rcn.cmh.synacor.com smtp.mail=mi+m@aldan.algebra.com; spf=neutral; sender-id=neutral Authentication-Results: smtp02.rcn.cmh.synacor.com smtp.user=anat; auth=pass (PLAIN) Received-SPF: neutral (smtp02.rcn.cmh.synacor.com: 38.125.162.34 is neither permitted nor denied by domain of aldan.algebra.com) Received: from [38.125.162.34] ([38.125.162.34:37989] helo=[192.168.25.92]) by smtp.rcn.com (envelope-from ) (ecelerity 3.6.23.54417 r(Core:3.6.23.0)) with ESMTPSA (cipher=DHE-RSA-AES256-GCM-SHA384) id 03/59-53214-ADB1B895; Wed, 09 Aug 2017 10:27:38 -0400 From: "Mikhail T." Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable Mime-Version: 1.0 (1.0) Date: Wed, 9 Aug 2017 10:27:37 -0400 Subject: Do I need SAS drives?.. Message-Id: <4DFBCE11-913A-4FC9-937D-463B4D49816C@aldan.algebra.com> To: freebsd-hardware@freebsd.org, freebsd-scsi@freebsd.org X-Mailer: iPhone Mail (14G60) X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Aug 2017 14:27:40 -0000 My server has 8 "hot-plug" slots, that can accept both SATA and SAS drives. S= ATA ones tend to be cheaper for the same features (like cache-sizes), what a= m I getting for the extra money spent on SAS? Asking specifically about the protocol differences... It would seem, for exa= mple, SATA can not be as easily hot-plugged, but with camcontrol(8) that sho= uld not be a problem, right? What else? Thank you! --=20 Sent from mobile device, please, pardon shorthand. --=20 Sent from mobile device, please, pardon shorthand.=