From owner-freebsd-questions@FreeBSD.ORG Fri Aug 18 18:13:35 2006 Return-Path: X-Original-To: freebsd-questions@freebsd.org Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C10B416A588 for ; Fri, 18 Aug 2006 18:13:35 +0000 (UTC) (envelope-from ml.freebsd.questions@gmail.com) Received: from py-out-1112.google.com (py-out-1112.google.com [64.233.166.177]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5693043D45 for ; Fri, 18 Aug 2006 18:13:35 +0000 (GMT) (envelope-from ml.freebsd.questions@gmail.com) Received: by py-out-1112.google.com with SMTP id o67so1225140pye for ; Fri, 18 Aug 2006 11:13:34 -0700 (PDT) DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:to:subject:mime-version:content-type:content-transfer-encoding:content-disposition; b=l2Us+bi7gwATUoHZQjP7VlwCWy6ibS76dkVL91CEv+N5qN8Oh73oPFQEMzhL5d/MW28uoPAm0BC/dfrxd5gLeAwRyCJnplH/cBGjp++J6rJGaBX6NIL+IUyzqHf7vY/pNF0XfSjKeiABBg6l8Nu2+2wWkXUGV1lUn3R74Oe6/EE= Received: by 10.35.96.11 with SMTP id y11mr6412402pyl; Fri, 18 Aug 2006 11:13:34 -0700 (PDT) Received: by 10.35.65.10 with HTTP; Fri, 18 Aug 2006 11:13:34 -0700 (PDT) Message-ID: <10549b080608181113o5340459ehc68c2ca5eec35c0c@mail.gmail.com> Date: Fri, 18 Aug 2006 14:13:34 -0400 From: "FreeBSD Questions" To: "FreeBSD Questions" MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline Subject: SCSI disks spinning down X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 18 Aug 2006 18:13:35 -0000 I have a server, running FBSD 5.4, that has six SCSI disks in it. It's primarily a fileserver for IT, and it's not access frequently, but it does get some use. Most of the time--any time it's been sitting for a while and not accessed recently--reading from the drive takes a few seconds. I presume this is because the drive has spun down due to it's idleness and the delay is because the drive is spinning up again when I access it. Is there a way to disable this? The drives are IBM Deskstar drives (DPSS-318350M), and I don't know if this feature is a feature in the SCSI subsystem somewhere on FBSD or a jumper setting on the drive or what. I'm not even sure I can turn it off so the drives don't spin down. Any ideas, anyone? Thanks!