From owner-freebsd-scsi@FreeBSD.ORG Tue Jun 27 13:15:26 2006 Return-Path: X-Original-To: freebsd-scsi@freebsd.org Delivered-To: freebsd-scsi@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id F3FC416A407 for ; Tue, 27 Jun 2006 13:15:25 +0000 (UTC) (envelope-from anderson@centtech.com) Received: from mh2.centtech.com (moat3.centtech.com [207.200.51.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8415843DEC for ; Tue, 27 Jun 2006 13:14:51 +0000 (GMT) (envelope-from anderson@centtech.com) Received: from [10.177.171.220] (neutrino.centtech.com [10.177.171.220]) by mh2.centtech.com (8.13.1/8.13.1) with ESMTP id k5RDET2D041501; Tue, 27 Jun 2006 08:14:30 -0500 (CDT) (envelope-from anderson@centtech.com) Message-ID: <44A12F44.8050703@centtech.com> Date: Tue, 27 Jun 2006 08:14:44 -0500 From: Eric Anderson User-Agent: Thunderbird 1.5.0.4 (X11/20060612) MIME-Version: 1.0 To: Jerlique Bahn References: <003e01c699c1$03cc0d00$6400000a@WKSTN501> In-Reply-To: <003e01c699c1$03cc0d00$6400000a@WKSTN501> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.87.1/1564/Mon Jun 26 09:55:16 2006 on mh2.centtech.com X-Virus-Status: Clean Cc: freebsd-scsi@freebsd.org Subject: Re: Viewing SCSI errors.. X-BeenThere: freebsd-scsi@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: SCSI subsystem List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Jun 2006 13:15:26 -0000 Jerlique Bahn wrote: > Hello, > > I've added a tape drive to my server and the drive only seems to work at > 2MBps. The drive should be doing about 24MBps. The tape is a DELL 110T LTO2 > which runs at about 86Gb/hr. > > I am trying to diagnose where my problems could lie, and was wondering how I > could see if there are any errors in the communication between the tape and > the scsi card (320Mbps). I'm quite confident the speed issue is related to > the tape drive or the scsi chain. > > Your suggestions welcomed. How did you measure the 2MBps number? Eric -- ------------------------------------------------------------------------ Eric Anderson Sr. Systems Administrator Centaur Technology Anything that works is better than anything that doesn't. ------------------------------------------------------------------------