From owner-freebsd-questions Fri Jul 9 6:57:38 1999 Delivered-To: freebsd-questions@freebsd.org Received: from hostigos.otherwhen.com (dialin2017.pernet.net [205.229.2.17]) by hub.freebsd.org (Postfix) with ESMTP id 4BEE1155E4 for ; Fri, 9 Jul 1999 06:56:26 -0700 (PDT) (envelope-from mavery@mail.otherwhen.com) Received: from mail.otherwhen.com (mail.2.229.205.in-addr.arpa [205.229.2.19] (may be forged)) by hostigos.otherwhen.com (8.8.6/8.7.3) with ESMTP id IAA17041; Fri, 9 Jul 1999 08:55:58 -0500 (CDT) Message-Id: <199907091355.IAA17041@hostigos.otherwhen.com> Received: from PORKY/SpoolDir by mail.otherwhen.com (Mercury 1.45); 9 Jul 99 08:53:47 -0600 Received: from SpoolDir by PORKY (Mercury 1.45); 9 Jul 99 08:53:17 -0600 From: "Mike Avery" To: Mark Ovens Date: Fri, 9 Jul 1999 08:53:08 -0500 MIME-Version: 1.0 Content-type: text/plain; charset=US-ASCII Content-transfer-encoding: 7BIT Subject: Re: HP T4000s Tape Drive problems Reply-To: mavery@mail.otherwhen.com Cc: mavery@mail.otherwhen.com, jsd@gamespot.com, freebsd-questions@FreeBSD.ORG In-reply-to: <19990709011948.A254@marder-1> References: <199907082224.PAA27606@opengovt.open.org>; from The Clark Family on Thu, Jul 08, 1999 at 03:53:08PM -0700 X-mailer: Pegasus Mail for Win32 (v3.12) Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On 9 Jul 99, at 1:19, Mark Ovens wrote: > On Thu, Jul 08, 1999 at 03:53:08PM -0700, The Clark Family wrote: > > The HP stuff is 4mil isn't it? If so, DAT is 8mil right? > > So HP isn't DAT its 4mil. > DAT is 4mm. 8mm? are you sure you're not thinking of Exabyte? > HP make DAT drives as well. DAT is 4mm. 8mm is not DAT. DAT is Digital Audio Tape. It got used by data processing types because it was (arguably) the first (affordable) tape system designed to be a digital tape system. 8mm is video. Also... just as when you say DLT you are usually saying "Quantum", as far as I know all the 8mm data drives are made by ExaByte, no matter whose name is on the faceplate. > > My theory is, if your servers can't keep up a stream of data > > sufficient to keep a DLT7000 streaming, then you need to rethink > > how you build servers. An interesting theory. One that doesn't really survive a street test. A key bottleneck is how fast SCSI drives can REALLY deliver data. With a RAID, you can usually keep a 7000 series drive streaming. With plain old SCSI drives, no. Not in the real world. Mike ====================================================================== Mike Avery MAvery@mail.otherwhen.com (409)-842-2942 (work) ICQ: 16241692 * Spam is for lusers who can't get business any other way * A Randomly Selected Thought For The Day: A friend in need is a pest indeed. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message