Date: 11 Sep 1998 03:00:04 +0200 From: dag-erli@ifi.uio.no (Dag-Erling =?iso-8859-1?Q?Co=EFdan?= =?iso-8859-1?Q?Sm=F8rgrav?= ) To: chad@dcfinc.com Cc: stable@FreeBSD.ORG, questions@FreeBSD.ORG Subject: Re: SCSI tape drives Message-ID: <xzpu32fea5n.fsf@hrotti.ifi.uio.no> In-Reply-To: "Chad R. Larson"'s message of "Wed, 9 Sep 1998 23:30:34 -0700 (MST)" References: <199809100630.XAA08373@freebie.dcfinc.com>
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"Chad R. Larson" <chad@freebie.dcfinc.com> writes: > Does anyone here have any experience with SCSI Travan drives under > FreeBSD? If so, how are they working out? I have a Tecmar NS8 P611 which works flawlessly. I know of two other FreeBSD users which have a streamer of that model; one of them is Steinar Haug (sthaug@nethelp.no). It has a jumper that will make it report itself as a different drive for compatibility (apparently because Microsmurf software uses device names instead of SCSI types to select a driver). Removing it has no noticeable effect on functionality, but raises the coolness level of the probe message :) It has hardware compression and "read-while-write technology" (a fancy name for separate read and write heads) which allows you to read back data for comparison without rewinding (assuming the software can take advantage of it). I've never been able to make it go faster than approximately 600 kBps, which is the streaming speed. I don't know if that's because it doesn't work properly or because dump just doesn't push the envelope. I've never had any trouble reading back any of my tapes. I've heard one report of a Tecmar NS8 failing to probe unless SCSI_DELAY was set to a relatively high value (I use 1 myself), but it's attached to a box with an extremely old and crufty motherboard (with a snappy new Adaptec 2940UW adapter though) DES -- Dag-Erling Smørgrav - dag-erli@ifi.uio.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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