Date: Wed, 2 Sep 1998 14:57:38 +0930 From: Greg Lehey <grog@lemis.com> To: Gardner Buchanan <gbuchana@rogers.wave.ca>, freebsd-questions@FreeBSD.ORG Subject: Re: Sony SDT-7000 SCSI DAT - config questions Message-ID: <19980902145738.Y606@freebie.lemis.com> In-Reply-To: <XFMail.980831201746.gbuchana@rogers.wave.ca>; from Gardner Buchanan on Mon, Aug 31, 1998 at 08:13:00PM -0400 References: <XFMail.980831201746.gbuchana@rogers.wave.ca>
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On Monday, 31 August 1998 at 20:13:00 -0400, Gardner Buchanan wrote: > I just picked up one of these (from the subject line: Sony SDT-7000 DDS drive) > very cheap, new but with no docs. I have it attached to an ASUS > SC-200 and all seems well enough. I'm not altogether thrilled with > the throughput I get though. There are some little switches on the > bottom and I've got a PDF manual indicating which way to switch them > for this or that UNIX version. Naturally there is no indication if > any particular setting is desirable under FreeBSD 2.2.7. > > So, does anyone else have one of these and can you offer any advise > on these "unix compatibility" switches. Strange. I don't see anything that's different from one UNIX to another. > I'm seeing ~500K/sec throughput dd`ing 20K blocks to/from /dev/null, > but it should be doing >800K. > > Can anyone offer any hints on magic SCSI configuration pages I > should look into? Check whether you're running in compressed or uncompressed mode. Also, I don't think you'll get more than 500 kB/s out of a DDS-1 tape: you'll need DDS-2 tapes for that. The drive recognizes them automatically. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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