Date: Fri, 22 Sep 2000 18:57:36 -0400 From: Shannon Hendrix <shannon@widomaker.com> To: freebsd-hackers@freebsd.org Subject: SCSI tape speed Message-ID: <20000922185736.C5978@widomaker.com>
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I'm interested in hearing from anyone who uses DAT drives on a DPT SCSI controller, preferrably with FreeBSD 4.1 and an Intel system. I find the speed is very slow, and I know in the past these drives were fine with FreeBSD, though I can't remember which release now. With my most recent install of FreeBSD 4.1, I am lucky to get 3MB/minute on a drive and controller combination that I know can hit 45MB/min. Right now, with NetBSD on an old Sparc 5, they still get 20MB/min or better. No errors, even large restores are perfect, but take many hours to finish. The controller I have is a DPT-2044W, and it currently has the ROM version DPT suggested for use with tape drives. The drives in question are an Archive Python 4-tape robot and a Seagate Scorpion. Both are DDS2 drives. No load on the DPT except for tapes and a CD-ROM burner. I haven't been able to find much information on this particular setup, and most tape woes seem error related, or related to another platform. -- "Those who trade liberty for security will have neither -- | | | (??)" | | | ________________________________________________________________ / | \ s h a n n o n @ w i d o m a k e r . c o m _/ | \_ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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