Date: Thu, 11 Jan 1996 09:39:49 +0100 (MET) From: grog@lemis.de (Greg Lehey) To: bugs@freebsd.netcom.com (Mark Hittinger) Cc: hackers@freebsd.org (FreeBSD Hackers) Subject: Re: DDS-2 (was: ....) Message-ID: <199601110839.JAA04386@allegro.lemis.de> In-Reply-To: <199601101634.KAA14200@freebsd.netcom.com> from "Mark Hittinger" at Jan 10, 96 10:34:15 am
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Mark Hittinger writes: > >>> I'd definitely choose the HP1533A ! >>> It is some three times faster than the Conner, >>> i.e. does 514KB/s (times compression factor). >>> Regarding DDS-2: I've heard multiple times, that DDS-2 tapes are not >>> reliable. And since somebody had recorded nuclear physics data on >>> DDS-2 tapes and had found no way to read back more than a few MB, I >>> tried myself and now would never again trust 120m DDS-2 tapes. > > > I strongly recommend the WANGDAT 3400DX DDS-2 device. It has a hard time > with DDS-C tapes but it is a screamer on DDS-2. I never had any trouble > with them and have used them on several different platforms. I've had nothing but trouble with them. On BSD/OS, with a BT 946C controller, they hang the controller and the system, and you have to power the system off to get the problem to go away. This happened on two different machines. I suspect that this is a firmware problem, and new firmware would solve the problem, but it turns out that WangDAT service is non-existent over here. > On one system > I was regularly backing up more than 10 gig each day to one tape! That depends on your data, not on the drive. The DDS-2 recording format is standardized. I get less than 8 GB with my mix. Greg
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