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From: dsm@prism.gatech.EDU (Daniel McGurl)
Newsgroups: comp.sys.sequent,comp.periphs
Subject: Re: 8mm cartridges or 4mm DATs for backups?
Message-ID: <24991@hydra.gatech.EDU>
Date: 25 Mar 91 20:35:52 GMT
References: <1991Mar25.193731.5700@aplcen.apl.jhu.edu>
Followup-To: comp.sys.sequent
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Organization: Georgia Institute of Technology
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In article <1991Mar25.193731.5700@aplcen.apl.jhu.edu> mab@aplcen.apl.jhu.edu (N Brockway mark alle 301-725-8427) writes:
>We currently have a dilemma in operating our machine.  We have almost 2GB
>of disk data that needs to be backed up and it takes way too long :-(.  This is
>the hardware/software configuration:

I'm the system administration for a Unisys 6000/70, and we use a 4mm dat
running off SCSI.

Using plain old cpio under ptx the backups take 1:30-2 hours to store over 
1 gigabyte of data.  It's really nifty because it all fits on a single tape.

One thing to be careful (in the event that you get one :), is that they
system configuration entry for the DAT device is listed as a disk drive,
so you have to be careful to add it back in.  I removed the entry thinking
it was a SCSI disk and the system hung the next time I tried to use the
tape drive.

-- 
Danny McGurl                               "How straightforward the game
Office of Information Technology and       when all its rules are respected."
Information and Computer Science Major at:
Georgia Institute of Technology                     ARPA: dsm@prism.gatech.edu