Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!swrinde!cs.utexas.edu!uunet!virtech!cpcahil
From: cpcahil@virtech.uucp (Conor P. Cahill)
Newsgroups: comp.unix.sysv386
Subject: Re: Tape backup for ISC Unix
Message-ID: <1991Apr06.184020.6657@virtech.uucp>
Date: 6 Apr 91 18:40:20 GMT
References: <9497@cognos.UUCP>
Organization: Virtual Technologies Inc.
Lines: 25

dbullis@cognos.UUCP (Dave Bullis) writes:


>My experience is that QIC 60Mb tapes are interchangable between machines,
>is this generally true?  how about 150Mb tapes?

Both are interchangable between systems that have QIC tape drives 
at similar capacities (except HP systems, of course - they use a proprietary
format).   You may run into problems if you want to take a 150MB tape 
and read it on a 60MB drive.

>It used to be that 150Mb tape could read but not write 60Mb tapes,
>is this still true?

QIC-150 tape drives will write DC600A tapes in QIC-120 format (120MB) that
can be read on most other QIC 150 drives, but not on QIC-60 drives.

>Is SCSI-based versus separate controller (ie.SC499) an issue? How about cost?

Usually the only difference is the slot the separate controller will take up.

-- 
Conor P. Cahill            (703)430-9247        Virtual Technologies, Inc.
uunet!virtech!cpcahil                           46030 Manekin Plaza, Suite 160
                                                Sterling, VA 22170