Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!nrl-cmf!ukma!gatech!hubcap!ncrcae!ncr-sd!hp-sdd!ucsdhub!isg100!isg300!rwo0
From: rwo0@isg300.UUCP (Roger W. Otterson)
Newsgroups: comp.sys.att
Subject: 9 track storage capacity
Message-ID: <97@isg300.UUCP>
Date: 2 Feb 89 09:00:37 GMT
Reply-To: rwo0@isg300.UUCP (Roger W. Otterson)
Distribution: usa
Organization: Information Systems Group, San Diego, CA
Lines: 15


I have recently been assigned the duty of backing up our system.
We have a 3b2/522 w/ (6) 322mb SCSI drives.  Needless to say it
takes some time to do complete system backups.

My backup device is a SCSI 9track tape drive.

My questions are:

How much can each tape hold (2400 or 3600 feet), and how do I
guesstimate how much tape I will need to backup a file system.
And what are the "magic" formulas to figure all of this out ??

Roger Otterson
Information Systems Group