Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!rice!rice!sun-spots-request
From: luis@bonito.tds.kth.se (Luis Barriga)
Newsgroups: comp.sys.sun
Subject: Dump parameters for QIC-150.
Keywords: Miscellaneous
Message-ID: <1990Aug13.011600.6478@rice.edu>
Date: 10 Aug 90 11:28:13 GMT
Sender: sun-spots-request@rice.edu
Organization: Sun-Spots
Lines: 29
Approved: Sun-Spots@rice.edu
Originator: spots@titan.rice.edu
X-Sun-Spots-Digest: Volume 9, Issue 303, message 1

We use a 150 Mbyte 1/4 inch cartridge tape Drive. The specification names
the following parameters:

	Data density: 10000 bpi
	Tracks           18 Track Serpentine
	length          600 ft.

When I perform a dump the following happens:

# /etc/dump 0csdtf 600 10000 18 /dev/nrst8 /dev/id000f
  DUMP: Date of this level 0 dump: Fri Aug 10 13:21:45 1990
  DUMP: Date of last level 0 dump: the epoch
  DUMP: Dumping /dev/rid000f (/cm) to /dev/nrst8
  DUMP: mapping (Pass I) [regular files]
  DUMP: mapping (Pass II) [directories]
  DUMP: estimated 298380 blocks (145.69MB) on 0.15 tape(s).
                                 ^^^^^^^      ^^^^^
  ........[stuff deleted]

The estimation shows only 0.15 tape(s), when it should say 0.9X
tape(s)since the capacity is approx. 150 MB.

Anybody got the right parameters?

+     Luis Barriga               +   The Royal Institute of Technology  +
+                                +     Dep. Computer systems (TDS)      +
+                                +          P.O. Box 700 43             +
+   e-address: luis@tds.kth.se   +       S-100 44 Stockholm             +
+                                +              SWEDEN                  +