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- Path: sparky!uunet!news.univie.ac.at!alijku11!schiffer
- Message-ID: <19921211.234304081137.NETNEWS@ALIJKU11>
- Date: Friday, 11 Dec 1992 23:43:04 CET
- Newsgroups: comp.sys.sun.admin
- Subject: Re: Help with dump on dat
- From: Stefan Schiffer <schiffer@swe.uni-linz.ac.at>
- X-UserAgent: Nuntius v1.1.1d11
- X-XXDate: Fri, 11 Dec 92 22:32:06 GMT
- References: <Bz2Dq9.Lw2@mail.boi.hp.com>
- Distribution: world
- Organization: Universitaet Linz, Austria
- Nntp-Posting-Host: 140.78.42.42
- Lines: 33
-
- In article <Bz2Dq9.Lw2@mail.boi.hp.com> randy barbour, randyb@boi.hp.com
- writes:
- >NEED HELP WITH DUMP COMMAND ON DAT DRIVE !!!!
- >I encountered problems when using the "dump" command on the following
- >HP-DAT drive. Using a 60 meter 1.3 GB dat tape, I did the following
- >calculations:
-
- ...
-
-
- In "Installing and Configuring HP35470/80A DDS Tape Drives" HP writes:
-
- "Other Hints for SUN
-
- When using the "cpio" command, be sure to set the block size option (-B)
- so
- that you use a block size of 5120 or greater. This will improve
- performance
- significantly.
-
- When using the "dump" command, set the tape size (-s) and density (-d)
- parameters
- to 15000. This will allow you to fill a 90m tape. The defaults for the
- "dump"
- command are setup for QIC drives, and will result in storing only about
- 600 Mbytes."
-
- I may add, that for 60m tapes a tape size of 10000 works fine and that a
- block size
- of 5120 did not show any improved performance when using dump.
-
-
- Stefan Schiffer
-