Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!csd4.milw.wisc.edu!lll-winken!uunet!mmlai!burzio
From: burzio@mmlai.UUCP (Tony Burzio)
Newsgroups: comp.sys.hp
Subject: HP 9144A tape drive speedup
Keywords: Various parameters
Message-ID: <526@mmlai.UUCP>
Date: 7 Apr 89 05:12:00 GMT
Organization: Martin Marietta Labs, Baltimore, MD
Lines: 21


	After a long time reading through the man pages about
find, cpio, and tcio, I came to the conclusion that the backup
script in /etc makes poor use of a 9144A cartridge tape drive.
The following replacement will 1) only backup up the local hfs
file system 2) turns off verification (HP told me it was OK) and
3) lets the tape drive stream using the small (8) buffer size in
conjunction with the read-while-write tape head capability.  Give
this a try, because it speeds the backup -archive process quite a
bit.

	{	find $backupdirs $aflag -fstype hfs -hidden -print	|
		cpio -ocxa			|
		tcio -oVS 8 $dest
	} 2>>$backuplog			# log stderr only.

*********************************************************************
Tony Burzio               * A hacking we will go....
Martin Marietta Labs      *
mmlai!burzio@uunet.uu.net *
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