Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uwm.edu!lll-winken!sun-barr!newstop!texsun!texbell!bigtex!pmafire!dave
From: dave@pmafire.UUCP (Dave Remien)
Newsgroups: comp.unix.i386
Subject: Re: Backup utilities for ix-386
Keywords: backup ix-386
Message-ID: <820@pmafire.UUCP>
Date: 19 Oct 89 02:14:51 GMT
References: <107@gizzmo.UUCP> <185@softest.UUCP> <[253554b6:333.1]comp.unix.i386;1@vpnet.UUCP> <11954@watcgl.waterloo.edu> <3741@dell.dell.com>
Reply-To: dave@pmafire.UUCP (Dave Remien)
Organization: WINCO, INEL, Idaho
Lines: 22

In article <3741@dell.dell.com+ root@mustang.dell.com (jrh) writes:
+Using the
+-Cbufsize option can speed up the backup process considerably.  I usually 
+use something like the following:
+
+find / -print | cpio -oacmudC128000 > /dev/tape &
+
+This will use 128k byte records (approx.) and decrease overall backup time
+by half or more depending upon the amount of data.  Of course, if you run
+your backups via cron at 3AM, it won't really matter will it?  ;-)

Depends on whether your version of UNIX has the cpio bug.  Some machines
would take the above cpio command and use a 1,280,000 byte buffer.  Also,
the more your tape streams, the less start/stop/reverse/stop/start it
does, and it gets to live longer.  I've never had a motor go out, but
some vendors (HP) recommend that you keep it streaming as much as
possible.  Since the HP streamer costs over $3k, I've take their advice 8-).

-- 
Dave Remien - WINCO Computer Eng. Group -{uunet | bigtex}!pmafire!dave- 
I certainly, absolutely, positively, don't speak for Westinghouse. And I
don't think I want to.			"Dave Barry for President"