Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!seismo!rutgers!sri-spam!ames!ucbcad!ucbvax!edison.ge.COM!uucp
From: uucp@edison.ge.COM (UNIX-to-UNIX Copy)
Newsgroups: comp.os.vms
Subject: Submission for mod-computers-vax
Message-ID: <8704280631.AA19782@edison.GE.COM>
Date: Tue, 28-Apr-87 02:31:31 EDT
Article-I.D.: edison.8704280631.AA19782
Posted: Tue Apr 28 02:31:31 1987
Date-Received: Sat, 2-May-87 03:07:27 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 24

Path: edison!uvacs!virginia!umd5!brl-adm!seismo!rutgers!mit-eddie!uw-beaver!tektronix!decvax!ucbvax!CITHEX.CALTECH.EDU!carl
From: carl@CITHEX.CALTECH.EDU (Carl J Lydick)
Newsgroups: mod.computers.vax
Subject: Re: Disk fragmentation and tape handling
Message-ID: <870425025907.00d@CitHex.Caltech.Edu>
Date: 25 Apr 87 09:59:07 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Distribution: world
Organization: The ARPA Internet
Lines: 13


 >      What are your feelings about the various methods of disk
 > defragmentation?  How important is it? What are are the public domain and
 > third party products available to do it?  Can it be done with plain VMS?

There are a number of them.  How important they are depends strongly on
how fragmented your disk is: if you made a copy of your system on an RMO3
with little fragmentation when you installed VMS 4.5, you don't have to
worry about defragmenting it (since there isn't enough extra space to get
fragmented);  if you've got a user disk that has ancient files removed
regularly and that tends to be fully utilized and to have some large files
on it, defragmentation can make the disk work A LOT better. To defragment
the disk using only VMS, you do an image backup and restore of the disk.