Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.BERKELEY.EDU
Path: utzoo!decvax!ittatc!dcdwest!sdcsvax!ucbvax!info-vax
From: charlie@ARI-HQ1
Newsgroups: mod.computers.vax
Subject: Use of MOUNT/NOHIGHWATER to improve VMS ver 4 performance
Message-ID: <8602200841.AA11431@ucbvax.berkeley.edu>
Date: Tue, 18-Feb-86 12:00:00 EST
Article-I.D.: ucbvax.8602200841.AA11431
Posted: Tue Feb 18 12:00:00 1986
Date-Received: Thu, 20-Feb-86 23:21:48 EST
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: <charlie@ari-hq1>
Organization: The ARPA Internet
Lines: 16
Approved: info-vax@sri-kl.arpa

Several messages have appeared in this mailing list regarding the use of 
the /NOHIGHWATER qualifier for mounting disk volumes so as to improve 
performance under VMS version 4.  The System Manager who considers taking 
this measure to improve the performance of his system should be aware, 
however, of the security implications of such an action.  The high water 
marking serves to deter disk scavenging attempts.  Therefore, turning it 
off can render sensitive data on the system subject to the possibility of 
unauthorized disclosure.  See the Guide to VAX/VMX System Security, and 
understand thoroughly the implications of this action for your system, before
contemplating using it.  


					Charlie Abzug (Charlie@ARI-HQ1)
					Data Security Officer
					U.S. Army Research Institute
------