**********
**********
NOTE:
**********

	I have just read the DECUS rules which say we can not provide
	source files for DEC software.  Consequently, we can not include
	the source files for the print symbiont.  All references to the
	print quotas should be ignored.

*******************************************************************************



ISUQUOTA is a system of programs developed to enforce resource quotas for
VAX users at Iowa State University.  Some of the quotas are enforced using
VMS facilities, e.g. session CPU limit, and some are enforced by ISUQUOTA
facilities, e.g. cumulative CPU limit.  The system has been in use at ISU
since 1980 although the current version was installed Spring semester 1983.

ISUQUOTA enforces the following quotas:
	1. Session and cumulative CPU
	2. Session and cumulative connect time (interactive processes)
	3. Inter- and intra- session disk space
	4. Single-job and cumulative print pages
	5. Number of concurrent interactive sessions

ISUQUOTA also performs the following functions:
	1. Provides warnings when cumulative resource usage is within
	   90% of quota.
	2. Enforces authorization/expiration dates, and warns when the
	   current time is within two days of expiration date.
	3. Performs a logout purge on all files within the login
	   default directory tree.

ISU does not perform cost accounting for the VAX systems at the time this
is being written; however, we will be going to a cost accounting system
Fall semester 1983.  There are cost accounting facilites in this version
of ISUQUOTA, but the costs are only displayed at logout; dollar quotas
are not enforced.  The programs will probably need to be modified in order
to implement cost accounting.  For example, we will probably replace all
the cumulative quotas with a single quota (dollars) but retain the session
quotas.  Final decisions regarding the cost accounting implementation have
not yet been made.


ISUQUOTA consists of three major components:

	1. System programs and command files which implement ISUQUOTA
	   for the VAX users.  These programs enforce quotas, log events,
	   and perform some accounting functions.  The programs were 
	   developed primarily by the Iowa State University Computation 
	   Center (ISUCC) VAX Systems group.  All the files required to
	   create the system portion of ISUQUOTA are in the sub-directory
	   [.SYSTEM].  The README.LIS file describes the implementation
	   procedure and the programs.

	2. Accounting programs and command files which perform accounting
	   and clerical tasks.  These programs create the user data base,
	   generate reports, and perform accounting functions.  The programs
	   were developed primarily by the ISUCC Accounting group.  All the
	   files required to create the accounting portion of ISUQUOTA are
	   in the sub-directory [.ACCTG].  The README.LIS file describes the
	   implementation procedure and the programs.

	3. The ISUQUOTA data bases consist of two data files.  The Quota-User 
	   Authorization eXtension (QUAX) file is an indexed file, analogous 
	   to the User Authorization File, which contains the ISUQUOTA data 
	   for each username on the system.  A second file, TTINFO, contains 
	   information regarding the location of terminals. This file was 
	   originally created for use with a program which displays the
	   interactive processes on the system.  The ISUQUOTA login program
	   uses it when writing the terminal record to the accounting log.
	   Sample QUAX and TTINFO files are stored in the sub-directory
	   [.FILES].

Note:	Computer terminals at ISU connect to ISUCC computers through a PDP 11
	and PCL-11 (the communications switch - ComSw) using locally written
	software.  TTDRIVER has been modified to support the ComSw, and ports
	coming through the ComSw are designated TPxx.