VSSI product pricing is based on Million Service Unit (MSU) Processor size. MSU values for IBM and Non-IBM processors can be found at: IBM zSeries Hardware and Software Pricing Information

VPARS and VTAPE are both available for a 60 day free evaluation trial. To request a trial, complete, print and sign the interactive trial form or download and complete the PDF trial agreement. Mail or fax the completed agreement to Virtual Software Systems, Inc. at the address or fax number on the trial agreement. Adobe Acrobat Reader(R) or the equivalent is required to read and/or print the downloaded VSSI Price List or Trial Agreement.

VSSI Trial Form           Download

VTAPE/VPARS 2023 Price List          Download

ShadowDisk/Z 2023 Price List          Download






Multiple System Discounts:

If two Processor Complexes are licensed a 5% discount will apply to each Complex.  If three or more Processor Complexes are licensed a 10% discount will apply to each Complex.
An additional 15% discount will be applied to the ShadowDisk/Z product only, for existing VPARS and VTAPE customers.

Prices are subject to change.  Supersedes all previous price lists.

All Pricing is in U.S. Dollars