Calculation of a 3390-A volume size

Provisioning Guide for Mainframe Systems for VSP One Block 85

Version
10.5.x
Audience
anonymous
Part Number
MK-26VSP1B034-02
ft:lastEdition
2026-05-04

To calculate the entire capacity of a CV, use this formula. For the user-specified-CV-capacity, specify the capacity of the user area in a CV.

The resulting CV capacity is expressed in megabytes:

(ceiling (user-specified-CV-capacity / 1113) * 1120 
* 15 * capacity-of-a-slot ) / 1024

where

  • The value enclosed in ceiling( ) must be rounded up to the nearest whole number.
  • The user-specified-CV-capacity is the capacity of the user area in a CV expressed in cylinders.
  • The capacity-of-a-slot is 58 KB for all mainframe volume emulation types.
Tip: To calculate the capacity of the CV of 3390-A, apply the multiples of 1,113 cylinders to user-specified-CV-capacity in the formula above. For example, if you want to apply 1 cylinder to user-specified-CV-capacity, apply 1,113 cylinders. If you want to apply 1,114 cylinders to user-specified-CV-capacity, apply 2,226 cylinders.