This section discusses some aspects specific to z/OS (or OS/390) disk subsystems. Areas covered include some suggestions on how to configure ESS subsystems yourself using Storwatch, and some hints on StorakeTek's V2X.
Do you know what the z/OS terms cylinder and track mean? These are explained in the 3390 statistics page, along with some data about FICON, ESCON and copper channel speeds.
What are Parallel Access Volumes? What is Multiple Allegiance? These are both explained in the PPAV and MA page
