100 EFS Systems on a Linux Base: Additional Topics
encountering any UnixWare 7.1.2 paging. We defined two virtual processors for each z/OS
system.
Because each FLEX-ES instance maintains a separate time-of-day clock, the sysplex must
be run in a single FLEX-ES instance in order to meet the conditions needed for z/OS to run in
ETR (External Timer Reference) emulation mode. Each FLEX-ES instance is logically
equivalent to a separate System/390 central processor complex (CPC). ETR emulation is
required because the IBM 9037 Sysplex Timer® does not support FLEX-ES.
8.2 Scope
Definition of a base sysplex requires relatively sophisticated systems work such as system
cloning, tuning, problem determination, and specifying z/OS parameters. This paper ...