> z/OS 64-bit implies no expanded storage. Is z/VM different in that regard?
It's an LPAR-level option. From the z800 Announcement:
o Single Storage Pool
The single storage pool function is provided on z800 general-purpose
models. With this function, all physical storage is dynamically
designated by LPAR as either central storage or expanded storage as
requirements of active logical partitions dictate.
As a result, the need to pre designate storage as either central
storage or expanded storage prior to IML into LPAR mode on the Storage
Page of the RESET Profile panel is no longer necessary and is no longer
provided. The system programmer now has greater flexibility when
planning the division of storage in order to satisfy anticipated
logical partition definitions.
Without this function, a non-optimum designation of storage might be
made in order to accommodate a range of logical partition definitions
that typically vary from time to time. Single storage pool streamlines
the planning effort for any configuration as the need arises. This
function aids in the migration from 31-bit OS/390 where logical
partitions are, at most, 2 GB of central storage plus optional expanded
storage, to 64 bit z/OS, where logical partitions use only central
storage and no expanded storage.
--
Phil Payne
http://www.isham-research.com
+44 7785 302 803
+49 173 6242039
