GRS and Virtual CTCs

[Thomas Kern]

The background for this is that we run a z890 with two LPARs on the CP side.
We have real ESCON CTCs between these two LPARS for GRS between z/OS.e and
z/OS. Both of these z/OS(.e) systems are at the 1.6 level. The z/OS system
is a guest under z/VM 5.1. We have just found out that our Disaster Recovery
vendor does not have any hardware that will support z/OS.e.

We are looking at the possibility of running two z/OS guests under z/VM in a
single LPAR. We could then use virtual CTCs between these two guests for GRS.
Does z/VM's support/emulation of CTC's allow for "GRS in a ring
configuration without sysplex"? In the real I/O configuration this requires
BCTC definitions.

/Tom Kern
/301-903-2211

[Rick Troth]

To whom it may concern, I have relocated.
Some details are at

http://www.casita.net/journals/sirsanta/20060129.html

Been trying to "blog" the journey. Sometimes it's hard to write.
(After a bizzy day, who feels like writing things down??)

-- R;