Restrictions On Using Compatible Super Pav - HPE XP7 User Manual

Operation
Switching over the host
computer mode.

Restrictions on using Compatible Super PAV

The following table lists the restrictions on using Compatible Super PAV.
Restriction
Compatible Super PAV cannot be used in
the system that has a CU in which both
devices with Data Exchange and devices
with mainframes are contained.
Compatible Super PAV does not work in
CUs in which alias volumes are not
defined.
Alias volumes in CUs that do not contain
base volumes which are online cannot be
used by different CUs because they
cannot be recognized by a host computer.
18 Restrictions on using Compatible Super PAV
Phenomenon
I/O operations of Super
PAV might not be
performed in all storage
systems connected to
LPAR even if the PAV mode
of the host computer is
switched to XPAV.
Recommended action
Both devices with Data Exchange and devices with
mainframes cannot be defined in one CU. If both devices
have been already defined as mixed, move either of the
devices to a different CU in order to change the
configuration so that there is no CU in which both devices
are contained. When Super PAV is enabled using Remote
Web Console, you cannot create a configuration where the
devices with Data Exchange and devices with mainframes
are contained in one CU.
Make sure to define one or more alias volumes in CUs in
which you want to use Compatible Super PAV.
In a CU in which you want to use alias volumes for
Compatible Super PAV, make the base volumes come
online to the host computer.
Recommended action
Take alias volumes offline from the host
computers on which alias volumes do not
appear.
(If alias volumes in different CUs do not
appear yet after coming online, take alias
volumes offline again.)