Hitachi HVM Navigator V03-06 User Manual page 126

• Save HVM configurations on the source and destination server blades when
you have changed HVM firmware versions or the HVM configurations. Also,
back up HVM configurations on the source and destination server blades
together when you have changed any or both of the HVM configurations.
• MAC addresses assigned to shared NIC ports and virtual NIC ports on
LPARs on an HVM may be duplicated, when you set a VNIC System No.,
which has been set for another HVM, for the HVM on the system where
LPAR migration has been executed.
• The assigned state of a USB device becomes 'A' on the destination server
blade. The assigned state on the destination server blade doesn't depend
on the assigned state on the source server blade. However, when the
assigned state on the source server blade is '*', the assigned state on the
destination server blade also becomes '*'. So, when the assigned state is
'R', change the assigned state to '#A' or 'A' before executing LPAR
migration in Concurrent Maintenance mode.
1. When HVMs to be the source and destination HVMs fulfill the first of the
above notes, save HVM configurations on the HVMs and then back up the
HVM configuration. For saving and backing up HVM configuration, see
"Saving and backing up HVM configuration" in "Migration procedures".
2. When you execute LPAR migration in Concurrent Maintenance mode,
setting an LPAR on a server blade which is in a cluster configuration with
Microsoft Failover Cluster as the source LPAR, release the source server
blade from the clustering configuration.
3. Check the following items according to Hitachi Compute Blade HVM
Navigator User's Guide—Monitoring.
– CPU usage ratio on each of the source and destination HVMs is over
80%.
– CPU usage amount by SYS2 is over 0.8 cores.
– There are one or more NIC ports which are being used over 50% for the
bandwidth of each NIC port on the source or destination HVM.
It's possible that a timeout for LPAR migration in Concurrent Maintenance
mode occur when you execute LPAR migration in Concurrent Maintenance
mode under the condition that one or more of the above items are fulfilled.
3-30 Migration procedures
HVM Navigator User's Guide - Migration