Time Difference At N+M Cold Standby - Hitachi Compute Blade 2000 User Manual

Time difference at N+M cold standby

Time difference might occur in LPARs when partitions are switched under N+M cold
standby environment. If it occurs, adjust the time on the guest OS.
When the failed partition is recovered, perform the following steps.
1 Start the active partition, and then set the system equipment time with the setup
menu.
2 Restore configuration from the standby partition to the active partition.
3 Perform Adjust LPAR Time on the Date and Time screen.
4 Save the configuration with F9: Save Configuration on the LPAR manager Menu
screen.
5 Activate the LPAR.
N+M cold standby with virtual NIC
system number expansion
The following table shows whether N+M cold standby is supported due to
expansion of the NIC system number. LPAR manager firmware version on the
standby server blade is later than that on the active server blade.
Expansion of
virtual NIC
system number
Not supported
Supported
*1: If you expand virtual NIC system numbers to 129 in the standby server blade, data
cannot be restored from the standby server blade to the active server blade.
UPS (Uninterruptible Power Supply)
It takes about 30 seconds longer for server blades to shut down after a power failure than
that in the basic environment. It might take more seconds depending on the number of
activated LPARs.
Active
Virtual NIC Expansion of
system number virtual NIC
system number
1 to 128 Not supported
Supported
1 to 128 Not supported
Supported
129 or greater Not supported
Supported
1415
Standby
N+M cold standby
Supported?
Supported
Supported *1
Not supported
Supported
Not supported
Supported