Hitachi Compute Blade 500 Series User Manual page 84

SEL time
The following table shows precision on timers and how to adjust time.
Item
System
equipment
LPAR
manager
LPAR
2-12
Hitachi Compute Blade 500 Series Logical partitioning manager User's Guide
Time
Used as the timestamp of the logical SEL. Calculated using the
differentials from the LPAR manager system time.
Table 2-7 Timer Precision and Adjustment Method
Time/Timer
counter
System
equipment time
(physical RTC
time)
LPAR manager
system time
(TimerCounter)
4
Logical RTC time ±1
System Operation
Description
Precision
Before Save Time
[sec./day]
Config is
supported
±4 - EFI setup menu
- Enable LPAR
manager system
time
synchronization
- LPAR manager
boot with system
time
synchronization
enabled
TSC: - Enable LPAR
manager system
±4
time
Cpu
synchronization
Frequency:
- LPAR manager
boot with system
±1
time
synchronization
enabled
Guest firmware
command.
Time synchronization
After Save Time
Config is
supported
- EFI setup menu
- Enable LPAR
manager system
time
synchronization
- LPAR manager
boot with system
time
synchronization
enabled
- Periodic time
synchronization
once every 24
hours
- Date and Time
1
screen
- Saving LPAR
manager
configuration
- LPAR manager
shutdown
- Enable LPAR
manager system
time
synchronization
- LPAR manager
boot with system
time
synchronization
enabled
- Periodic time
synchronization
once every 15
minutes
- Date and Time
1
screen
Guest firmware
command.