Hitachi Compute Blade 2000 User Manual page 1379

The following table describes timers and relations with each time.
Timer
SVP timer Implemented in SVP.
BMC timer Implemented in BMC.
BMC time is used for the time field in SEL.
System unit Implemented in a server blade.
timer
With no time zone
LPAR manager only supports local time
(*1)
NTP server Distributes time to devices on a network.
Provides UTC time.
LPAR manager Time of LPAR manager on a server blade
system time
Calculated by adding time shown by the
system unit timer at LPAR manager boot
and a lapse of time on the timer counter.
LPAR timer Used as the reference for OS system time.
Virtualized system unit timer: differential
time between LPAR manger system time
and OS system time. (*2)
LPAR SEL timer Used as the reference for LPAR SEL time.
Virtualized SEL timer: differential time
between LPAR manager system time and
OS system time. (*2)
LPAR SEL time Time zone for LPAR SEL time
zone
Used when LPAR manager creates SEL.
OS system time Guest OS time
Calculated by adding time shown at LPAR
manager boot and a lapse of time on the
LPAR timer at OS boot, a lapse of time
calculated using the values on the timer
counter, and the number of timer interrupts,
and the time zone.
: No action required.
-: Not supported.
\: Not defined in the architecture: Out of target
*1: System unit timer is updated when NTP server is used. If without NTP server, it is not
updated.
*2: Differential time between LPAR timer and LPAR SEL timer is stored in the management
module by saving it on the LPAR manager screen. Save it often. Especially save it when
changing the OS time.
Description
Local
1328
Support for
UTC DST
time
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