NonStop NS-Series Operations Guide (H06.03+)

Power Failures: Preparation and Recovery
HP Integrity NonStop NS-Series Operations Guide—529869-001
14-5
Procedure to Recover From a Power Failure
Procedure to Recover From a Power Failure
After power is restored:
1. Power on the system using OSM LLL described in Powering On a System on
page 15-2.
2. Log on to the OSM Service Connection and check the status of all system
components to make sure they are started.
3. Use SCF commands to check the status of external devices and, if necessary, to
restart any external devices to bring them back online.
Setting System Time
Setting the system time is not normally required following a power failure. System time
is maintained by a time-of-day battery in the P-switch that is not affected by a power
outage. If required, however, you can set the system time, either programmatically or
by using the TACL command interpreter. Refer to the Guardian Procedure Calls
Reference Manual or the TACL Reference Manual.
Related Reading
For more information about preparing for and recovering from power failures:
•
The effect of power failures on NonStop NS-series servers, see the NonStop
NS-Series Planning Guide.
•
The ride-through time, see the SCF Reference Manual for the Kernel Subsystem.
•
The TACL SETTIME command, see the TACL Reference Manual.
•
Setting system time programmatically, see the Guardian Procedure Calls
Reference Manual.
•
Removing, installing, and recycling batteries, see the documentation provided for
the type of batteries used in the UPSs.