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

Control, Configuration, and Maintenance Tools
HP Integrity NonStop NS-Series Planning Guide—529567-004
5-15
AC Power-Fail States
AC Power-Fail States
These states occur when a power failure occurs and an optional HP model R5500 XR
UPS is installed in each cabinet within the system:
FRU Replacement Tools
This subsection includes:
Adding, removing, or replacing field replaceable units (FRUs) within Integrity NonStop
NS-series systems requires trained HP customer engineers or other service providers
who are properly trained to service the system.
These software and hardware tool are available to diagnose and replace failed FRUs:
•
OSM on page 5-9
•
System Servicing Information on the CSSI Web on page 5-11
•
Subsystem Control Facility (SCF) on page 5-12
System State Description
NSK_RUNNING NonStop operating system is running normally.
RIDE_THRU OSM has detect a power failure and begins timing the outage. AC
power returning terminates RIDE_THRU and puts the operating
system back into an NSK_RUNNING state. At the end of the
predetermined RIDE_THRU time, if AC has not returned, OSM
executes a PFAIL_SHOUT that results in the system going to
LOW_POWER.
HALTED Normal halt condition. Halted processors do not participate in
power-fail handling. A normal power-on also puts the processors
into the HALTED state.
LOW_POWER HSS informs the p-switch that it is in LOW_POWER state and
then waits until the p-switch removes power to the optics.
POWER_OFF Loss of optic power from the p-switches occurs, or the UPS
batteries suppling the slice modules are completely depleted.
When power returns, the system is essentially in a cold-boot
condition.
Topic Page
Tools and Supplies
5-16
Planning for Replacing FRUs 5-16