SCF Reference Manual for the Kernel Subsystem

3. Change the power failure time interval. This example uses the ALTER command to change the
time interval to 40 seconds:
-> ALTER, POWERFAIL_DELAY_TIME 40
This change takes effect immediately.
4. Confirm the changed power failure time interval with another INFO command.
If you need to reverse this operation, repeat the ALTER command with the original value.
On Integrity NonStop NS-series servers and Integrity NonStop BladeSystems, you can specify
RIDETHRUONLY instead of specifying a specific value. Specifying RIDETHRUONLY causes the
operating system to wait indefinitely.
NOTE: Do not specify power failure delay time longer than the capacity of your uninterruptible
power supply (UPS). When you specify a value for POWERFAIL_DELAY_TIME, you are controlling
only the amount of time the operating system waits. You are not controlling how long the UPS lasts,
nor are you limiting how much heat is generated. In determining an appropriate value, make sure
you take into account the capacity of the UPS and the thermal attributes of the room. See the
appropriate planning guide for more information.
Changing the System Name or System Number (G-Series RVUs)
On systems running G-series RVUs, changes to the system name and system number require a hard
reset of the cold-load processor, followed by a system load.
To avoid introducing duplicate system names into the Network Routing Table (NRT) when you
change the system name or number, read the section on managing the network in the Expand
Configuration and Management Manual
Changing the system name or system number as documented in the NonStop S-Series Hardware
Installation and FastPath Guide is intended to be used only when setting up a new NonStop S-series
server.
CAUTION: Before changing the system name or system number on an existing system, contact
your database administrator or service provider. To avoid losing data, you must modify database
catalogs and file labels if you are running any of these complex applications:
• DSM/SCM
• DSM/Tape Catalog (MEDIACOM)
• Enscribe
• ODBC/NOS
• Open System Services
• RDF
• ServerNet/FX
• HP Storage Management Facility (SMF)
• HP NonStop SQL/MP
• HP NonStop Transaction Management Facility (TM)
Other applications, as well as application control files such as the Pathway PATHCTL file, might
also be affected.
Changing the System Name or System Number (H-Series RVUs)
Changing the name of a system running H-series RVUs requires a system power cycle. It might also
require reconfiguration of some of the software running on the NonStop system. To avoid introducing
duplicate system names into Network Routing Tables or into the Domain Name Server, make sure
30 Configuring System Attributes