Installation guide

Managing MTBF Statistics
5-30 Fault Tolerant System Administration (R1004H) HP-UX version 11.00.03
– If the MTBF is less than the threshold, the system takes the device out of
service and places it in the ERROR state.
– If the MTBF is greater than the threshold, the system takes no further
action and continues to monitor the device for errors.
Displaying MTBF Information
You can use the ftsmaint ls hw_path command to display the current MTBF
information for a device. In the following sample output, the last six fields provide
information about fault and MTBF status:
H/W Path : 0/2/3/0/6
Device Name : hdi0
Description : LAN Adapter
Class : hdi
Instance : 0
State : CLAIMED
Status : Online
Modelx : u512
Sub Modelx : 00
Firmware Rev : 1
PCI Vendor ID : 0x1011
PCI Device ID : 0x0009
Fault Count : 0
Fault Code : -
MTBF : Infinity
MTBF Threshold : 1440 Seconds
Weight. Soft Errors : 1
Min. Number Samples : 6
An out-of-service hardware device remains out of service until you clear the MTBF
or change the MTBF threshold.
Clearing the MTBF
You can clear the MTBF for a hardware device. Clearing the MTBF sets the MTBF
to infinity and erases all record of failures. To clear a device’s MTBF, enter
ftsmaint clear hw_path
hw_path is the hardware path of the device for which you want to clear the fault
count.
To clear the fault count for all the hardware paths, enter
ftsmaint clearall