ServerNet Cluster Manual

Troubleshooting and Replacement Procedures
ServerNet Cluster Manual—520575-003
7-38
Replacing a ServerNet II Switch
8. Direct ServerNet connectivity is automatically restored after an interval of
approximately 50 seconds times the number of nodes in the cluster (25 seconds
for nodes running G06.14 or later). If you do not want to wait, you can manually
force recovery of ServerNet connectivity as follows:
•
On nodes running G06.12 or later RVUs, issue the SCF START SERVERNET
$ZNET command.
•
On nodes running the G06.09 through G06.11 RVUs, issue the SCF STOP
SUBSYS $ZZSCL command followed by the SCF START SUBSYS $ZZSCL
command. These commands will temporarily disrupt connectivity on both
fabrics for any nodes receiving the commands.
9. Repeat Step 1 to confirm that IPC connectivity is up between all nodes on both
fabrics.
10. If connectivity problems continue with the cable, contact your service provider.
Replacing a ServerNet II Switch
Refer to the ServerNet Cluster 6770 Hardware Installation and Support Guide to
prepare for replacement. Then use the guided replacement procedure to replace the
ServerNet II Switch. From a system console attached to any node connected to the
switch, choose Start>Programs>Compaq TSM>TSM Guided Replacement
Tools>Replace Switch Component. Online help is available to assist you in
performing the procedure.
Replacing an AC Transfer Switch
Refer to the ServerNet Cluster 6770 Hardware Installation and Support Guide for the
steps to replace an AC transfer switch.
Replacing a UPS
The UPS is a field-replaceable unit (FRU) and must be replaced by a service provider.
For more information about the UPS, refer to the ServerNet Cluster 6770 Hardware
Installation and Support Guide.
The steps for replacing a UPS are described in the NonStop S-Series Service Provider
Supplement. The service provider must use the guide in addition to the guided
procedure for replacing a switch component in order to replace the UPS.
Note. To promote availability, HP recommends replacing the UPS battery at least every three
years. Because the battery in the UPS is not currently a replaceable unit, you must replace the
UPS to replace the UPS battery. Contact your service provider for information about
replacement.