ServerNet Cluster Manual

Upgrading a ServerNet Cluster
ServerNet Cluster Manual—520575-003
4-24
Upgrading Software Without System Loads to
Obtain G06.12 Functionality
6. Repeat Step 5 for the Y-fabric cluster switch.
7. If upgrading to a new RVU, perform the following optional steps:
a. Perform a system load of G06.12 on the downloader node. For more
information about migrating to G06.12, refer to the following manuals:
•
Interactive Upgrade Guide
•
G06.12 Software Installation and Upgrade Guide
b. When convenient, perform a system load of G06.12 on the remaining nodes
one at a time.
Note. 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 a later G-series RVU). For faster (but manual) recovery of
ServerNet connectivity, use the SCF START SERVERNET
\REMOTE.$ZSNET.FABRIC.* command on all affected nodes after you have verified
by using the TSM Service Application that the X-fabric cluster switch is operational.
The START SERVERNET command works only for nodes running G06.12 or a later
G-series RVU. For nodes running G06.09 through G06.11, you can use the following
commands:
SCF STOP SUBSYS $ZZSCL
SCF START SUBSYS $ZZSCL
Stopping and restarting the ServerNet cluster subsystem destroys and restarts
interprocessor connectivity between the node that receives the commands and all
other nodes over both external fabrics.