BladeCluster Solution Manual

Before Cabling the ServerNet Switches in a Multi-Zone Topology
1. For each zone of the multi-zone topology, verify that a pair of ACHs (one for each external
fabric) is installed for the BladeCluster. One pair of ACHs supports up to eight nodes per
zone. For installation instructions, see “Advanced Cluster Hubs (ACHs)”.
2. Verify that the ServerNet switches in the BladeSystem that is being added to the BladeCluster
have been configured with quad optical transceivers for connections to the ACHs:
• For a BladeSystem anchor node with one c7000 enclosure:
◦ Verify that the ServerNet switches in group.module.slot locations 100.2.5 and
100.3.7 have been configured with quad optical transceivers in ports 15, 16, 17,
and 18.
• For a BladeSystem anchor node with the high-availability option and two c7000
enclosures:
◦ Verify that the ServerNet switches in group.module.slot locations 100.2.5 (X fabric
switch in the first c7000 enclosure) and 101.3.7 (Y fabric switch in the second c7000
enclosure) have the BladeSystem ServerNet High IO, BladeCluster switches.
NOTE: The high-availability option does not require quad optical tranceivers (in
ports 15–18) of 100.3.5 (Y fabric switch in the first c7000 enclosure) and 101.2.5
(X fabric switch in the second c7000 enclosure).
3. If necessary, have your service provider upgrade the ServerNet switches in the applicable
group.module.slot locations (X fabric) and (Y fabric) of the NonStop BladeSystem from partially-
to fully-populated quad optical transceivers. This procedure can be done one fabric at a time
without requiring either a system load or a system power cycle.
For instructions for installing ServerNet switches for BladeCluster, ask your service provider
to refer to the Replacing ServerNet Switch FRUs in a NonStop BladeSystem service procedure.
Your service provider should not connect any fiber-optic cables to the ACH until prompted by
the OSM Add Node To ServerNet Cluster guided procedure.
4. Ensure that the cables are labeled at both ends, indicating the node, fabric, ServerNet switch
port, and ACH port number.
For additional information about interzone connections, refer to Connections to
BladeCluster/Multi-Zone Solution Topologies (page 63).
Before Cabling the ServerNet Switches in a Multi-Zone Topology 45