Servernet Ii San Topologies - Compaq ServerNet ServerNet II Installation Manual

1-12 Compaq ServerNet II PCI Adapter and Switch Installation Guide

ServerNet II SAN Topologies

This section shows a progression of ServerNet II SAN topologies representing switchless and
switched configurations, single- and dual-fabrics, and topologies with and without fault
tolerance. These examples are for illustration only.
NOTE: Configuration worksheets are provided in Appendix M for your use in configuring your topology.
Figure 1-6. Example 1: Switchless Single-Fabric, 2-Node SAN
Figure 1-6 shows a two-node SAN topology connecting two ServerNet II PCI Adapters and
containing no ServerNet II Switch. In this example, you connect the ports on the ServerNet II
Adapters with a single SAN cable (X-to-X or Y-to-Y). This produces a single-port SAN
topology.
Figure 1-7. Example 2: Switchless, Dual-Fabric, Two-Node SAN
Figure 1-7 shows a 2-node SAN topology connecting two ServerNet II PCI Adapters and
containing no ServerNet II Switch. In this example, you connect the ports on the ServerNet II
Adapters with two SAN cables (X-to-X and Y-to-Y). This produces a dual-port topology on the
Adapters. If one port fails, the other port works as a backup to continue SAN operations.