DS4100 single-controller storage server configurations: This section provides
the following examples of DS4100 single-controller storage server host fibre
channel configurations.
v Single server configuration with one adapter, as shown in Figure 29
v Single server configuration with two adapters, as shown in Figure 30 on page 41
v Dual server configuration with one adapter on each server, as shown in Figure 31
on page 41
v Dual-server, single-SAN fabric configuration with one adapter on each server, as
shown in Figure 32 on page 42
v Dual-server, single-SAN fabric configuration with two adapters on each server, as

shown in Figure 33 on page 42

Host system
with two host
adapters
Host system
with two host
adapters
Switch Switch
Host system
with two host
adapters
Host system
with two host
adapters
Switch
Switch
f10ug044
DS4100
Figure 28. Example of a two-cluster configuration (base storage server)
f11ug001
Host
Server
DS4100 Single
Controller
Figure 29. Example of a single server configuration with one adapter (single-controller
storage server)
40 IBM TotalStorage DS4100 Storage Server: Installation, User’s, and Maintenance Guide