IBM DS3500 - Chapter 4. Operating the Storage Subsystem and Storage Enclosure; Performing Health Checks and Inspections

Direct-attached dual-controller connections:
The following illustration shows a direct-attached connection from each controller
to a single HBA in the same host (redundant host connection).
The following illustration shows multiple redundant direct-attached host
connections.
Host system
with single host
adapter
DS3500
Host system
with single host
adapter
Figure 58. Single-controller direct-attached Fibre Channel connection to single HBAs in
multiple hosts
Host system
with dual host
adapters
DS3500
dg1fy403
Figure 59. Dual-controller direct-attached Fibre Channel connection to two HBAs in the same
host (redundant host connection)
Chapter 3. Cabling the storage subsystem and storage enclosure 67