IBM DS3500

Direct-attached dual-controller connections: The following illustration shows a
direct-attached SAS connection from each controller to a single HBA in the same
host (redundant host connection).
The following illustration shows multiple redundant direct-attached SAS host
connections. This configuration is also the configuration to use for a dual-node
cluster configuration.
Host system
with single host
adapter
DS3500
Host system
with single host
adapter
Figure 45. Single-controller direct-attached SAS connection to single HBAs in multiple hosts
Host system
with dual host
adapters
DS3500
Figure 46. Dual-controller direct-attached SAS connection to two HBAs in the same host
(redundant host connection)
52 System Storage DS3500 and EXP3500: Installation, User’s, and Maintenance Guide