Owner's Manual

18 Deployment Guide
Cabling the Cluster in Redundant Configuration With Dual SAS 5/E HBAs
Each cluster node attaches to the storage system using two SAS 5/E HBAs and two SAS cables. In this
configuration, there are redundant storage paths from the cluster node to the storage system. If a
component fails in the storage path such as the HBA, the cable, or the storage controller, the multi-path
software automatically reroutes the I/O requests to the alternate path so that the storage array continues
to operate without interruption.
To cable the cluster:
1
Connect cluster node 1 to the storage system.
a Install a SAS cable from the cluster node 1 HBA 1 port 0 to the RAID controller module 0 port
In-0.
b Install a SAS cable from the cluster node 1 HBA 2 port 0 to the RAID controller module 1 port
In-0.
2 Connect cluster node 2 to the storage system.
a Install a SAS cable from the cluster node 2 HBA 1 port 0 to the RAID controller module 0 port
In-1.
b Install a SAS cable from the cluster node 2 HBA 2 port 0 to the RAID controller module 1 port
In-1.
Figure 1-4. Redundant Cluster Configuration With Dual HBAs