HP ISCSI SR2122 - Manual (Page 15)

Configuring the SR2122 iSCSI Storage Router in a SAN
15 iSCSI SR2122 Storage Router: Getting Started Guide
Figure 4: Standalone SR2122; Dual SANs
Adding a Clustered SR2122 to a SAN
The two SR2122 FC ports on all the clustered SR2122’s are recognized as F-Ports by the FC
switch and as FC HBAs by the Storage Arrays.
After physically connecting the FC port(s), and if zoning is enabled, it is recommended to
create a new zone that includes the FC Port WWPNs and the WWPNs of the storage arrays
that will be serving storage to the SR2122.
Note: Important: Although Multi/Auto Pathing is not supported in a SR2122 clustered
environment,a certain level of failover is available at the SR2122 when configured in a cluster.
Normally, only one SR2122 within the cluster is responsible for the active I/O path between
the iSCSI Initiator and the Storage Array, as an iSCSI Initiator’s I/O cannot be split between
SR2122 Cluster members. If this active Cluster member fails the I/O can switch to another
cluster member. To insure proper failover each cluster member needs one of its FC ports in the
same zone.
Clustered SR2122 Example:
Figure 5: Clustered SR2122