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Zoning and connection planning in an iSCSI environment
135
Connecting to the Storage
Zoning and connection planning in an iSCSI environment
The user should plan the connectivity of the EMC array to the QLogic
iSCSI HBA based on the following considerations:
Be sure to follow the configuration guidelines that EMC outlines.
Using improper settings can cause erratic behavior. In particular, note
the following:
◆ To achieve load-balancing and multipath failover, storage
systems connected to Linux servers should be configured with
each QLogic iSCSI HBA port on a different subnet.
◆ A single host cannot mix HBAs and NICs to connect to the same
array or different arrays.
◆ A single host cannot attach to a Fibre Array and ISCSI Array at
the same time.
Figure xx shows an example of Linux iSCSI with multiple
NICs/HBAs to multiple subnets.
Figure 6 Linux iSCSI with multiple NICs/HBAs to multiple subnets example