EMC QLogic Przewodnik Instalacji Pobierz pdf (Strona 135)

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

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EMC QLogic Przewodnik Instalacji Strona 135