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# Check iSCSI session state

Storage hosts are systems that use storage system LUN resources. A logical unit number (LUN) is an identifier that is used for labeling and designating subsystems of physical or virtual storage.

## About this task

This dialog displays iSCSI sessions for a host or host group on storage systems running PowerMaxOS 5978_Q219SR and later. iSCSI sessions on directors (SE directors for storage systems running PowerMaxOS 5978 and OR directors for storage systems running PowerMaxOS 10 (6079)) for a host or host group with iSCSI initiators are displayed along with the session state. The feature is intended to help users perform basic troubleshooting when iSCSI hosts lose connectivity to PowerMax storage systems.