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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.

## Steps

Use this feature to help users perform basic troubleshooting when iSCSI hosts lose connectivity to PowerMax storage systems.