If enabled then only those sessions that are established via a persistent login will be established and no new persistent logins may be created. If disabled then additional persistent and non persistent logins may be established.
Policy path:
System\iSCSI\General iSCSI
Scope:
Machine
Supported on:
At least Windows Vista
Registry settings:
HKLM\Software\Policies\Microsoft\Windows\iSCSI!RestrictAdditionalLogins
Filename:
iSCSI.admx