HP Xw9400 Remote Graphics Software 4.2.0 User Guide - Page 110

HP Remote Graphics 4.2.0 User's Guide also destroys memory of window placement on the desktop and requires intervention at restart. Selective Environment Shutdown • Issues - Partial shutdown of an environment only terminates certain applications of interest. It does not implement a full Desktop Session logout. It selectively protects only the most critical applications requiring oversight and control. • Benefits - Preserves the active Desktop Session for connection at a later time. Selectively terminates the applications of interest. Preserves data not governed by an automated shutdown policy. Supports session recovery with an arbitrary connection time. If done in layers (giving some applications more time to live than others), then a gradual "soft landing" shutdown can occur that ultimately results in a full logout. Idle resources over a specific amount of time can be returned to a remote server pool. • Concerns - Potentially more complicated to implement. Can require coordination of multiple agents to handle layered shutdown. Can still result in data loss for specific applications. May require a master semaphore to halt / terminate multiple agents if user reconnects and wants to stop the shutdown process. Wrapping Applications of Interest • Issues - Agents can be launched and supervise only specific applications in a given environment. Tying agents to specific applications is a selective safety net for every user. • Benefits - Application-specific agents can be implemented as plug-ins or support utilities for a given application. In the future, certain software providers may provide custom interfaces for safe shutdown messages from an agent or the operating system. Custom agents can be independently maintained and tied to specific application releases for greater support flexibility. Independent agent design supports unit testing and decouples environmental dependencies. • Concerns - Users need specific recourse to disarm an agent if they reconnect. Applications may not interact well with a dedicated agent (and only shutdown due to a global shutdown request). Dedicated agents could possibly be compromised. Administrator Alerts • Issues - Instead of shutting down an environment, an agent can be designed to alert an administrator or operator to determine the status of the user before taking action. This watchdog approach can further be defined to exploit redundant network connection support to a remote system to allow userdirected shutdowns to occur. • Benefits - System agents are not required to take destructive action - they serve only as alarms and monitors for alternate human intervention. 102