HP StorageWorks Enterprise File Services WAN Accelerator 3.0.4 installation and configuration guide (AG424-96004, March 2007)

HP STORAGEWORKS EFS WAN ACCELERATOR INSTALLATION AND CONFIGURATION GUIDE 17
1 - OVERVIEW OF THE HP EFS
WAN A
CCELERATOR
 Simple Network Management Protocol (SNMP) traps are sent.
 The event is logged to system logs (syslog).
 Email notifications are sent (if you have set this option).
When the fault is corrected, new connections that are made receive optimization;
however, connections made during the fault are not. To force all connections to be
optimized, enable the kickoff feature. Generally, connections are short lived and
kickoff is not necessary. For detailed information about enabling the kickoff feature,
see the HP Enterprise File Services WAN Accelerator Management Console User
Guide.
When the HP EFS WAN Accelerator is in bypass mode the traffic passes through
uninterrupted. Traffic that was optimized might be interrupted, depending on the
behavior of the application-layer protocols. When connections are restored, they
succeed, although without optimization.
In an out-of-path deployment, if the HP EFS WAN Accelerator fails, the first
connection from the client fails. After detecting that the HP EFS WAN Accelerator is
not functioning, an HP EFS WAN Accelerator ping channel is setup from the client-
side HP EFS WAN Accelerator to the server-side HP EFS WAN Accelerator.
Subsequent connections are passed through unoptimized. When the HP EFS WAN
Accelerator ping succeeds, processing is restored and subsequent connections are
intercepted and optimized.
For detailed information about the HP EFS WAN Accelerator ping command, see the
HP Enterprise File Services WAN Accelerator Command-Line Interface Reference
Manual.
To upgrade from v2.1
to v3.0
1. Connect to the Management Console on each HP EFS WAN Accelerator.
2. Go to the Setup: Upgrade Software page and choose one of the following options:
 URL. Type the URL that points to software image in the text box.
 Local File. Browse your file system and select the software image.
3. Click Install Upgrade.
NOTE: If you upgrade to v3.0 and clear the data store while running v3.0, you will not be able
to downgrade to a previous version of the software without clearing the data store again.
Upgrading from Version 1.2 to Version 2.1
The following section describes how to upgrade from v1.2 to v2.1. Version 2.1
interoperates with v1.2. These instructions assume you are familiar with the HP EFS
WAN Accelerator, the CLI, and the Management Console.