Riverbed release minor and major updates to Stingray Traffic Manager on a periodic basis, and you are strongly advised to maintain production instances of Stingray on recent releases for support, performance, stability and security reasons.
Software and Virtual Appliance updates are posted on the Riverbed Support site (Riverbed Support: Software - Stingray Traffic Manager), and updates are announced on the Stingray Blog Feed.
The update process is designed to be straightforward and minimizes disruption, although instantaneous downtime is inevitable. The process depends on the form factor of your Stingray Traffic Manager device:
You can easily verify if you're running the Stingray Software (installed on your Linux/Solaris host) or a Stingray Virtual Appliance (running on VMware, Xen or another platform) by checking the header of an admin server page:
Stingray Software - identifies itself as "Stingray Traffic Manager 4000 VH"
Stingray Virtual Appliance - identifies itself as "Stingray Traffic Manager Virtual Appliance 4000 VH"
The Amazon EC2 instances of Stingray Traffic Manager are provided and supported directly by Riverbed:
For third-party instances of Stingray Traffic Manager, please refer to your cloud provider.
For more detailed information on the Stingray installation and upgrade process, please refer to the relevant Getting Started guide in the Stingray Product Documentation