WebSphere Commerce fix pack/APAR upgrade | Maintenance not requiring planned outages
Maintain and update Web servers
In this chapter we describe how to maintain and update the Web server machines in WebSphere Commerce High Availability configurations. We describe actions that need to be taken in order to perform hardware upgrades, OS upgrades, product upgrades, fix installations, deployment of new static content, and log maintenance.
We group the types of upgrades into types that do not require a server outage or restart, and types that do require an outage. As our Web server configuration only consists of active nodes, the upgrade types that require a server outage are further distinguished according to whether upgraded and not yet upgraded servers can be active at the same time (compatible upgrade) or not (incompatible upgrade).
Each upgrade type requires different preparation and execution processes. Also, some upgrades require a certain order of updating the application server tier and the Web server tier.
xxxx