In normal setups of ZCP, memory is one of the most important hardware components as both MySQL and Zarafa-server cache requested data, so the second time the calendar or inbox is opened all items will be retrieved from the cache.

In an archiving setup with the stubbing feature enabled, the archived data is only accessed when an archived email is really opened. In this case the advantage of caching is limited, as the archived emails are normally not accessed over and over again.

However when the users open the archive store as a secondary mailbox, caching is more important as the user will directly access the archive store.

The advised amount of memory is: