1.8

permanent (see "Clean-up Service preferences" on page333).
The engines
Merge engine/s. A merge engine merges data with a template using the scripts in the template,
in order to create (Print orEmail) content items.
The number of merge engines is configurable. By default, only one merge engine is used, but
this number can be increased depending on the capacity of the machine that runs the solution
(see "Performance Considerations" on page22).
Weaver engine. The Weaver engine creates Print output from Print content items. It takes the
settings made in Print presets or in the Print Wizard into account.
The number of Weaver engines is configurable as well (see Weaver Engine Scheduling).
Speed units (parallels)
The number of 'speed units' is the maximum number of engines that can work in parallel, which
is why they are also called 'parallels'. The output speed of all speed units together is limited to
a certain number of output items (web pages, emails, or printed pages) per minute.
How many speed units you have and what the maximum total output speed will be is
determined by your licence and any additional Performance Packs you might have.
PrintShopMail Connect always has just one speed unit. Performance Packs only increase the
output speed. But there is one important twist: when generating Print output, the limit imposed
by the number of speed units, only applies to the Weaver engine; when creating Email, the limit
applies to the Merge engines only (the Weaver engine is not involved). So, when generating
Print output, multiple Merge engines can be used. The number of Merge engines is only limited
to one when creating Email output.
Each engine needs at least one speed unit. However, since the number of engines is
configurable, and since small, medium and large jobs may run concurrently, the number of
engines in use may not match the number of available speed units. When there are more speed
units than there are engines in use, the Connect server distributes the speed units and the
maximum output speed to the engines proportionally.
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