Hi,
Yes indeed, it is similar to a serverfarm.
I found this definition of a pool in BigIP:
A BIG-IP pool is a set of devices grouped together to receive traffic according to a load-balancing method.
This is the definition of a serverfarm in ACE:
Server farms are groups of networked real servers that contain the same content and that typically reside in the same physical location in a data center.
HTH,
Dario