AS ABAP Architecture & Instances

What are the three installation options for SAP NetWeaver AS?

In a three-level SAP configuration, what sets the limit on horizontal scalability?

What is an MCOD system, and what constraint does it put on the SID and DBSID?

What is SAP NetWeaver Application Server, and what was it called up to Release 6.40?

How many primary application server instances must an SAP system have, and what was this instance formerly called?

In a double-stack system, how are ABAP and Java data stored and connected?

Which three-letter combinations are reserved and cannot be used as a SID?

What does the instance directory name <SID>_DVEBMGS<nr>_<host> tell you, and what is the valid range for the instance number?

In modern SAP systems, how is the old all-in-one central instance split into ASCS and PAS?

In the instance name DVEBMGS, what does each letter stand for?

What is the trade-off of adding more hosts to scale out an SAP landscape?

What are the naming rules for an SAP System ID (SID)?

What is a two-level (two-tier) SAP configuration, and where is it typically used?

What is a standalone gateway instance, and what does it run?

What are the three layers of the SAP three-tier client/server architecture?

What is an SAP instance?