All,
I'm a network engineer working with one of my clients on a network readiness assessment. It is not SAP specific, but we know that SAP will be deployed in the next 12 months so it is an important consideration while doing the assessment.
We already know that the client's WAN infrastructure is insufficient even before SAP is deployed (many sites on their MPLS cloud hitting 95%+ utilization) but what I'm looking for is a real-world example of the bandwidth required. This customer's WAN sites are all connected to an MPLS cloud using T1 lines (1.544Mbit) along with their corporate HQ (200Mbit Ethernet).
I have seen the C = X * N * D * 0.25 formula and have included it in the assessment. The document I was able to find suggested that X=4.6, but I'm not sure how current that number is.
I have also read on an unofficial document that 96kbps is the minimum acceptable bandwidth per user. I also understand that scaling will depend on a lot of factors such as number of concurrent users and which particular SAP applications are being used. That said, I was wondering if anyone could give me some idea of what I should be recommending the customer update their WAN links to. Assuming switching to an ethernet handoff I would expect 10Mbit to be the minimum, but if anyone has some real world-based suggestions that would help greatly.
Finally, I should also mention that I've seen a number of links to documents that go over scaling but unfortunately I do not have access to them. Specifically:
Note 1109624 - What is the minimum amount of bandwidth per Everest user?
Note 62418 - Network Load of SAPGUI Frontend Communication
Note 164102 - Network load between application server and front end
Note 679918 - The front-end network time
Note 578118 - Long response times on the SAP GUI
Any help or suggestions would be greatly appreciated.