Network Mgmt |
Problem Mgmt |
Power Train in DC
IT Org Relationship
IT Support Relationship
If I can't draw it, I have difficulty trouble-shooting it, particularly when working with stuff which is effectively invisible. Because most of IT doesn't reflect light ... code executing on a CPU ... packets whizzing along wires ... I rely heavily on pictures for comprehending and managing an IT infrastructure. The diagrams on this page illustrate how I visualize the enterprise network which I help support. In general, I use ACD's Canvas to produce these maps -- Canvas has the data density features I want for this task. When I have a low-density relationship to portray, I tend to employ Microsoft's Visio.
In these diagrams, I focus on transport, starting from a high-level, deepening, and gradually drilling into detail. These three diagrams portray aspects of the deep infrastructure behind an enterprise network (~10000 nodes). They employ the following conventions:
Connectivity: Packets can flow across lines and through boxes. Thus, one can use this map as one would a road map, figuring out how to perambulate from point A to point B. Bandwidth: Indigo means gigabit ethernet, purple means fast ethernet, baby blue means vanilla ethernet. Packet forwarding gear -- switches, routers, firewalls, etc. -- are colored according to the best case forwarding rate of their backplanes. Server OS: Popular end-stations (typically called "servers") are included, and they are colored by operating system brand/version rather than by packet forwarding rate.
I've learned from colleagues: here the invention of my boss and mentor Jim Chorey: Fiber Riser and Backbone diagrams illustrate how to document fiber optic cabling plants.
Also conceptual diagrams, illustrating how a product works rather than any specific instance: Isilon Cluster.
The Account Management diagram illustrates how account information flows from the HR systems into various IT systems.
The EMC Isilon OneFS: An Ops Manager's Introduction diagram provides a one-page overview of the Isilon system, from an infrastructure manager's point of view.
The Mail Routing map illustrates how mail traverses our environment.
The Host Ethernet/IP map illustrates how a complex host connects to the Ethernet/IP network.
The Power Distribution map illustrates, from an IT perspective, how power flows through our physical infrastructure.
The Example Power Train in Data Center map illustrates why a UPS often reports twice as much run-time as it can actually deliver, during a utility outage.
The Voice map documents call-routing and illustrates how services map to servers and locations.
|Last modified: 2017-06-03|