Colin Scott extracted some data about WAN vs datacenter networks reliability:
According to a study by Turner et al. , wide area network links have an
average of 1.2 to 2.7 days of downtime per year. […] The results are
interesting: out of all links types, the average downtime was 0.3 days.
[…] Intuitively this makes sense. WAN links are much more prone to drunken
hunters, bulldozers, wild dogs, ships dropping anchor and the like than
links within a secure datacenter.
I’ve been able to find the two papers online:
- California Fault Lines: Understanding the Causes and Impact of Network Failures - Daniel Turner, Kirill Levchenko, Alex C. Snoeren, Stefan Savage
- Understanding Network Failures in Data Centers: Measurement, Analysis, and Implications - Phillipa Gill, Navendu Jain, Nachiappan Nagappan
Original title and link: WAN vs. Datacenter Link Reliability ( ©myNoSQL)