Every system administrator should know how to breakdown a device serial number. This could be very useful when you operate many Cisco devices. SN explanation is pretty easy, please find the rules below.

In this article we will explain what is the datacenter tiering and which one is better, Tier 1 or Tier 4 datacenter. First of all, Tier standard is used to define uptime of a datacenter. This is indeed for measuring datacenter performance, calculating investments and company ROI (return on investment).