A WeChat-Based System of Real-Time Monitoring and Alarming for Power Grid Operation Status under Virtual Private Cloud Environment

Table 3

Device parameters.

Item	MTBF (h)	MTTR (h)
Front-end machine	42000	12
SCADA server	42000	12
GSM modem	20000	10
RDS	120000	8
ECS	120000	8
Web API	20000	10