A Low Energy Consumption Storage Method for Cloud Video Surveillance Data Based on SLA Classification

Table 1

Configuration number of DataNodes in clusters.

	Cluster	DataNodes
Experimental group	A (0:00–4:00)	4
	B (4:00–8:00)	4
	C (8:00–12:00)	4
	D (12:00–16:00)	4
	E (16:00–20:00)	4
	F (20:00–24:00)	4
Reference group	G	24

Reference group is used to operate the traditional HDFS method and the Stanford method while the experimental group uses the proposed method. Only experimental group is divided.