A Two-Tier Energy-Aware Resource Management for Virtualized Cloud Computing System

Table 1

Details of servers.

Name	Dell PowerEdge R710	Dell PowerEdge R720
CPUs	Two Intel Xeon processors; E5645 @2.4 GHz	Two Intel Xeon processors; E5-2620 @2.1 GHz
Frequency steps (GHz)	1.60, 1.73, 1.86, 2.00, 2.13, 2.26, 2.39, 2.40	1.20, 1.30, 1.40, 1.50, 1.60, 1.70, 1.80, 1.90, 2.00, 2.10
Memory	24 G 1333 Mhz DDR3	64 G ECC DDR3
Disk	Two 10 k SAS, 250 GB	One 10 k SAS, 300 GB
Operation system	CentOS 6.5	CentOS 6.5