Research Article

Data Placement for Privacy-Aware Applications over Big Data in Hybrid Clouds

Table 1

Key terms and descriptions for cost, access time, and energy analysis in hybrid cloud.

NotationDescription

All the available VM instances
mth VM in
The dataset need to be placed
ā€‰ dataset in D
The binary variable to judge whether is placed on
The data access time for extracting the
The tasks need to be performed,
nth task in T
The binary variable to judge whether is place on
The time cost for the task to extract the dataset
The binary variable to judge whether is on public cloud
The total access time of public datasets
The access time for obtaining the datasets in private cloud
The baseline power consumed by the active PMs
The power consumed by the active VMs is calculated by
The power consumed by the VMs in the idle mode
The power consumed by the switches due to data access
The total power consumption to perform the tasks