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

Algorithm 1

Pseudocode of operation strategy.

      ⋯

()    Initial(); //system starts

()    for from 1 to do //: th class based on access time periods

()     chooseRandom();  //: number of users in each time period.

      end for

      ⋯

()     While() //main loop of CVS system

         ⋯

()        If(update) //information updated

()          if(current) //new user asks for current service

()           New VMs/Nodes added;

()           Validity Period recorded;

()         else if(! current) //new user does not ask for current service

()        for from 1 to do

()        (); //classify VMs and nodes based on updated information.

            end for

()     if(request) //task to access

()      if() //task is relevant to th class.

()       for from 1 to do

()        ; //: Nodes of th class.

           end for

          else

()       other nodes = sleep;

          end if

     end if

     ⋯