Advances, Systems and Applications
Table 6 Notation summary
From: A novel coordinated resource provisioning approach for cooperative cloud market
P | Number of reservation contracts offered by cloud market |
T/t | Total number of stages of collected demand vector |
h | Duration of each stages, ideally in hour basis |
VmDt | VM instance Demand vector for a stage ‘t’ |
C(f) | Upfront or one time reservation cost of reserved instance |
C(r) | Resource usage cost for reserved VM instances per hour |
C(o) | Resource usage cost for on-demand VM instances per hour |
vm(r) | Number of reserved VM instances |
vmt(r) | Number of reserved VM instances for a stage ‘t’ |
vm(u) | Total number of usage VM instances |
vm(o) | Number of on-demand VM instances |
vm(D) | Cloud user request demand vector for a duration ‘T’ |
vm(d) | Cloud user request demand vector for a duration ‘t’ |
Totc | Total cost corresponding to demand vector ‘Vm(D)’ |
vmDsort | Sorted cloud user demand vector for a duration ‘T’ |
TotDc | Total cost of demand vector |
TotDjsort | Total cost of sorted demand vector |
Tc | Total cost of usage resources of all cloud users |
R-cost | Reserve VM instance cost for entire contract period |
U-cost | Usage VM instance cost per slot |
O-cost | Ondemand VM instance cost per slot |