A Comprehensive Availability Modeling and Analysis of a Virtualized Servers System Using Stochastic Reward Nets

Table 7

Expected number of transaction loss per year of VMs subsystem.

Main causes	Case (i): with VMM and		Case (ii): without		Case (iii): without
	VM rejuvenation		VM rejuvenation		VMM rejuvenation
VM nonaging failure	5.8	0.35%	5.4	1.62%	5.8	0.38%
VM aging failure	33.8	2.05%	92.2	27.66%	35.7	2.36%
VM rejuvenation	1373.9	83.28%	0	0.00%	1415.9	93.53%
VMM downtime	38.9	2.36%	38.9	11.67%	56.4	3.73%
VMM rejuvenation	196.9	11.94%	196.7	59.02%	0	0.00%
Total	1649.7	100.00%	333.3	100.00%	1513.9	100.00%