The Optimal Resource Allocation rating on the Executive Summary and Detailed View provides a quick indication of the state of the current VM placement and sizing. The Optimal Resource Allocation rating is calculated taking into consideration the current VM host and storage topology. However, the constraints on the VM hosts and storage components are not taken into consideration. Based on the rating you can choose to create optimization scenarios with constraints to arrive at detailed optimization analysis results. The Optimal Resource Allocation Rating shows:
A star rating to indicate the potential Optimal Resource Allocation for each Group.
Scope of optimization for each Group is indicated by the corresponding stars:
- More the number of Green stars, less is the scope for optimizing the resources in the Group.
- More the number of Brown stars, better is the scope for optimizing the resources in the Group.
- If all the stars for a Group are Gray, it indicates that SHO is unable to calculate the optimization opportunity for the Group.
This is different from the detailed and full optimization analysis feature provided by SHO. For information on full optimization analysis, see Optimal VM Placement and Optimal VM Sizing.
The Optimal Resource Allocation Rating method works in two steps:
Utilization percentage before optimization = (Used capacity before optimization / Total available capacity before optimization) * 100
Utilization percentage after optimization = (Used capacity after optimization / Total available capacity after optimization) * 100
The Utilization percentage before and after optimization are placed in one of the following ranges:
Range 1 = 0 percent to 9 percent
Range 2 = 10 percent to 29 percent
Range 3 = 30 percent to 49 percent
Range 4 = 50 percent to 69 percent
Range 5 = 70 percent to 100 percent
The star rating calculation is done as follows:Number of stars = (Range for Utilization percentage after optimization) minus (Range for Utilization percentage before optimization)
Consider the following example:
If the Utilization percentage before optimization = 40 percent (that is, it is in Range 3) and the Utilization percentage after optimization = 95 percent (that is, it is in Range 5)
The Optimal Resource Allocation Rating in number of highlighted stars = Range 5 minus Range 3 = 2 stars