Sustainability metrics are collected for virtual machine, host system, cluster compute resource, vSphere World, and Organization object types.
Metric Names
| Metric Name | Object Type | Description |
|---|---|---|
| Power|Total Energy (Wh) | Virtual Machine | Total energy used. Formula: Total Energy (Wh) = Sum(Power|Energy (Joule))/3600 |
| Power|Total Energy (Wh) | Host System | Total energy used. Formula: Total Energy (Wh) = Sum(Power|Energy (Joule))/3600 |
| Sustainability|CO2 Emission (kg) | Cluster Compute Resource | Carbon dioxide emissions. Calculated as power consumption* CO2 Emission rate Formula: CO2 Emission (kg) = Sum(Host System(Power|Total Energy(Wh)))/1000 * 0.709 |
| Sustainability|CO2 Emission before Virtualization (kg) | Cluster Compute Resource | Carbon dioxide emissions before virtualization, assuming that power consumption per physical server is 100W, reflecting a low end hardware specification. Formula: CO2 Emission before Virtualization (kg) = Summary|Number of Running VMs * 0.1 * 0.709 |
| Sustainability|CO2 Emission by Idle VMs (kg) | Cluster Compute Resource | Total carbon dioxide emission from all idle VMs. Calculated as CO2 emission rate * Power consumed by Idle VMs, where the rate is set at cluster property / 1000. Formula: CO2 Emission by Idle VMs (kg) = Sum(VM(Power|Total Energy (Wh)), If VM(Summary|Reclaimable Idle = 1) * 0.709 OR CO2 Emission by Idle VMs (kg) = Power Wasted by Idle VMs (Wh) * 0.709 |
| Sustainability|Electricity Cost Savings | Cluster Compute Resource | Estimated cost savings by virtualizing workloads. Calculated from the difference between power consumption before virtualization and after virtualization. The electricity cost is defined at the cluster custom property. Formula: Electricity Cost Savings = (Summary|Number of Running VMs * 0.1 - Sum(Host System(Power|Total Energy(Wh)))/1000) * 0.108 OR Daily Electricity Cost Savings = (Summary|Number of Running VMs * 0.1 - Power usage (kWh)) * 0.108 |
| Sustainability|Power usage (kWh) | Cluster Compute Resource | Power usage calculated from all hosts in kWh. Formula: Power usage (kWh) = Sum(Host System(Power|Total Energy(Wh))/1000 |
| Sustainability|Power usage per GHz (Wh) | Cluster Compute Resource | Power usage efficiency. Calculated as power consumption over total GHz. Formula: Power usage per GHz (Wh) = Sum(Host System(Power|Total Energy(Wh))/CPU|Usage (MHz)/1000 |
| Sustainability|Power Wasted by Idle VMs (Wh) | Cluster Compute Resource | Sum of electricity power used by all VMs classified as idle by the system. Formula: Power Wasted by Idle VMs (Wh) = Sum(VM(Power|Total Energy (Wh)), If VM(Summary|Reclaimable Idle = 1) |
| Sustainability|Trees to Offset Idle VMs CO2 Emission | Cluster Compute Resource | Number of standard trees required to compensate CO2 emission of all Idle VMs. Based on 36.4 pound of carbon per tree. Formula: Trees to Offset Idle VMs CO2 Emission = Sum(VM(Power|Total Energy (Wh)), If VM(Summary|Reclaimable Idle = 1)/1000 * 0.709 / 16.511 OR Trees to Offset Idle VMs CO2 Emission = Power Wasted by Idle VMs (Wh)/1000 * 0.709 / 16.511 |
| Sustainability|CO2 Emission (kg) | vSphere World | Total carbon dioxide emissions. Calculated as sum of carbon emission from all clusters. Formula: CO2 Emission (kg) = Sum(Cluster(Sustainability|CO2 Emission (kg)) |
| Sustainability|CO2 Emission before Virtualization (kg) | vSphere World | Total carbon dioxide emissions before virtualization. Calculated as the sum of CO2 emission from all clusters. Formula: CO2 Emission before Virtualization (kg) = Sum(Cluster(Sustainability|CO2 Emission before Virtualization (kg))) |
| Sustainability|CO2 Emission Avoided (t) | vSphere World | Carbon emissions avoided with virtualization. Calculated by difference in values of carbon emissions before and after virtualization and converting value in kg to Tonnes. Formula: CO2 Emission Avoided (t) = (CO2 Emission before Virtualization (kg) - CO2 Emission (kg)) / 1000 |
| Sustainability|Electricity Cost Savings | vSphere World | Total estimated cost savings by virtualizing workloads at vSphere World. Calculated as the sum of Electricity cost savings. Formula: Electricity Cost Savings = Sum(Cluster(Daily Electricity Cost Savings)) |
| Sustainability|Power Savings with Virtualization (%) | vSphere World | Percentage of power savings achieved by virtualization. Calculated by Formula = (Power usage before Virtualization - Power usage after Virtualization)/Power usage before Virtualization *100. Formula: Power Savings with Virtualization (%) =( Power usage Before Virtualization (kWh) - Power usage (kWh) ) / Power usage Before Virtualization (kWh) * 100 |
| Sustainability|Power usage (kWh) | vSphere World | Power usage calculated from all hosts in kWh. Formula: Power usage (kWh) = Sum(Host System(Power|Total Energy(Wh)))/1000 |
| Sustainability|Power usage Before Virtualization (kWh) | vSphere World | Power usage assuming that each low range server consumes 0.1 kWh. Formula: Power usage Before Virtualization (kWh) = Summary|Number of Running VMs * 0.1 |
| Sustainability|Power Wasted by Idle VMs (Wh) | vSphere World | Sum of electricity power used by all VMs classified as idle by the system. Formula: Power Wasted by Idle VMs (Wh) = Sum((VM(Power|Total Energy (Wh)), If VM(Summary|Reclaimable Idle = 1)) |
| Sustainability|Adjusted Score|Workload Efficiency (%) | Organization | Indicates efficiency based on resource wastage in the environment. Formula: Workload Efficiency (%) = 100 - (Wastage/Usage Ratio CPU + Wastage/Usage Ratio Memory + Wastage/Usage Ratio Disk) * 100 / 3 |
| Sustainability|Adjusted Score|Hardware Efficiency (%) | Organization | Indicates efficiency of hardware in the environment, based on the age of the hardware with the assumption that newer hardware is more energy efficient than older hardware. Formula: Hardware Efficiency (%) = ((10 - Average Age of Servers)/ 10 * 30%) +((10 - Average Age of Storage)/ 10 * 30%) + ((10 - Average Age of Network)/ 10 * 20%) + ((10 - Average Age of Desktop)/ 10 * 20%) The Average age of hardware variables in the formula is provided in the Organization Details page. |
| Sustainability|Adjusted Score|Resource Utilization (%) | Organization | Indicates utilization levels of the physical resources in the environment. Formula: Resource Utilization (%) = (Virtualized Server (%) * 44.45%) + (Virtualized Storage (%) * 33.33%) + (Virtualized Network (%) * 22.22%) |
| Sustainability|Adjusted Score|Virtualization (%) | Organization | Indicates the extent of virtualization in the environment. Formula: Virtualization (%) = (Server Virtualization (%) * 0.4) + (Storage Virtualization (%) * 0.3) + (Network Virtualization (%) * 0.2) + (Desktop Virtualization (%) * 0.1) |
| Sustainability|Adjusted Score|Power Source (%) | Organization | Indicates the sources of power being used in the environment. Usage of renewable energy sources leads to lesser carbon emission. Formula: Power Source Efficiency (%) = Sum(Adjusted Scores of each Power Source) Adjusted Scores of Power Source = Power Source Green Factor * Power Source Share in Organization |
| Sustainability|Hardware Utilization|Server (%) | Organization | Indicates server utilization levels. Formula: Virtualized Server (%) = ((Total ESXi Hosts CPU Utilization (GHz) / Total ESXi Hosts CPU Capacity (GHz)) + (Total ESXi Hosts Memory Utilization (TB) / Total ESXi Hosts Memory Capacity (TB))) / 2 |
| Sustainability|Hardware Utilization|Storage (%) | Organization | Indicates storage utilization levels. Formula: Virtualized Storage (%) = (Total datastores utilization + Total RDM) / (Total datastores capacity + Total RDM + Physical Disk Overhead) |
| Sustainability|Green Score (%) | Organization | A score that indicates how efficient or green your data center is. Formula: Green Score (%) = (Workload Efficiency (%) * 22.5%) + (Resource Utilization (%) * 12.5%) + (Virtualization Adoption (%) * 15%) + (Power Source Efficiency (%) * 37.5%) + (Hardware Power Efficiency (%) * 12.5%) |
| Sustainability|Power Usage (kWh) | Organization | Sum of the power usage across all the clusters in the environment. Formula: Power Consumption = Sum ( (Cluster) Sustainability|Power Usage (kWh) ) |
| Sustainability|CO2 Emission (kg) | Organization | Total carbon emissions in the environment based on power consumed. Formula: CO2 Emission = Power Consumption * CO2 Emission Ratio |
| Sustainability|Workload Efficiency|Idle VM Count | Organization | Number of Idle VMs, which are considered idle based on the Reclamation Idleness settings. |
| Sustainability|Workload Efficiency|Orphaned Disk Space (GB) | Organization | The aggregated size of all orphaned disks which are reclaimable based on the Orphaned Disk Reclamation settings. |
| Sustainability|Workload Efficiency|Oversized VM Count | Organization | Number of Oversized VMs, which are considered oversized by the capacity engine recommendation and are not in the Power Off state. |
| Sustainability|Workload Efficiency|Powered Off VM Count | Organization | The number of VMs which have been in the Powered Off state for the last 7 days. The number of days (7) can be configured from the Reclamation Settings. |
| Sustainability|Workload Efficiency|Snapshot Disk Space (GB) | Organization | The aggregated size of all snapshots which are reclaimable based on the Snapshot Reclamation settings. |
