| GreenIT | V2 | V3 | V4 |
|---|---|---|---|
| 70 | 87 | 89 |
| Life cycle | Tiers | Responsible |
|---|---|---|
| 4. Production | Datacenter | System Administrator |
| Priority | Implementation difficulty | Ecological impact |
|---|---|---|
| 3 | 3 | 3 |
| Saved resources |
|---|
| Processor / RAM |
Virtualization allows creating and executing virtual representations of a computer on one or more physical machines. The virtualization software allocates resources between different virtual environments based on their needs.
As a result, virtualization allows:
- hardware savings through mutualisation
- optimal resources use (RAM, CPU, disk)
This method reduces the amount of electronic waste (WEEE) and energy use compared to multiple physical servers.
Containerization is another level of virtualization: virtual machines can host a container orchestration service, enabling execution of multiple applications in an isolated way on the same operating system.
Use virtualization tools such as VMware, Xen, KVM, etc.
Use containerization tools such as Docker, Kubernetes, etc.
It is more efficient to mutualise resources by using a hypervisor than using four dedicated servers for four projects, each running at maximum capacity of 20%. This way, a single physical machine can provide the same services as four dedicated servers.
| The number of ... | is equal to or less than |
|---|---|
| applications not using virtualization to mutualize resources | 0 |