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Handbook of Sustainable Design of Digital Services

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Is the use of containers over virtual machines preferred ?

Advice 

Systems (software)

B People

B Planet

B Prosperity

Difficulty

N/A

Priority

/

Récurrence

/

Tests

Is the comparative study for the service between VM and container available and does it consider the Sustainable IT impacts of each solution?

Precisions

Virtual machines and containers are 2 virtualization techniques. Virtual machine technology uses a lot of duplications (operating system for example) and creates virtual components associated with physical components. The container mode is based on the physical components of the hardware and uses them more natively by limiting the duplications of software components. From a Sustainable IT point of view, containers are often more efficient but the technology is less widely deployed.

Additional elements

Rule for assessing the level of compliance of the criterion

0 / 0

Life cycle

Déploiement

11 other criteria related to the recommendation: Adapt the use of technical equipment to needs

Recommendation Essential

Systems (software)

Is the size of the physical park in line with the number of virtual machines to be run ?

Recommendation

Energy

Are servers / routers turned off when not in use ?

Recommendation

Systems (software)

Is the allocated memory based on actual use ?

Recommendation

Systems (software)

Is the number of CPU cores allocated based on actual use ?

Advice

Systems (software)

Is the technical choice (shared, dedicated, clustered) optimised between the actual need and energy efficiency ?

Recommendation

Systems (software)

Are unused cores disabled ?

Recommendation

Systems (software)

Is the backup system incremental (disk optimization) ?

Advice

Systems (software)

Are Open Source solutions implemented when available ?

Recommendation

Equipment (hardware)

Is high availability designed in a modular fashion ?

Recommendation

Equipment (hardware)

Is provisioning / deprovisionning dynamic depending on the load ?

Recommendation

Equipment (hardware)

Do storage solutions reduce the number of components (for example: high density SSD media) ?