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Handbook of Sustainable Design of Digital Services

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Hosting    ODD#7     ODD#8     ODD#12    

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

Recommendation  Essential

Systems (software)

C People

A Planet

B Prosperity

Difficulty

*

Priority

High

Récurrence

Periodic

Tests

Is the allocation of physical resources relative to virtual machines monitored?

Precisions

Virtualization techniques make it possible to pool the physical resources of a server and a storage space. This abstraction can optimize the use of equipment, but can also lead to underutilization of physical equipment and to a deployment of new equipment before the need is really present. The total environmental footprint of a server and its use is significant.

Use Case

Hosting technical documentation allow to follow up configuration sizing compared to usage

Additional elements

Operational issues related to the project

Posts

Rule for assessing the level of compliance of the criterion

Taux utilisation VM > 60 = 100 ; 60-40 = 50 ; < 40 = 0 / 100

Life cycle

Déploiement

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

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)

Is the use of containers over virtual machines preferred ?

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) ?