Skip to content

feat(efc): bls MTA-6233 #5257

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 5 commits into
base: main
Choose a base branch
from
Open
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 4 additions & 0 deletions menu/navigation.json
Original file line number Diff line number Diff line change
Expand Up @@ -300,6 +300,10 @@
{
"label": "Instances footprint calculation",
"slug": "instances-env-footprint"
},
{
"label": "Block Storage footprint calculation",
"slug": "block-storage-env-footprint"
}
],
"label": "Additional Content",
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -41,7 +41,7 @@ The manufacturing impact is prorated based on the server's lifespan and the dura

## Calculation example

For the use of an Elastic Metal server, with a lifespan of 6 years (52 560 hours) and power of 110w, for 100 hours and considering via Boavizta estimates that the impact of the manufacturing of this server is 850 kgCo2e, we make the following calculation:
For the use of an Elastic Metal server, with a lifespan of 6 years (52 560 hours) and power of 110w, for 100 hours and considering via [Boavizta estimates](https://doc.api.boavizta.org/) that the impact of the manufacturing of this server is 850 kgCo2e, we make the following calculation:

```math
ServerManufacturing = (100 / 52560) * 850 = 1,62 kgCO2e
Expand All @@ -52,5 +52,5 @@ Therefore 1,62 kgCO2e is added to the total manufacturing impact of this server.
To calculate the usage, we consider the French energy mix and the datacenter's PUE. In this example, they are O,056kgCo2e/kwh and 1,16, respectively. Which results in:

```math
UsageFootprint = 0,110 x 100 x 0,056 x 1,16 = 0,715 kgCo2e
UsageFootprint = 0,110 * 100 * 0,056 * 1,16 = 0,715 kgCo2e
```
Original file line number Diff line number Diff line change
@@ -0,0 +1,77 @@
---
meta:
title: Block Storage footprint calculation
description: This page explains how Scaleway calculates the environmental footprint of its Block Storage in detail.
content:
h1: Block Storage footprint calculation
paragraph: This page explains how Scaleway calculates the environmental footprint of its Block Storage in detail.
tags: block-storage environmental-footprint impact datacentre
dates:
validation: 2025-07-10
posted: 2025-07-10
categories:
- environmental-footprint
- block-storage
---

This page includes the specificities of the environmental footprint calculation for Block Storage.

## Calculation aspects

The total estimated impact of Block Storage volumes is calculated by integrating the:

- **Manufacturing impact** - Related to the physical servers hosting the storage volumes.
Copy link

@eauvray-github eauvray-github Jul 10, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
- **Manufacturing impact** - Related to the physical servers hosting the storage volumes.
- **Dedicated manufacturing impact** - Related to the physical servers hosting the storage volumes.

- **Usage Impact** - The impact of the tools used to manage the Block Storage offers: control plane, monitoring, internal load balancers, and others.

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
- **Usage Impact** - The impact of the tools used to manage the Block Storage offers: control plane, monitoring, internal load balancers, and others.
- **Related Manufacturing Impact** - The impact of the tools used to manage the Block Storage offers: control plane, monitoring, internal load balancers, and others.

- **Energy usage impact** - The average electricity consumption of storage servers and their energy efficiency.

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
- **Energy usage impact** - The average electricity consumption of storage servers and their energy efficiency.
- **Energy usage impact** - The average electricity consumption of storage servers and their energy efficiency and of the tools used to manage the Block Storage offers.


### Ratio per storage volume

To allocate the impact of a Block Storage volume, we apply the unit resulting from the RCP allocation rule to all calculation steps, the `bls_ratio`:

```
bls_ratio = VOLsto/VolstoPool
```

- **VOLsto** - represents the **reserved volume** per user. In Block Storage, your data is replicated three times on multiple nodes to guarantee availability, so the **VOLsto** is applied with factor of 3 to account for replication.
- **VolstoPool** - represents all the storage for Block Storage volumes on the server that hosts them (around 60%).

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
- **VolstoPool** - represents all the storage for Block Storage volumes on the server that hosts them (around 60%).
- **VolstoPool** - represents the total storage volume reserved for the block storage product.


In the example below we consider a **Volsto** of 600 and a **VolstoPool** of 1000.
Copy link

@eauvray-github eauvray-github Jul 10, 2025

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
In the example below we consider a **Volsto** of 600 and a **VolstoPool** of 1000.
In the example below we consider a **Volsto** of 600 GB and a **VolstoPool** of 1000 GB.


```
bls_ratio = 600/1000 = 0,6
```

### Manufacturing impact

The calculation of the manufacturing impact of Block Storage volumes is based on:

- The fabrication impact of servers that host user storage
- The fabrication impact of servers used by the Scaleway Block Storage team to manage the service - on both the Control and Data planes

The calculation is the same used for [measuring the impact of manufacturing for Bare Metal servers](/environmental-footprint/additional-content/environmental-footprint-calculator/#customer-servers), but for Block Storage we also apply the `bls_ratio` to break the impact down to only the allocated volumes.

#### Calculation example

For the example below, we consider a single server with a lifespan of 6 years (52 560 hours) and power of 110w. We measure the impact of 100 hours and consider through [Boavizta estimates](https://www.boavizta.org/) that the impact of the manufacturing of this server is 850 kgCo2e. Also considering a `bls_ratio` of 0,6, we make the following calculation:

```
VolumeManufacturingImpact = (100 / 52560) * 850 * 0,6 = 0,97 kgCO2e
```

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

we can add a conclusion here : "so the dedicated manufacturing impact for a usage of 600Gb during 100 hours in this exemple is 0,97 kgCo2e

### Usage impact

The calculation of the usage impact of Block Storage volumes is based on:

- The usage of servers that host user storage

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
- The usage of servers that host user storage
- Impact of electricity consumption of servers that host user storage

- The usage of infrastructure and service management servers by the Scaleway Block Storage team to run the Block Storage service. In this case we consider both the Control and Data planes.

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
- The usage of infrastructure and service management servers by the Scaleway Block Storage team to run the Block Storage service. In this case we consider both the Control and Data planes.
- Impact of electricity consumption of infrastructure and service management servers by the Scaleway Block Storage team to run the Block Storage service. In this case we consider both the Control and Data planes.

- The impact of the electrical power dedicated to Block Storage across the infrastructure

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
- The impact of the electrical power dedicated to Block Storage across the infrastructure


To calculate the usage, we consider the French energy mix and the datacenter's PUE.

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Suggested change
To calculate the usage, we consider the French energy mix and the datacenter's PUE.
To calculate the impact of a kwh, we consider the French energy mix and the datacenter's PUE.


In the example below, they are O,065kgCo2e/kwh and 1,16, respectively. Considering an electrical consumption of 600wh, 100 hours of usage, and a `bls_ratio` of 0,6, the total usage impact comes down to:

```math
UsageImpact = (0,600 x 0,065) * 100 * 0,6 = 2,34 kgCo2e
```

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

We can also add a conclusion here


Original file line number Diff line number Diff line change
Expand Up @@ -134,6 +134,7 @@ You can find the calculation specifications for each of the available products i

- [Bare Metal](/environmental-footprint/additional-content/bare-metal-env-footprint)
- [Instances](/environmental-footprint/additional-content/instances-env-footprint)
- [Block Storage](/environmental-footprint/additional-content/block-storage-env-footprint)

### Cross-IT equipment & stock

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -19,22 +19,22 @@ The following tables provide details about the Scaleway products that currently

| **Product Name** | **Environmental Footprint calculator available** |
|----------------------------|---------------------------------|
| Elastic Metal | **Yes** |
| Apple Silicon | **Yes** |
| CPU Instances | **Yes** |
| CPU Instances | **Yes** |
| Block Storage | **Yes** |
| Elastic Metal | **Yes** |

## Planned product integration

| **Product Name** | **Environmental Footprint calculator available** |
|----------------------------|---------------------------------|
| Dedibox | **Integration ongoing** |
| Block Storage | **Integration ongoing** |
| Object Storage | **Integration ongoing** |
| GPU Instances | **Not integrated yet** |
| Kubernetes | **Not integrated yet** |
| Container Registry | **Not integrated yet** |
| Managed Inference | **Not integrated yet** |
| Generative APIs | **Not integrated yet** |
| Object Storage | **Not integrated yet** |
| Managed Databases for PostgreSQL and MySQL | **Not integrated yet** |
| Serverless Functions | **Not integrated yet** |
| Serverless Containers | **Not integrated yet** |
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -36,7 +36,7 @@ The calculation using the elements above can be broken down into:
- Energy mix of the country that provides the electricity.

### Usage Impact
- Resources consumed by the Instance, calculated based on the material specifications of the hypervisors.
- Resources consumed by the Instance, [calculated based on the material specifications of the hypervisors](#electricity-consumption-calculation).

### Indirect Emissions
- Impact related to cross-functional services necessary to guarantee the operation of the Instance, such as network and shared storage.
Expand All @@ -57,7 +57,7 @@ Refer to the table below to understand how the `Resources_Used_VM` is integrated

To obtain an accurate calculation of the Instance's footprint, we multiply the results in each step of the [basis calculation](/environmental-footprint/additional-content/environmental-footprint-calculator/), bar the Cross-IT equipment & stock calculations step, by the `Resources_Used_VM` ratio.

## Cross-IT equipment calculation for Instances
## Electricity consumption calculation

The only part of the calculation that will differ from the basis is the [Customer Servers](/environmental-footprint/additional-content/environmental-footprint-calculator/#customer-servers) section.

Expand Down Expand Up @@ -95,7 +95,7 @@ The allocation of the hypervisor resources for this particular Instance is calcu
We multiply the resource allocation by the Instance's lifespan ratio and the hypervisor's manufacturing impact to obtain the manufacturing impact allocated to the Instance:

```
(100 hours / 52,680 hours) × 100 kgCO2e × 0.425 = 0.080 kgCO2eq
(100 hours / 52,680 hours) * 100 kgCO2e * 0.425 = 0.080 kgCO2eq
```


Loading