SSD

SSD are Disk objects of type SSD.

Characteristics

Name	Unit	Default value	Description	Example
units	None	1	SSD quantity	2
usage	None	See Usage	See usage	..
type	None	SSD	"SSD"	SSD
capacity	Go	1000	Capacity of a ssd disk	500
density	cm2/Go	48.5	cm2 per Go on a ssd wafer	48.5
manufacturer	None	None	Name of the CPU manufacturer	Samsung
model	None	None	..	..

Complete

The following variables can be completed

density

if manufacturer is given, density can be retrieved from a fuzzy matching on our ssd repository.

Manufacture impact

For one SSD the manufacture impact is:

\[ \text{SSD}_\text{manufacture}^\text{criteria} = (\text{SSD}_{\text{capacity}} / \text{SSD}_{\text{density}}) * \text{SSD}_\text{manufacture_die}^\text{criteria} + \text{SSD}_\text{manufacture_base}^\text{criteria} \]

with:

Constant	Units	Value
\(\text{SSD}_\text{manufacture_die}^\text{gwp}\)	kgCO2eq/cm2	2.20
\(\text{SSD}_\text{manufacture_die}^\text{adp}\)	kgSbeq/cm2	6.30E-05
\(\text{SSD}_\text{manufacture_die}^\text{pe}\)	MJ/cm2	27.30
\(\text{SSD}_\text{manufacture_base}^\text{gwp}\)	kgCO2eq	6.34
\(\text{SSD}_\text{manufacture_base}^\text{adp}\)	kgSbeq	5.63E-04
\(\text{SSD}_\text{manufacture_base}^\text{pe}\)	MJ	76.90

Note: If there are more than 1 SDD we multiply \(\text{SSD}_\text{manufacture}^\text{criteria}\) by the number of SSD given in units.

Usage impact

Only power consumption is implemented.