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Appendix
IND100077-130
SSD Selection Guide
Solid State Disk (SSD) Devices
Last revised : 26 March 2018
SSD's has many benets over conventional hard drives, but when it comes to write
endurance it is important to choose the technology to be used with care. It is of very high
importance to consider several aspects when using an SSD for a particular
application, below the most critical ones, such as:
- Nature of the application, data written to disk during a dened time period (worst case).
- Operating System (OS) and applications settings, optimized for SSD.
- SSD selection, there are several choices of price and performance.
- Expected system life, using worst case calculations.
SSD devices have limited, but predictable, life time. The life time of the SSD device is directly dependent on the
application software.
For SSD of capacity less than 150GB and/or TBW, Total byte Written, less than 100TB
Mandatory:
- Selection / dimensioning of SSD device is required for each unique application.
- Selection / dimensioning of SSD device have to be done of the system house.
- Selection / dimensioning of SSD device shall be done towards data rate, size of footprint is
secondary and in most cases not the dimensioning factor.
Recommended for all SSD device:
- Monitoring of remaining life time.
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