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112 Appendix
IND100077-130
SSD Selection Guide
Solid State Disk (SSD) Devices
Last revised : November 2020
SSD's has many benefits over conventional hard drives where operational performance
in marine environment is the reason for Hatteland Technology to recommend SSD's.
Historically, the limited write endurance and storage capability vs cost been the main
limitations for SSD devices.
SSD based at modern technology and with correct dimensioning/usage, will in most of
the use cases overcome those short comings.
SSD selected and installed by Hatteland Technology have been through an extensive
test program which guarantee that SSD performance complies to defined parameters in
the specifications and that the SSD will operate without issues in delivered system con -
figuration, hardware and software combinations, and is suited for its operational (marine)
environments .
Selection guide (3d-party SSD):
- Use SSD that is designed for the actual use case, follow recommendations from OS/SW/HW
providers.
- Use SSD that is designed and tested vs Enterprise 24/7 operational profile.
- Use SSD where byte written (PBW/TBW) is defined from Enterprise profile; JEDEC218/219 or from
full/true random profile.
- Use SSD which can handle unplanned/unscheduled loss of power
SSD devices have limited, but predictable, life time. The life time of the SSD device is directly dependent on the
application software.