SSDs and Flash MemoryJoeri Swiggers & Stijn Bruers
What are SSDs?
Solid State Disk : No moving parts
Originally used with volatile / RAM memory If there was no power, data would be lost
Modern SSDs use Flash memory Even without power, data is saved
What is Flash Memory?
An old method to store data without power Bubble memory Had significant aging problems Performance got worse over time
Early 2000’s : Flash memory became more reliable
Now : All SSDs carry flash memory chips SSD Flash Memory ≠ USB Flash Memory !!!
What is Flash Memory?
Pricing issues are diminishing Becoming more reliable than traditional hard drives
Maximum capacity is increasing Physical size is kept to a minimum
MYTH : Data cannot be removed from SSD
USB Thumb Drives
Use flash memory chips, like SSD
Quality is lower than SSD Flash Memory Less reliable, slower speeds, ...
Still very useful
Hybrid Hard Drives (SSHD)
Magnetic drives with SSD / Flash memory storage
Small amount of SSD storage
Work as a “cache”
How does SSHD compare to SSD?
Combines elements of both SSD and HDD :
SSD HDDReliability Storage capacity
Speed PricingLongevity
Noise
CONCLUSION
References
Danielmeissler.com – The Difference Between SSD and Flash Hard Drives
PCMag – SSD vs. HDD: What’s the difference?
University of Klagenfurt’s website – Bubble memory
Wikipedia – USB flash drives
PCWorld – Hybrid hard drives: How they work and why they matter
FlashStorageBlog.com – 3 Interesting Facts About Flash Memory & Storage
Are there any questions?
Thank you for your attention!
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