ppt english-ss ds-and-flash-memory
TRANSCRIPT
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SSDs and Flash MemoryJoeri Swiggers & Stijn Bruers
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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
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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 !!!
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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
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USB Thumb Drives
Use flash memory chips, like SSD
Quality is lower than SSD Flash Memory Less reliable, slower speeds, ...
Still very useful
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Hybrid Hard Drives (SSHD)
Magnetic drives with SSD / Flash memory storage
Small amount of SSD storage
Work as a “cache”
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How does SSHD compare to SSD?
Combines elements of both SSD and HDD :
SSD HDDReliability Storage capacity
Speed PricingLongevity
Noise
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CONCLUSION
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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
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Are there any questions?
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Thank you for your attention!