Solid state drives

1
Solid state drives

• Katie Hintze

2
Hard drive

• A non-volatile storage device that stores
  digitally encoded data
• Introduced in 1956
• Long-term persistent storage

3
Solid State Drive

• An SSD emulates a hard disk drive interface
• Flash Memory
• Two Types
• SLC
• MLC

4
SLC vs. MLC

• SLC

• MLC

• Faster
• Longer Life Span
• Cost more

• Less Expensive
• Smaller Life Span
• Speedy throughput and access times

  SLC NAND flash MLC NAND flash
Random Read 25 µs 50 µs
Erase 2ms per block 2ms per block
Programming 250 µs 900 µs
5
How does an SSD work?
6
Flash Memory
Cell
Block
Page
7
How long will it last?

• Amount of data written a day
• 20 GB
• MLC 100GB

8
The Beauty of an SSD

• Faster
• Quieter
• Less Power Consumption
• Wont loose data

9
Performance
10
Benefits for a Corporation

• Performance
• Power
• Price

11
Final Words
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