A small Introduction on Solid Stae Drive

1. SOLID STATE
DRIVE
DONE BY
S BALAJI
15EUCS017
II-CSE A

2. What is meant by SSD?
• A solid-state drive (SSD, also known as a solid-state disk
is a solid-state storage device
• Uses integrated circuit assemblies as memory to store
data persistently.

3. A Sample SSD

4. History
• 1950-magnetic core memory and charged
capacitor read only memory.
• 1980-implemented in semiconductor
materials.
• 1989-Sandisk's SSD capacity of 20MB
costs 2000rs.
• 2009- Micron Technology announced an
SSD using a 6 gigabits per
second (Gbit/s) SATA interface

5. Architecture
• The key components of an SSD are the
controller and the memory to store the
data.

6. Memory
• The primary memory component in an
SSD was traditionally DRAM volatile
memory, but since 2009 it is more
commonly NAND flash non-volatile
memory

7. Controller
• Every SSD includes a controller that
incorporates the electronics that bridge the
NAND memory components to the host
computer.

8. Functions Of Controller
• Read and write caching,
• Encryption,
• Error detection and correction via Error-
correcting code (ECC) and
• Garbage collection

9. Comparision with other Technologies

10. Comparision with other Technologies
MEMORY CARDS SDD
Access time is slower compared to
SDD.
Access time is speeder.
smaller than SSD's and are designed
for digital cameras.
They were primarily designed for
computers.

11. Applications
• Telecommunication corporations,
• Streaming media and
• Video editing firms.

12. Wear Levelling
• If a particular block was programmed and
erased repeatedly without writing to any
other blocks, that block would wear out
before all the other blocks — thereby
prematurely ending the life of the SSD.
• SSD controllers use a technique called
wear leveling to distribute writes as evenly
as possible across all the flash blocks in
the SSD.

13. Data Recovery And Secure Deletion
• Solid state drives have set new challenges
for data recovery companies.
• The way of storing data is non-linear
• And much more complex than that of hard
disk drives.

14. THANK YOU