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How does a Solid State Drive (SSD) work differently from a H

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Liew Wai Kit

on 7 April 2014

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Transcript of How does a Solid State Drive (SSD) work differently from a H

What advantages does the SSD deliver over the HDD?
Increased Performance
How does a Solid State Drive (SSD) work differently from a Hard Disk Drive (HDD)?
Read-write Head
Platter
Actuator
Actuator Arm
Once the read-write head arrives on a certain location on a platter, an electromagnet produces a magnetic field, which aligns data-carrying domains in the underlying track.
Each domain can be aligned in one of two possible directions, either 1 or 0.
As these alignments change, they form patterns that correspond to discrete chunks of digital information
NAND Controller
NAND
Printed Circuit Board
Host Interface
Primary Storage Component in SSD:

the non-volatile NAND flash memory is being used because of the lower cost of NAND flash memory, ability to retain data without constant power supply


NAND flash memory stores data in individual memory cells, each cell consists of a single transistor called the Floating Gate Metal-Oxide Surface Field Effect Transistor (FGMOSFET) that can store electrons
2 Types of NAND-Flash:
1) SLC (Single-Level Cell):stores 1 bit, either a 1 or a 0 per cell


2) MLC (Multi-Level Cell): stores 2 bits per cell


Upgrade your computer to one that is running on SSD now!!!
Improved Reliability (MTBF)
Power-Consumption
How does a Hard Disk Drive (HDD) work?
Bibliography/Reference List
Super Talent, . Super Talent Technology, Inc, "SLC vs. MLC: An Analysis of Flash Memory." Accessed April 7, 2014. http://www.supertalent.com/datasheets/SLC_vs_MLC whitepaper.pdf
Rollins, Doug. Storage Review, "Media Management in Solid State Drives: Multistep WRITE Operations." Accessed April 7, 2014. http://www.storagereview.com/media_management_in_solid_state_drives_multistep_write_operations
Harris, William. HowStuffWorks?, "How Solid-state Drives Work." Last modified September 12, 2012. Accessed April 7, 2014. http://computer.howstuffworks.com/solid-state-drive.htm
PC Plus, . TechRadar, "How SSDs work." Last modified June 26, 2011. Accessed April 7, 2014. http://www.techradar.com/news/computing-components/storage/how-ssds-work-969473
Hogan, Cormac. "An Introduction to Flash Technology." Last modified December 6, 2012. Accessed April 7, 2014. http://cormachogan.com/2012/12/06/an-introduction-to-flash-technology/
Turakhia, Bhavin. "Solid State Drives vs Hard disk drives." Bhavin's Blog (blog), January 1, 2009. http://bhavin.directi.com/solid-state-drives-vs-hard-disk-drives/ (accessed April 7, 2014).
Tech Journal, . "How Does Flash Memory Store Data?." Last modified Undated. Accessed April 7, 2014. http://www.tdk.co.jp/techjournal_e/vol01_ssd/contents03.htm

Picture & Photography References
http://archive.benchmarkreviews.com/images/reviews/storage/SSDSC2CT240A4/Intel-Solid-State-Drive-335-Series-Top-View.jpg
http://freegraphicdownload.com/wp-content/uploads/2012/08/hard_drive_disk_(psd)_icon_b.jpg
http://www.ocinside.de/assets/memory/crucial_m4_128gb_ssd_raid0_7.jpg
Thank You for your attention!
-The End-
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