“

”Solid-State Drive (SSD)

-the storage technology of tomorrow.

Seminar Coordinator: Submitted by:Ms. Prabha Naik Subha Bir MathemaAsst.Prof. 1NC10CS074Dept of CSE, NCET

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Abstract

A solid-state drive (SSD) (also known as a solid-state disk or electronic disk, though it contains no actual "disk" of any kind or motors to "drive" the disks) is a data storage device using integrated circuit assemblies as memory to store data persistently.

SSD technology uses electronic interfaces compatible with traditional block input/output (I/O) hard disk drives, thus permitting simple replacement in common applications.

Also, new I/O interfaces like SATA Express are created to keep up with speed advancements in SSD technology.

SSDs have no moving mechanical components.

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Contents Overview of HDD

Overview of SSD (What is this Technology?)

Architecture

How it stores Data?

HDD vs SSD (Comparisons)

Merit and Demerit

Conclusion

References

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The most valuable resources?

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Dataand

Data Storage

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Pre-existing Storage Technology

Cost per byteIncreases-Storage Capacity Decrease

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Non-volatile

Volatile

Overview of HDD

Magnetic Storage Media. Stores data in Magnetic Disks. Read/Write Head for Storing and Retrieval of data. Spindle and Motor to rotate disk. Actuator arm. Fragile Disk makes it prone to damage.

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Overview of HDD (contd.)

40% annual increase in capacity of HDDs. But Only 2% annual increase in random I/O performance. Failure in today’s requirement.

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Overview of SSD

NAND-based Flash Storage Media. Stores data in Multi-Level Cell(MLC) NAND. Performance and Power consumption enhancement. Unlike HDD, SSD has no moving parts.

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Architecture

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Architecture (contd.)

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How it stores Data?

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How it stores Data? (contd.)

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HDD vs. SSD Startup-up time (Windows 7): 22 seconds(SSD), 40 seconds(HDD). Data read-write speed: 510-550 MB/second(SSD), 50-150

MB/second(HDD). Noise: Silent(SSD), Noise from moving parts(HDD). Temperature control: No cooling system(SSD), Require if

temperature exceed it limit(HDD). Excel file open speed: 4 seconds(SSD), 14 seconds(HDD).

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HDD vs. SSD (contd.)

Power Consumption:

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Merit and Demerit

Merit:Faster Data storage and retrieval.Lesser Power Consumption.

Demerit:Write endurance limit.Expensive.Dept. of CSE, NCET

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Conclusion

More power efficient. More Performance efficient. Cost optimization through hybrid combination. Will be basic storage component of any server.

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References http://computer.howstuffworks.com/solid-state-drive.htm http://en.wikipedia.org/wiki/Memory_hierarchy http://computer.howstuffworks.com/flash-memory.htm http://en.wikipedia.org/wiki/Solid-state_drive https://www.usenix.org/legacy/events/usenix08/tech/

full_papers/agrawal/agrawal_html/index.html

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Thank You!

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