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Solid State Drive (SSD)
Presented By:
Shyam Jos
Contents

Introduction

Form factor

Architecture & Function

SSD vs HDD – Start-Up Test

Technical Comparison of SSD & HDD

Advantages

Disadvantages

SSD Applications

Conclusion
Introduction

In 1995, M-Systems introduced first flash-based solid-state
drives.

A solid-state drive (SSD) is a data storage device that
uses solid state memory to store persistent data and SSDs use
same I/O interfaces developed for hard disk drives.

SSDs do not have any moving mechanical components, which
distinguishes them from traditional magnetic disks such as hard
disk drives (HDDs).

SSDs use NAND-based flash memory or DRAM to store data.
Form Factor

Standard HDD form factors

Box form factors

Bare-board form factors

Ball grid array form factors
Form Factor

Standard HDD form factors – is equal to size of traditional HDD form factors like
3.5", 2.5”
2.55’’ HDD form factor
Form Factor

Box form factors – mainly used by DRAM based SSDs ,as they need external
power supply or battery pack.
Box form factor
Form Factor

Bare-board form factors - Form factor which were more common to memory
modules(RAM)
Bare-board form factor
Form Factor

Ball grid array form factors - small chip package size to fit into Embeded systems
Bare-board form factor
Architecture & Function
Block Diagram
Memory
Flash memory-based SSDs:
use non-volatile NAND flash memory
Ability to retain the data without a constant power supply
lower cost compared to DRAM
Flash memory SSDs are slower than DRAM solutions.
DRAM-based SSDs:
Based on volatile memory such as DRAM
internal battery or an external AC/DC adapter is needed to
hold the data
ultrafast data access
primarily to accelerate applications
Higher cost compared to NAND flash memory
Controller
 The controller is an embedded processor and executes firmware-
level code.
Functions:

Error correction (ECC)

Wear leveling

Bad block mapping

Read scrubbing and read disturb management

Read and write caching

Garbage collection

Encryption
Cache or Buffer:

A flash-based SSD typically uses a small amount of
DRAM as a cache, similar to the cache in hard disk
drives.
Host interface
Serial ATA (SATA)
SAS - Serial attached SCSI (generally found on servers)
PCI Express
Fibre Channel (almost exclusively found on servers)
USB
Parallel ATA (IDE) interface (mostly replaced by SATA)
SSD vs HDD - Start-Up Speed Test
➔This video shows the speed differeence between a solid state drive and standard
hard drive on a Windows 7 PC.
Technical Comparison of SSD & HDD
Solid-state drive Hard disk drive
Random access time
0.1 ms
Random access time
5~10 ms
Read latency time
Very low
Read latency time
high
100MB/s to 500MB/s 50MB/s to 100MB/s.
High Reliability
SSDs have no moving parts to fail
mechanically.
Low Reliability
HDDs have moving parts and are subject
to sudden failure;
small and light in weight. relatively large and heavy
In 2013 SSDs were available in sizes up to
512GB,
In 2013 HDDs of up to 4TB were
available.
power consuption 2 watts 12 watts.
As of 2013 NAND flash SSDs cost about
Rs.31000 for 500GB
As of 2013 HDDs cost about Rs.3200 for
500GB drives
Advantages

High performance – siginificantly faster than a standard
HDD

Faster seek time – upto 60x faster than HDD

Higher reliablity – no moving parts,can withstand 1500Gs
operating shock

Lower power – Lesser power consuption ,cooler operation

Silent operation – ideal for post production enviornments

Lighter weight – perfect for portable devices

Wider operating Temp. - 0c – 70c
Disadvantages

They are more expensive than traditional hard
drives

They currently offer less storage space than
traditional hard drives.

Slower Write Speed on low-end Models(MLC
based types)
SSD Applications
Servers
Desktop computers
Laptops
Ultrabooks
HD Camcorders
Smart Tv
CCTV Digital Video Recorder (DVR)
Set-Top Boxes
Gaming Consoles
Conclusion
Faster Data Access
Less Power Usage
Higher Reliability
Latest high-end laptops and ultrabooks now
comes with SSD
In comming years SSD Will Replace Hard Disk
Drives
Questions ?
Thank You!

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SSD - Solid State Drive PPT by Shyam jos

  • 1. Solid State Drive (SSD) Presented By: Shyam Jos
  • 2. Contents  Introduction  Form factor  Architecture & Function  SSD vs HDD – Start-Up Test  Technical Comparison of SSD & HDD  Advantages  Disadvantages  SSD Applications  Conclusion
  • 3. Introduction  In 1995, M-Systems introduced first flash-based solid-state drives.  A solid-state drive (SSD) is a data storage device that uses solid state memory to store persistent data and SSDs use same I/O interfaces developed for hard disk drives.  SSDs do not have any moving mechanical components, which distinguishes them from traditional magnetic disks such as hard disk drives (HDDs).  SSDs use NAND-based flash memory or DRAM to store data.
  • 4. Form Factor  Standard HDD form factors  Box form factors  Bare-board form factors  Ball grid array form factors
  • 5. Form Factor  Standard HDD form factors – is equal to size of traditional HDD form factors like 3.5", 2.5” 2.55’’ HDD form factor
  • 6. Form Factor  Box form factors – mainly used by DRAM based SSDs ,as they need external power supply or battery pack. Box form factor
  • 7. Form Factor  Bare-board form factors - Form factor which were more common to memory modules(RAM) Bare-board form factor
  • 8. Form Factor  Ball grid array form factors - small chip package size to fit into Embeded systems Bare-board form factor
  • 10. Memory Flash memory-based SSDs: use non-volatile NAND flash memory Ability to retain the data without a constant power supply lower cost compared to DRAM Flash memory SSDs are slower than DRAM solutions. DRAM-based SSDs: Based on volatile memory such as DRAM internal battery or an external AC/DC adapter is needed to hold the data ultrafast data access primarily to accelerate applications Higher cost compared to NAND flash memory
  • 11. Controller  The controller is an embedded processor and executes firmware- level code. Functions:  Error correction (ECC)  Wear leveling  Bad block mapping  Read scrubbing and read disturb management  Read and write caching  Garbage collection  Encryption
  • 12. Cache or Buffer:  A flash-based SSD typically uses a small amount of DRAM as a cache, similar to the cache in hard disk drives.
  • 13. Host interface Serial ATA (SATA) SAS - Serial attached SCSI (generally found on servers) PCI Express Fibre Channel (almost exclusively found on servers) USB Parallel ATA (IDE) interface (mostly replaced by SATA)
  • 14. SSD vs HDD - Start-Up Speed Test ➔This video shows the speed differeence between a solid state drive and standard hard drive on a Windows 7 PC.
  • 15. Technical Comparison of SSD & HDD Solid-state drive Hard disk drive Random access time 0.1 ms Random access time 5~10 ms Read latency time Very low Read latency time high 100MB/s to 500MB/s 50MB/s to 100MB/s. High Reliability SSDs have no moving parts to fail mechanically. Low Reliability HDDs have moving parts and are subject to sudden failure; small and light in weight. relatively large and heavy In 2013 SSDs were available in sizes up to 512GB, In 2013 HDDs of up to 4TB were available. power consuption 2 watts 12 watts. As of 2013 NAND flash SSDs cost about Rs.31000 for 500GB As of 2013 HDDs cost about Rs.3200 for 500GB drives
  • 16. Advantages  High performance – siginificantly faster than a standard HDD  Faster seek time – upto 60x faster than HDD  Higher reliablity – no moving parts,can withstand 1500Gs operating shock  Lower power – Lesser power consuption ,cooler operation  Silent operation – ideal for post production enviornments  Lighter weight – perfect for portable devices  Wider operating Temp. - 0c – 70c
  • 17. Disadvantages  They are more expensive than traditional hard drives  They currently offer less storage space than traditional hard drives.  Slower Write Speed on low-end Models(MLC based types)
  • 18. SSD Applications Servers Desktop computers Laptops Ultrabooks HD Camcorders Smart Tv CCTV Digital Video Recorder (DVR) Set-Top Boxes Gaming Consoles
  • 19. Conclusion Faster Data Access Less Power Usage Higher Reliability Latest high-end laptops and ultrabooks now comes with SSD In comming years SSD Will Replace Hard Disk Drives