Hello to everyone , in this project i have mentioned the advantages and disadvantages both of them and which ones are better to use today.

2. Herat University
Faculty of Computer Science
Network department
VS
Scientific writing
:Research
Mohibullah ( Afghan )
ID : 22013

3. Content
OIntroduction
OHDD structure
OSSD structure
OSSD Merits & HDD Demerits
OHDD Merits & SSD Demerits
OConclusion
1

4. Introduction
OData storage devices
O Popular in our lives
O Known as secondary storage devices
O2 types of data storage devices
OHard Disk Drive (HDD)
OSolid State Drive (SSD) 2

5. nd
OHDD Structure :
O Magnetic coating on metal platters
O Data are read/written by movements of
magnetic heads.
spindle
Head
platter
3

6. Background
SSD Structure :
 Controller and NAND flash memory
chips
 Data are read/written by read/write
functions
 Use transistors
NAN
D
4
controller
SATA connector

7. HDD
Demerits
SSD
Merits
5

8. Performanc
e Copy 6 GB /s
 Read/write
200-550 MB/s
 Boot S 10-13 Seconds
SSD :
HDD :
 Copy 200 MB /s
 Read/write 50-120 MB/s
 Boot S 30-40 Seconds 6

9. Reliability
7
HDD SSD
3% 0.5%

10. Weight
47
gr 60
gr
64
GB
60 GB
8

11. 6 -7
Watts
2 - 3
Watts
Energy saving ability
9
HDD SSD

12. Heat, Vibration, Noise
10

13. SSD
Demerits
HDD
Merits
11

14. SSD
Price
Difference
12
HDD

15. Capacity
 1TB Max
notebook size
 4TB max
desktops size
SSDs
 2T B Max
notebook size
 10 TB max
desktops size
HDDs
13

16. Conclusion……..
Performance
Reliability
Power consumption
Heat, vibration, noise
In coming years SSD Will
Replace Hard Disk Drives
14

17. Thank you for your
kind attention

18. References
O HDD Problem & solution
O http://www.computerhowtoguide.com/2014/08/hard-disk-
problems-solutions.html
O SSD vs HDD
http://www.storagereview.com/ssd_vs_hdd
O What is Solid State Drive
http://www.pcmag.com/article2/0,2817,2404258,00.asp
O What is Hard Disk drive
http://www.computerweekly.com/feature/Hard-drive-capacity-
emphasized-over-performancefor-future-enterprise-hard-drives