Hard Disk Drive versus Solid State Drive

Outline
O Introduction
O Literature Review
O Method & Materials
O Results

O Conclusion

Background
O Data storage devices
O Popular in our lives
O Known as secondary storage devices

O 2 types of data storage devices
O Hard Disk Drive (HDD)
O Solid State Drive (SSD)

Background

O HDD:
O IBM 1956
O Magnetic coating on metal platters
O Data are read/written by movements of

magnetic heads.

Background

O SSD:
O 1950s
O Controller and NAND flash memory chips
O Data are read/written by read/write

functions

Objective and Audience
O Objective
O Provide the statistical figures
O Compare differences between HDD and

SSD
O Manufacturers
O identify which drives will be more suitable
O educate their end users.

Literature Review
O Highlight differences between drives
O Primary advantages of both drives

O Research gap in past researches

Differences
O Power consumption:
O SSD uses 5% of system power
O HDD uses 10% of system power
O Power usage of SSD is half of a HDD in

both state.

Differences
O Price of SSD is significantly higher:
O Highly complex process.
O Sophisticated flash memory

O Heat dissipation of SSD is lower:
O Uses lesser power than HDD

Primary Advantages
O Primary advantages of SSD:
O Faster performance
O Booting up of PC
O Launching of applications

O Primary advantages of HDD:
O Higher maximum storage capacity
O Up to 4 Terabytes

Primary Advantages
O Reasons why HDD lost in performance:
O More time spent waiting for platters to

access data
O Reasons why SSD lost in storage

capacity:
O Limitations in size of transistors and parts

in SSD

Research Gap
O Little has shown:
O Temperature fluctuation at different

intervals
O Statistical figures of boot up and read/write

speed with a fair environment

Method
O The aim of the experiments were to obtain

data to evaluate the performance of each
of the drives.
O Three experiments:
O Boot-up speed
O Read & Write speed
O Operating temperature

Materials
O 13-inch Apple MacBook Pro x2
O 256GB SSD
O 500GB HDD
O Stopwatch

Materials (Cont’d)
O Blackmagic Disk Speed

Test
O A software used to assess

storage drives’ read and
write performance.
O It obtains the drives’
performance by comparing
the time taken to write and
read large data to and from
the drive.

Materials (Cont’d)
O iStat Menus
O A software that allow
users to monitor
detailed information of
the computer in real
time.
O It makes use of the
sensors built inside of
the computer to obtain
the hardware
information.

Procedures
1. Boot-up speed

Power up both
MacBook and
start the
stopwatch

Note the time
taken for each of
them to complete
the process

Repeat process for another 4 times

Finally, obtain the average from the results gathered.

Procedures (Cont’d)
2. Read & Write speed
Start
Blackmagi
c Speed
Test
Repeat process
for another 3
times

Note down
the results

Finally, obtain the
average from the results
gathered.

Allow it to
run for 5
minutes

Procedures (Cont’d)
3. Operating temperature

Run iStat
Menus

Note down the
operating
temperature of
the drive

Repeat process for another 3 times every 15 minutes

Finally, obtain the average from all the results.

Results

Second(s)

Boot-up time
50
45
40
35
30
25
20
15
10
5
0

SSD
HDD

EXP 1

EXP 2

EXP 3

EXP 4

Results (Cont’d)
Reading speed
600

MB/s

500
400
SSD

300

HDD

200
100
0
EXP 1

EXP 2

EXP 3

EXP 4

Results (Cont’d)

MB/s

Writing speed
450
400
350
300
250
200
150
100
50
0

SSD
HDD

EXP 1

EXP 2

EXP 3

EXP 4

Results (Cont’d)

Temperature( °C )

Operating temperature
40
35
30
25
20
15
10
5
0

SSD
HDD

EXP 1

EXP 2

EXP 3

EXP 4

Final results
Result

SSD

HDD

Boot-up

17.2sec

42.2sec

Read

443MB/sec

95MB/sec

Write

366MB/sec

94MB/sec

Temperature

33°C

34°C

Why SSD is better than HDD?
Reason: The difference in technology.

HD
D

SS
D

Conclusion……..
1. Limitation
2. Recommendation
3. Application

2. Heat dissipation…

HDD/SSD

Recommendation…
1. Uses a range of disk..
• Brand
• Capacity

2. New SSD,HDD & System

Thank you for your kind attention
&
All the best for your final exams!


References
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http://i1-news.softpedia-static.com/images/news2/iStat-Menus-3-Released-for-Mac-OS-XDownload-Here-2.jpg
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http://www.macobserver.com/imgs/category_images/20120910_mbpbatterylife4a.jpg
http://static.myce.com/images_posts/2009/10/Table-SSD-Cost-Per-GB.png
http://blog.laptopmag.com/wpress/wp-content/uploads/2012/03/geeks-geek-app-open.jpg
http://hdr.in.ua/wp-content/uploads/2013/06/hdd_11.jpg
http://lignup.com/computer-tips/81-meaning-of-ssd.html
http://searchsolidstatestorage.techtarget.com/video/Storage-Decisions-TechTalk-DennisMartin-on-SSD-trends
http://www.computerweekly.com/feature/Hard-drive-capacity-emphasized-overperformancefor-future-enterprise-hard-drives

Q&A
O What is secondary storage device?
O Why our results are different from result
O

O
O
O
O

on Internet?
Should I use SSD or HDD?
Future trend of SSD and HDD?
Why we use Mac OS?
Maximum capacity of SSD and HDD ?
Maximum speed of SSD and HDD

Q&A
O What is secondary storage device?
O external memory and auxiliary storage
O Hold information even the power is off

O Why our results are different from result

on Internet?
O The use period of laptop, HDD and SSD
O The different version
O Environment factor: number of

application, …

Q&A
O Should I use SSD or HDD?
O If:
O storage capacity, up to 4TB
O Don’t want to spend much money
O Don’t care too much about how fast a computer

boots up or opens programs
O If:
O You are willing to pay for faster performance
O Don’t mind limited storage capacity or can work

around that.

Q&A
O Future trend of SSD and HDD?
O SSD:
O Increase its capacity
O Decrease its price

O HDD:
O Increase it performance or improve its desity

Q&A
O Why we use Mac OS?
O As we only find 2 identical laptop using

Mac OS
O If we can find 2 identical laptop using
Window, then we also can use Window
O The results also depend on the operating
system

Q&A
O Maximum capacity of SSD and HDD ?
O SSD: 2 TB
O HDD: 4TB

O Maximum speed of SSD and HDD
O SSD: SATA 6 GB/s
O HDD: 10’000 rpm (200 MB/s)

Hard Disk Drive versus Solid State Drive

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Editor's Notes