Hardware- Storage Devices
HTM304
William Sullivan
Victor Cortez
Wendi Jardin
Jonathan Thompson
Storage
Purpose:
 Without storage a computer can only function
as a digital signal processing device (e.g.
calculator, media player).
History of Storage Devices








1956- Hard Disk
1971- 8’’ Floppy Disk
1980- CD (compact disk)
1994- Compact Flash, Zip Drive
1995- DVD
1998- Memory stick
2001- USB key
2004- HD-DVD, Holographic
Store 1 DVD on…
Types of Storage Devices

Hard Disk- a non-volatile storage device which
stores digitally encoded data on rapidly rotating
platters with magnetic surfaces.

Optimal Disks- a storage device that uses tiny
pits etched on the surface of a circular disc to
store information, and reads this information by
illuminating the surface with a laser diode and
observing the reflection. Optical disc storage is
non-volatile and sequential access.
(Ex. CD, DVD)
Types of Storage Devices (cont)

USB flash drive- a NAND-type flash memory storage
device integrated with a USB (universal serial bus)
interface. Flash memory stores information in an array
of floating gate transistors, called "cells". Each cell
stores one bit of information.

Holographic- Holographic memory is a technique that
can store information at high density inside crystals or
photopolymers. The advantage of this type of data
storage is that the volume of the recording media is
used instead of just the surface.
Parameters that Affect
Computer Performance
• CPU and Memory
• Main Memory
• Magnetic Disk
• Optical Disk
CPU and Memory



Performance Factors: CPU Speed,
Cache memory, Data bus speed,
Data bus width.
Beneficial for: Fast processing of
data once the data reside in the
main memory.
Example Applications: Repetitive
calculation of formulas and
manipulation of large picture
images.
Main Memory



Performance Factors:
Size and Speed
Beneficial for: Holding
multiple programs at one
time, processing very large
amounts of data.
Example Applications:
Processing large files in
several programs and
websites and gaming.
Magnetic Disk



Performance Factors: Size,
channel type and speed,
rotational speed, seek time.
Beneficial for: Storing many large
programs and files, swapping
files in and out of memory.
Example Applications: store
detailed maps and large data
downloads from organizational
servers.
Optical disk-CD



Performance Factors: Up
to 700 MB
Beneficial for: Reading
CDs, backup files.
Example Applications:
Install new programs, play
and record music, backup
data.
Optical disk-DVD



Performance Factors: Up
to 4.7 GB
Beneficial for: Process
both DVDs and CDs,
backup files.
Application Examples:
Install new programs, play
and record music and
video, backup data.
BRANDS
Storage Capacity
Popular Brands
Floppy Disks
 Verbatim
 Memorex
 Maxell
Price/Storage Capacity/Speed

2.0 USB Flash Drives
 San Disk
 PNY Attaché
 Sony
 Memorex
 Lexar
$3.49 - $9.99 (packs of 10 - 50)

1.44MB, 500Kbps
Price/Storage Capacity/Speed

$14.99 - $199.99

512MB – 16GB, 480Mbps
Popular Brands (cont’d)
Optical Disks
 Sony
 Memorex
 Verbatim
 Maxell
 Fuji Film
 TDK
Price/Speed/Storage Capacity
 CD-R/RW: $8.49 - $32.99



DVD-R/RW: $9.99 - $63.99



16x; 4x (RW)
4.7GB, 120min
Double Layer DVD-R: $19.49 - $99.99



40x – 52x; 4x (RW)
700MB, 80min
8x
8.5GB, 240min
Blu-Ray: $20.99/each


2x
25GB, 120min (HD), 780min (standard)
Comparisons
CD-Rs
Source: BestBuy.com
Popular Brands (cont’d)
Hard Disk Drives
 Western Digital
 Seagate
 Hitachi
 Maxtor
Storage Capacity/Price/Speed
 Internal: 80GB – 750GB



$83.99 - $282.99
5400 RPM – 10,000 RPM
External: 12GB – 1TB


$51.99 - $449.99
5400 RPM – 7200 RPM
Comparisons
Internal Hard Drives
Source: BestBuy.com
Comparisons
External Hard Drives
Source: BestBuy.com
Comparisons
External Hard Drives
(cont’d)
Source: BestBuy.com
Comparisons
External Hard Drives
(cont’d)
Source: BestBuy.com
Previously Covered:
History
Function
Major Parameters
Major Brands
Now…
Who should buy and
where should they
buy?
“I save all of my essays on my flash drive and
keep it on my keychain so when I am at school,
work, or wherever I have access to my
schoolwork.”
Student
(document use)





Jenny L. Bigpond
Liberal Studies Major
CSUSM Cougar
Age: 22
Years at CSUSM: 3.5
“I analyze data for the pool service industry. This is
easy to do with QuickBooks software installed on my
hard disk. I can print reports based on pricing and
inventory as well as actual costs versus profit. I also
backup all of my invoices on a flash drive.”
Company Manager
(data analysis use)





Tonya L. Bigpond
Vice President
Bigpond Enterprises
INC.
Age: 47
Years with company: 4
“Our customer and catalog lists are stored on
hard disks. Our new catalog that comes out every
year is put on the hard disk. Our products and
pictures are also stored on the hard disks.”
Secretary
(documentation use)
Cindy
L. Thompson
Client Service
Specialists/Receptionists
Euro American
Propagators
LLC
Age: 48
Years with company: 5.5
“Man! A flash drive is so
convenient for my party music.”
Home User
(entertainment)





Kyle McClellan
CoBA Major
CSUSM Cougar
Age: 20
Years at CSUSM: 2.5
Cost-effective Recommendations
Specifications
 Situation


Capacity


i.e. how big or small
Brand


i.e. emergency (backup)
i.e. brand name or not
(generic)
Other options

i.e. firewall (security)
Places to Purchase
 Best Buy
 Circuit City
 Wal-mart
 Fry’s
 e-Bay
 Other online sites
 CDW Inc
Special Report:
Hard disk exxxposed
Q&A
Sources





http://gadgets.for.se/history-of-data-storage/
Music: Scatman John “Scatman”
Wikipedia.org
BestBuy.com/Frys.com
MIS Textbook