Different Storage Medium

1. Prepared by:
BONOY, Keren T
SALIPEN, Karen E.
BLIS-2A

2. Storage Medium
 the device that actually holds the data
 the physical materials on which data, information and
instructions are kept.
 is any technology (including devices and materials) used to
place, keep, and retrieve data.
 devices that store application and user information
 ‘storage media’ in plural

3. 1. Hard Drive
 comes with the computer and is always inside the computer.
 It stores all the programs that the computer needs to work.
 sizes are generally 3.5" and 2.5" for desktop and laptop computers
 non-volatile memoryhardware device that permanently stores and
retrieves information.
 can be used to store just about any type of data, including pictures,
music, videos, and text documents.
 and use it to store files for the operating system and software that
run on the computer, as well as files created or downloaded to the
computer by a user.

5. 2. Floppy Disk
 considered to be a portable storage medium
 You put it into the computer save your information on it, take
it out, and take it with you wherever you go.
 is a computer disk drive that enables a user to save data to
removable diskettes
 A 5 1/4"floppy disk was capable of storing between 360KB
and 1.2MB of data
 and the 3 1/2" floppy disk was capable of storing between
360KB and 1.44MB of data.

6. due to their extremely limited capacity, computers no longer come
equipped with floppy disk drives. This technology has largely been
replaced with CD-R, DVD-R, and flash drives.

7. 3. Tape
 A magnetically thin coated piece plastic wrapped around
wheels capable of storing data.
 much less expensive than other storage mediums but a much
slower solution that was typically only used for backup.
 tape has mostly been abandoned for faster and more reliable
solutions like disc drives, hard drives, and flash drives.

9. 4. Zip drive or Zip Disk
a hardware data storage device developed by Iomega that
functions like a standard 1.44" floppy drive and diskette
bigger than a floppy diskette and made of a much harder
plastic.
contains a magnetic circular disk that holds information.
its capability to hold up to 100 MB of data or 250 MB of
data on the later models

10. To read and write information on a Zip diskette, it is
placed into a Zip drive that moves the metal cover
exposing the magnetic disk.
became very popular in late 1990s but quickly
became less popular as users needed larger storage
capabilities.
Eventually replaced by CD-R and CD-RW drives and
discs as they became cheaper since they offered
much more storage and compatibility.

12. Technology Advantages Limitations Applications
Removable
storage
(ZIP disks, JAZ
disks, etc.)
 Simplicity
 Portability
 Unlimited
capacity with
multiple disks
 Convenient for
use with single
computer
 Proprietary
media
 Limited
read/write speed
 High cost per
megabyte
 Personal
computing
 Local data
transfer of small
files
 Local backup
 Local archiving

13. 5. Compact Disc (CD)
 is a flat, round, optical storage medium invented by
James Russell.
 the standard CD is capable of holding 72 minutes of
music or 650 MB of data. 80 minute CDs are also
commonly used to store data and are capable of
containing 700 MB of data.

14. a.CD-ROM (Compact Disc-Read Only Memory)
 is an optical disc which contains audio or software data whose
memory is read only.
 CD-ROM Drive or optical drive is the device used to read them.
b.CD-R (CD-Recordable)
 a low-cost solution for backing up software and only costs a few
cents
 can hold up to 650 MB (74 minutes of music) or 700MB (80 minutes
of music).
 still a very popular solution for backing up data, more users are
turning to DVD-R and USB thumb drives to backup and transfer
their data today.

16. 6. DVD(Digital Versatile Disc or Digital Video
Disc)
 disc capable of storing large amounts of data on one
disc the size of a standard Compact Disc.
 widely used for storing and viewing movies and
other data.
 To play DVDs on a computer, you must have a DVD
drive and a software DVD player.

17. Similarities and Difference of DVD and CD
 Physically, a DVD and CD look the same.
 Both discs are the same size and typically have one side with a
label and the other side that the laser reads, unless it is a
double-sided DVD.
 But DVD hold a lot more data than a Compact Disc.

18. CD & DVD
 These types of storage media hold much more information
than a floppy disk
 They are also considered portable storage.
 there are CDs and DVDs that you can only save information
on but you cannot erase the information.
 but there are also those that can both save information on
and erase the information you have saved.

19. Technology Advantages Limitations Applications
Compact disc,
recordable
( CD-R ) or rewritable
( CD-RW ) and DVD
 Low cost per megabyte
 Unlimited capacity with
multiple discs
 Portable
 Widely-supported I/O
interfaces
 Can be formatted for
different data formats
 Long life
 High data density
 Immune to corruption
once data is written (CD-
R and DVD only)
 Limited capacity on
one disc(though
much greater than
diskette)
 Slow to moderate
read/write speed
 Data archiving
 Data distribution
 Data migration
 Localized file sharing
 Offsite storage

20. 7. Blu-ray Disc, BD or BD-ROM
 an optical disc
 can store up to 25 GB single-layer disc and 50 GB on a dual-
layer disc, each disc being the same size as a standard CD.
 a Blu-ray is read with a Blu-ray drive. Drives such as a CD-R
and DVD-R drive that can read and write information to discs
are known as magneto-optic (MO).
*Another advantage that optical media have over the floppy disk
is that it can last up to 7 times longer, due to its improved
durability.

22. 8. USB Flash Drive
 a storage medium that is very easy to carry around and it also holds
more data than a floppy disk.
 often the size of a human thumb and it connects to a computer via
a USB port.
 portable storage device
 Today, flash drives are available in sizes such as 256MB, 512MB,
1GB, 5GB, and 16GB, and are an easy way to transfer and store
information.
 Unlike a standard hard drive, the flash drive has no movable parts,
containing only an integrated circuit memory chip where data is
stored. It usually has plastic casing surrounding the memory chip
inside and has a USB connection that is plugged into the USB port
on a computer.

24. 9. Memory card
 often used to store photos, videos, or other data in electronic devices
 Devices that commonly use a memory card include digital cameras, digital
camcorders, handheld computers, MP3 players, PDAs, cell phones, game
consoles, and printers.
 Types of computer memory cards
 CompactFlash (CF)
 MicroSD
 MMC
 SD Card
 SDHC Card
 SmartMedia Card
 Sony Memory Stick
 xD-Picture Card

25. Sony Memory Stick
a flash memory card used with Sony digital
cameras and other Sony products.

26. Solid-State Drive or Solid-State Disk(SSD)
 is a drive that uses non-volatile memory
as a means of storing and accessing data,
much like computer RAM
 SSD has no moving parts, which gives it
advantages such as accessing stored
information faster, no noise, often more
reliable, and consume less power.

27. Technology Advantages Limitations Applications
Solid-state storage
(USB devices, flash
memory, smart
cards, etc.)
 No mechanical parts
 High read/write
speed
 Small form factor
 Limited storage
capacity
 High cost per I/O
operation
 Swap files
 Local data transfer
 Internet service
providers
 Video processing
 Relational databases
 High-speed data
acquisition

28. Sources:
 http://whatis.techtarget.com/reference/Fast-Guide-to-Storage-
Technologies
 http://www.computerhope.com/jargon/s/stordevi.htm
 http://people.bu.edu/baws/storage%20media.html
 http://uwf.edu/clemley/cgs1570w/notes/concepts-7.htm
 http://www.forensicon.com/resources/articles/what-is-storage-media/
 http://searchstorage.techtarget.com/definition/storage-medium
 http://www.computerhope.com