Hardware Storage Devices HTM 304 William Sullivan Victor

Hardware- Storage Devices HTM 304 William Sullivan Victor Cortez Wendi Jardin Jonathan Thompson

Storage Purpose: l Without storage a computer can only function as a digital signal processing device (e. g. calculator, media player).

History of Storage Devices l l l l 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 l Hard Disk- a non-volatile storage device which stores digitally encoded data on rapidly rotating platters with magnetic surfaces. l 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) l 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. l 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 l l l 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 l l l 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 l l l 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 l l l 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 l l l 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 l Verbatim l Memorex l Maxell Price/Storage Capacity/Speed l 2. 0 USB Flash Drives l San Disk l PNY Attaché l Sony l Memorex l Lexar $3. 49 - $9. 99 (packs of 10 - 50) l 1. 44 MB, 500 Kbps Price/Storage Capacity/Speed l $14. 99 - $199. 99 l 512 MB – 16 GB, 480 Mbps

Popular Brands (cont’d) Optical Disks l Sony l Memorex l Verbatim l Maxell l Fuji Film l TDK Price/Speed/Storage Capacity l CD-R/RW: $8. 49 - $32. 99 l l l DVD-R/RW: $9. 99 - $63. 99 l l l 16 x; 4 x (RW) 4. 7 GB, 120 min Double Layer DVD-R: $19. 49 - $99. 99 l l l 40 x – 52 x; 4 x (RW) 700 MB, 80 min 8 x 8. 5 GB, 240 min Blu-Ray: $20. 99/each l l 2 x 25 GB, 120 min (HD), 780 min (standard)

Comparisons CD-Rs Source: Best. Buy. com

Popular Brands (cont’d) Hard Disk Drives l Western Digital l Seagate l Hitachi l Maxtor Storage Capacity/Price/Speed l Internal: 80 GB – 750 GB l l l $83. 99 - $282. 99 5400 RPM – 10, 000 RPM External: 12 GB – 1 TB l l $51. 99 - $449. 99 5400 RPM – 7200 RPM

Comparisons Internal Hard Drives Source: Best. Buy. com

Comparisons External Hard Drives Source: Best. Buy. com

Comparisons External Hard Drives (cont’d) Source: Best. Buy. com

Comparisons External Hard Drives (cont’d) Source: Best. Buy. 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) l l l 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 Quick. Books 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) l l l 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) l. Cindy L. Thompson l. Client Service Specialists/Receptionists l. Euro American l. Propagators l. LLC l. Age: 48 l. Years with company: 5. 5

“Man! A flash drive is so convenient for my party music. ” Home User (entertainment) l l l Kyle Mc. Clellan Co. BA Major CSUSM Cougar Age: 20 Years at CSUSM: 2. 5

Cost-effective Recommendations Specifications l Situation l l Capacity l l i. e. how big or small Brand l l i. e. emergency (backup) i. e. brand name or not (generic) Other options l i. e. firewall (security) Places to Purchase l Best Buy l Circuit City l Wal-mart l Fry’s l e-Bay l Other online sites l CDW Inc

Check this out! Special Report: Hard disk exxxposed

Q&A

Sources l l l http: //gadgets. for. se/history-of-data-storage/ Music: Scatman John “Scatman” Wikipedia. org Best. Buy. com/Frys. com MIS Textbook