Comparison of Secondary Storage Devices and Media Theresa Sullivan Angela Volk.

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Presentation transcript:

Comparison of Secondary Storage Devices and Media Theresa Sullivan Angela Volk

8” and 5.25” Floppy Disks The first floppies were 8” disks used for everything The first 5.25” floppy disk had 40 sectors per side, so they could only hold 360 KB The most popular 5.25” floppy had 80 sectors and held 1.2 MB of data Floppy disks were easily damaged

Floppy Disks 3.5” floppy disks were invented in 1980 They were no longer “floppy” because of their hard protective envelope Disk drives come with computer The cost per disk is approximately $.37

Zip Disk Zip disk were produced by Iomega Zip drive cost $150 for 250MB or $80 for 100MB Zip disk cost $15 for 250MB and $10 for 100MB Fire wire is available to connect through USB port. $80 Storage speed: The Fire Wire adapter read speed 2.0 MB/second Zip 250 USB drive 0.9 MB/second

Jaz Disk Single Jaz® 1GB disk cost $100 Single Jaz® 2GB disk cost $125 Single Jaz ® drive cost $275 Transfer rates up to 8MB/sec

Peerless Peerless is the newest invention by Iomega The disk come in 10 and 20 GB The drive and the 20 GB disk cost $325 The drive and the 10 GB disk cost $285

CD Rewritable Drives Three attributes – read, rewrite, and write speed Two types of CD media – CD-R and CD-RW Storage capacity 650 or 700 MB Cost per disk –CD-R about $0.60 –CD-RW about $1.58

CD Rewritable Drives (Cont.) Cost per drive –Internal, 8x write ~$130 (CenDyne, creative labs) –Internal 16x ~$230 (Yamaha) –External 12x ~$200 (Iomega) –External 16x ~$380 (Yamaha)

USB Hard Drives The size of a key chain and made to work in any USB port Data storage of 16, 32 or 64 MB Plug n play Write and read just like a hard drive Write speed 350 kb/s Read speed 700 kb/s

USB Hard Drives (Cont.) Cost –16m $70 –32m $130 –64m $200 Comes in cool colors!

DVD Rewritable Drives DVD = digital versatile disk Recordable media available – DVD+RW, DVD-RW, and DVD-RAM DVD+RW fully compatible with DVD- video and DVD-ROM 4.7 gigabytes of data storage on a single side

DVD Rewritable Drives (Cont.) DVD+RW media costs ~$12 Speculated HP DVD+RW drive costs ~$699 Expected to be available sometime in 2001