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Data Storage and Backup Strategies

Data Storage and Backup Strategies. Joe Cicero Revised by Jeanne Conlon Northeast Wisconsin Technical College. This Presentation Will Cover…. Hard Copy - paper Floppy Zip Disk USB Memory Stick / Flash Memory Backup Partition External / 2 nd Hard Drive – usb / 1394 etc Tape

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Data Storage and Backup Strategies

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  1. Data Storage andBackup Strategies Joe Cicero Revised by Jeanne Conlon Northeast Wisconsin Technical College

  2. This Presentation Will Cover… • Hard Copy - paper • Floppy • Zip Disk • USB Memory Stick / Flash Memory • Backup Partition • External / 2nd Hard Drive – usb / 1394 etc • Tape • CD-R / CD-RW • DVD-R / DVD-RW

  3. Data Storage / Backup Media…Things to consider • Ease of use • Ease of setup • Durability (MTBF – mean time before failure) • The ability of a product to be reused, without significant degradation. • Resilience • Resilience generally means the ability to recover from some shock, or disturbance. • Susceptibility to EMI • Electromagnetic Interference. A naturally occurring phenomena when the electromagnetic field of one device disrupts, impedes or degrades the electromagnetic field of another device by coming into proximity with it. • Capacity • The amount of space inside a container provided for a given amount of product. • Transfer rates • The rate at which data can be transferred, • Cost • Reuse • Portability

  4. Hard Copy - Paper • Pro’s • Ease of use • Easy to print things • Ease of setup • Easy to setup a printer • Durability (MTBF) • Fire / Water but other media will have a problem with this also • Resilience • Dependent upon type of paper and ink • Susceptibility to EMI • No • Con’s • Ease of use • It is not electronically searchable! • Capacity • How much paper do you have? • Transfer rates • Slow, print everything? • Cost • Costly – paper, ink/toner, storage costs! • Reuse • Not really reusable – maybe 1 time (back of sheet) • Portability • Small amounts may be portable but not large boxes of paper backups!

  5. Floppy • Pro’s • Ease of use • Pretty easy to use (if your system has one) • Ease of setup • Requires little or no setup. • Durability (MTBF) • Drive has 30000 power on hours / 3.2 years • Re-usable • Yes, but may cause failure sooner • Portable • Yes, but not if you have large amounts of data • Con’s • Durability (MTBF) • Floppies fail often • Resilience • Only somewhat resilient • Susceptibility to EMI • Yes • Capacity • Very small capacity 1.4 meg • Transfer rates • Slow - 500/300/250 kByte/s • Cost • Would require many floppies, storage costs, etc.

  6. Zip Disks • Pro’s • Ease of use • Fairly easy to use (much like a floppy) • Durability (MTBF) • Disk is 100000 hours / Over 10 years on drive (est.) • Resilience • Only somewhat resilient about the same as a floppy • Capacity • Up to 750 Meg • Transfer rates • Up to 7.5 MB/sec • Reuse • Yes, but may cause failure sooner • Portable • Yes • Con’s • Susceptibility to EMI • Yes • Ease of setup • Setup requires special drivers, programs, and equipment • Cost • $9.00 per disk (for the amount of data could be considered expensive)

  7. USB Memory Stick • Pro’s • Ease of use • Very easy to use – plug and play! • Ease of setup • In most cases requires no setup • Durability (MTBF) • Pretec --> MTBF 500,000 hours (powered on)Simpletech --> MTBF 1M+ hoursSanDisk --> MTBF 3M+ hoursBitMicro --> MTBF 2M+ hours = 228 years • Resilience • Very Resilient • Susceptibility to EMI • No • Capacity • Depends… up to 16 Gig now ($200.00) • Transfer rates • 30 MB/sec • Cost • Depends on size but use a “size to cost” ratio and it is fairly inexpensive • Reuse • Yes • Portable • Yes • Con’s • Small capacity as compared to other media • Expensive for larger capacities or if you want to archive your backups • Small… easily misplaced (put in the washer machine)

  8. Backup Partition • Pro’s • Ease of use • Yes, already in system, just requires creation • Ease of setup • Pretty easy, built in software will allow for this. • Durability (MTBF) • Depends of type of drive ATA, SCSI, SATA. One of western digitals… 5-year warranty and 1.2 million hours MTBF • Resilience • Fairly Resilient • Susceptibility to EMI • Yes, but not as susceptible as a floppy or zip disk • Capacity • Very high now. • Transfer rates • 100MB per second data transfer rate. • Cost • No additional cost involved – it’s a second partition! • Reuse • Yes • Con’s • If device fails – separate partition doesn’t help • Portable • No

  9. External Hard Drive • Pros • Ease of use • As easy as a flash drive • Ease of setup • No special setup required most of the time • Durability (MTBF) • Same as an internal hard drive (5 years) • Resilience • Fairly resilient • Susceptibility to EMI • Yes, but not as much as other media • Capacity • Very high now • Transfer rates • 100MB per second data transfer rate. • Cost • Depends on size and where you buy – can be costly (250 GB HD $99.00) • Reuse • Yes • Portability • Yes • Cons • Can be damaged if dropped or mishandled • Are somewhat vulnerable to EMI • Could be considered expensive if used to archive files

  10. Tape • Pro’s • Ease of use • Not hard but not easy. • Ease of setup • Requires special hardware and software. • Durability (MTBF) • a Travan tape drive has a MTBF of 370000 hours = 45 years • Resilience • Worse than a disk, a tape is very mechanical. • Capacity • Huge - 320GB Compressed Data Capacity • Transfer rates • I’ve seen anywhere from 2 – 40 MBps • Reuse • Yes, but I get worried about using them over and over again. • Portability • Yes • Con’s • Durability (MTBF) • The tapes themselves are not as durable as other media • Susceptibility to EMI • Yes • Transfer rates • I’ve seen anywhere from 2 – 40 MBps • Cost • (3) 20/40 GB Tapes $140.00

  11. CD-R / CD-RW • Pros • Ease of use • Fairly easy – especially now that software is built into Windows • Ease of setup • Most systems come with CDR/RW already installed. • Durability (MTBF) • Plextor 60000hrs MTBF = 6 years • Susceptibility to EMI • No • Capacity • 700 MB • Transfer rates • Mitsumi, Data Transfer Rate, 33.0 MB/s • Cost • When purchased in bulk pennies per! • Reuse RW = yes, R = no • Portability • Yes • Cons • Resilience • Not very Resilient – dropped / scratched / heat warped • Reuse RW = yes, R = no

  12. DVD • Pros • Ease of use • Not much different than CD-R • Ease of setup • Not much different than CD-R • Durability (MTBF) • Plextor DVDMTBF 60 000h = 6 years • Susceptibility to EMI • No • Capacity • Typically 4-8 GB, However Nanotech to increase DVD capacity to 850 GByte • Transfer rates • 8X DVD drive can transfer data at a whopping 11.08MB • Cost • Anywhere from .30 to $1.45 • Reuse • DVD-RW = Yes, DVD-R = No • Portability • Yes • Cons • Resilience • Not very Resilient – dropped / scratched / heat warped • Reuse • DVD-RW = Yes, DVD-R = No

  13. Web Links • http://www.webopedia.com/TERM/R/RAID.html • http://www.sata-io.org/esata.asp • http://www.pc4usa.com/DetailSales.asp?productID=1214&parCat=&Scatn=29&Catn=6 • http://electronics.howstuffworks.com/dvd3.htm • http://www.theeldergeek.com/hard_drives_10.htm

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