Data Storage and Backup Strategies

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Data Storage andBackup Strategies

• Joe Cicero
• Revised by Jeanne Conlon
• Northeast Wisconsin Technical College

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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

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Data Storage / Backup MediaThings 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

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Hard Copy - Paper

• Pros
• 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
• Cons
• Ease of use
• It is not electronically searchable!
• Capacity
• How much paper do you have?
• Transfer rates
• Slow, print everything?

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Floppy

• Pros
• 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
• Cons
• Durability (MTBF)
• Floppies fail often
• Resilience
• Only somewhat resilient
• Susceptibility to EMI
• Yes
• Capacity

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Zip Disks

• Pros
• 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
• Cons
• Susceptibility to EMI
• Yes
• Ease of setup

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USB Memory Stick

• Pros
• Ease of use
• Very easy to use plug and play!
• Ease of setup
• In most cases requires no setup
• Durability (MTBF)
• Pretec --gt MTBF 500,000 hours (powered
  on)Simpletech --gt MTBF 1M hoursSanDisk --gt
  MTBF 3M hoursBitMicro --gt 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

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Backup Partition

• Pros
• 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 its a second
  partition!
• Reuse
• Yes

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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

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Tape

• Pros
• 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
• Ive seen anywhere from 2 40 MBps
• Reuse
• Yes, but I get worried about using them over and
  over again.
• Portability
• Yes
• Cons
• Durability (MTBF)

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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

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DVD

• Pros
• Ease of use
• Not much different than CD-R
• Ease of setup
• Not much different than CD-R
• Durability (MTBF)
• Plextor DVD MTBF 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

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Web Links

• http//www.webopedia.com/TERM/R/RAID.html
• http//www.sata-io.org/esata.asp
• http//www.pc4usa.com/DetailSales.asp?productID12
  14parCatScatn29Catn6
• http//electronics.howstuffworks.com/dvd3.htm
• http//www.theeldergeek.com/hard_drives_10.htm