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4 Data Security


This lesson is broke down into several sections:


I classify Item 1.0 Backup methods into four different types: (We are discussing backups of your working data not what is done with imaging lesson 3)

  1. Local backups are preformed on the (local) computer you are using and may be in a “native”  or proprietary format. They should be taken at a regular interval (M-T-W-Th-F) and kept for the duration of the interval. (“native” to be explained later) If you have a 1GB drive in your computer you need to add a 2GB internal or external drive for local backups (more later)
  2. Archival backups should always be preformed to two external drives attached to your computer or on a network drive that you control. Archives may be in a “native”  or proprietary format. They should be taken at a regular interval weekly and monthly and  and kept for the duration of  interval such as keep weekly for four weeks and monthly for three months when they become quarterly which are kept indefinitely. Archive drives should be rotated monthly with the current one taken off site at rotations end. The frequency you use for rotation depends on your tolerance policy for loss in case of a disaster.
  3. Nonstop or Time Slice backups make a backup at a fixed interval like 5 minutes of the current data you are working on for tight revision control. Every time you release a program a snapshot is made if that program is on your list to be backed up. Some Time Slice take snapshots of the program data in question when the file is still being used.
  4. Internet backup services are great if you are a “Road Warrior” and want to limit what you take with you. Be aware you loose privacy of your data if you use these services and as a result should use some type of data security.

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