Back up Systems

Backing up is the activity of copying files to a second medium (a disk or tape) as a safety measure in case the first medium fails. Even the most reliable computers are able to break down. The reasons for data loss would be because of fire, theft, virus attacks, sabotage, power failure and explosion.

Section 1

At the moment, the school is using tape drives which can be set to back up automatically, at any day and at any time. The school has three drives, which are the S: drive, the T: drive and the U: drive. The S: drive and the U: drive are all being backed up by the tape drives, however the T: drive isn’t. Up to this point, they have been using a grandfather-father-son backup system. However, the data on the network is not being backed up every day.

 The strengths of there current back up system is, they are using the latest backup software called Veritas which uses tape drives and which can be set to back up automatically, at any day and at any time.

The weaknesses of there back-up system are that, the grandfather-father-son backup system, does not backup the data every day. This means, if the network completely crashes on a particular day, the data added to the network on this particular day will all be lost. Also at present, the school has a number of software programs, which is just lying about, and can easily go missing due to theft.

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Section 2

For backing up school networks, there are 4 types of backing up systems. These are disk mirroring, RAID systems, magnetic tape and the grandfather-father-son system.

  1. Disk mirroring is a technique in which data is written to two duplicate disks, at the same time. This is a very good backing up system as if one disk drive fails; the system can switch to the other disk drive without data being lost.
  2. The second backing up system is the RAID system. This stands for redundant array of independent disks. This is a way of ...

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