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Compression or not?!

Discussion in 'Hardware' started by Jellyman_4eva, Feb 7, 2006.

  1. Jellyman_4eva

    Jellyman_4eva Byte Poster

    Hi guys,

    Just mucking around with a tape drive I got recently to play with...

    I have become very interested in backups recently for some reason!

    Anyways while most people I have spoke to about their methods use the typical grandfather, father, son technique, I got a lot of mixed response as to whether or not they used compression...

    Just wondered what the general consensus of this is?! Is it good or bad?!
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  2. simongrahamuk
    Honorary Member

    simongrahamuk Hmmmmmmm?

    It depends on how much data you are backing up, how quickly you need to restore it, what the tapes capacity is, etc.

    As a general rule though I personally don't use it because my tapes can handle twice the amount that I backup, and I often have to do a quick restore.

  3. Rostros22

    Rostros22 Kilobyte Poster

    Agree with Simon about the speed of restore, backup data etc.

    The DLT tapes I used to use were 20/40gb and I found that compressing did slow down restore times. I swapped to the 40/80gb tapes without compression and restore times are a damn site quicker.

    If you are ‘playing’ why not do a backup compressed and one with no compression and look at the results?
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  4. eyeball

    eyeball Nibble Poster

    I run the backup system for our data center. We have, on average, 3TB of data in every 24hr period backed-up.

    We write to tapes, the drives we have automatically take care of the compression.

    edit:Although my current projext is looking into virtual backups (backups to an of site tape store via WAN). This is a good idea, don't have to leave the office when it is up and running!!
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