Full
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Copies a complete file system or directory
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All data is in one place
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Requires large numbers of backup tapes that take a long time to write. Takes
longer to retrieve individual files because the drive has to move sequentially
to the point on the tape where the file is located. You might have to search
multiple tapes.
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Snapshot
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Creates a temporary image of a file system
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System can be in
multiuser mode
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System
performance might degrade while the snapshot is created.
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Incremental
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Copies only those files in the specified file
system that have changed since a previous backup
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Easier to retrieve small changes in file systems
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Finding which incremental tape contains
a file can take time. You might have to go back to last full dump.
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