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Silly? One USB drive can hold several backups, each new backup rewrites the oldest one. On the other hand, you need 30 DVDs/month (assuming daily backups, and
by cabirum 15y ago
Silly? One USB drive can hold several backups, each new backup rewrites the oldest one.
On the other hand, you need 30 DVDs/month (assuming daily backups, and a backup takes ~1 dvd), time to write them, and a space to store them. Also, it is way less reliable.
- oconnore 15y agoThat scheme would be far less reliable. For one, if you corrupt a file and don't notice right away, you lose it forever (which sort of defeats the purpose of backups, doesn't it?). Also, you wouldn't actually do a full backup every day. You would perform data journaling with periodic snapshots. For example, with daily backups with a change rate of 5%, and monthly snapshots, you need only 2.5x your data size per month ignoring the minimal transaction overhead.