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RAID does not provide a back up, because all data is replicated in real time. RAID does provide increased uptime and/or increased throughput by correcting for drive failures.
Backups should ideally occur offsite. A CRON job to a remote FTP server is pretty ideal and saves a lot of labour.
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I wake up in the morning more tired than before I slept
I get through cryin' and I'm sadder than before I wept
I get through thinkin' now, and the thoughts have left my head
I get through speakin' and I can't remember, not a word that I said
- Ben Harper, Show Me A Little Shame
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