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I'm wondering how I can back up a mail server on IBM 1U with 2x2TB disk. No more slot is left. Should I do RAID or is there any other better idea?

In case the mail server has been used to store mail up to 1 TB. The other HD is used for cloud file sharing. Can we do something to back up from here without interupting everyday use much?

I desperately need your advice and thank you in advance for any help.

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When doing a backup you never ever backup towards the same machine. Your backup should be towards another machine, preferably in another geographical location than where your current server is located.

Also refer to: Why is RAID not a backup?

and some general advice on how you should do backups here http://blog.serverfault.com/category/backup/

If your hardware can't cope with it anymore, invest money in new hardware or in an external remote backup service.

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  • Thank you so much. I'm rather a newbie. The link you gave is very useful.
    – Ken
    Mar 8, 2013 at 13:51

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