Half a Mirror Backup

Jason C. Wells jcw at speakeasy.net
Sun Jan 2 19:56:35 UTC 2011

Is using one half of a mirror as a backup a good/bad idea?

I was thinking of rotating drives on a periodic basis as a back up 
method.  You'd get the backup instantly, but rebuilding the mirror with 
the incoming drive would take a little time and leave you vulnerable to 
a small loss of data if a disk failed while the mirror was rebuilding.


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