Live server - converting to raid 5?

I have a live server that is getting pretty close to using up all of it's drive space. It is currently running 2 SCSI drives, on a mylex raid card in a mirrored config (raid 1 or 0, I forget which one means mirrored).

Has anyone had any experience with, or know if it is even a possibility to convert the raid array to raid 5 "on the fly". I know this would mean adding an additional drive, and that is not a problem. What IS a problem is if this would mean extensive downtime for my clients (over 200 sites on the server Live server - converting to raid 5? ).

Does anyone know if this is possible? How much downtime should I expect?

Thanks!
Live server - converting to raid 5?

 

 

 

 

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