Best storage/backup config for multimedia workstation?

Hello-
Just purchased a Macbook Pro 17" (October 2011) for use as a multimedia design workstation. Will be using for audio/video production (i.e., recording, editing, mixing), as well as graphic design, web design, and related work. Looking to add an external drive (or two) for projects, samples, and backup. Considering the Glyph GT 062E and connecting via eSATA (either one 4TB, partitioned, or two 2TB an an ExpressCard). What configuration is recommended for optimum performance? What about RAID? Mirrored, striped, or spanned? Any other suggestions/recommendations appreciated.
Thanks much.
-j

Thanks for the feedback, Vingo.
I actually ended up going with the Glyph. Found a supplier who was willing to knock $50 off of the lowest price I was able to find and throw in free shipping, so that brought the purchase within budget for me. The Glyph is a bit bulkier than the G Tech, I agree -- I looked at those as well. But, I learned that the Glyph comes with a carrying case, which kind of evens that out for me. Should be arriving soon. Will know then if I made the right choice. :-)
My internal HD is a SATA. Comes standard with the MBP 17".

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            enabled         => true,
            auto_drop       => false,
            comments        => 'execute backup script at 03:30');and then the "master-script", determines which level to use, based on weekday from the OS. The actual job schedule (start date, run interval etc) is set together with the customer IT/IS dept, to avoid congestion on the backup resources.
    I have no overview of the backup status, run times etc, but have made monitoring scripts that will alert me if/when a backup either fails, or runs for too long. This, in addition with scheduled disaster/recovery tests makes me sleep rather well at night.. ;-)
    I realize that there (might be) better ways of doing backup scheduling in your environment, since my requirements are so completely different than yours, but I guess that we all face the same challenges in unifying the environments as much as possible, to minimize the amount of actual work we have to do. :-)
    Good luck!
    //Johan

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