Backup data to 2 Harddrives

cartur25

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May 1, 2014
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Over time I've accumulated larger and larger drives. Currently I have a 3 TB external drive that I'm consolidating everything onto.

I have Time Machine back up my laptop but I don't have a backup of my 3TB external.

I'm wondering if I can somehow couple 2+ old external drives to backup my 3TB drive?

Example: a 1TB & 2 TB external drive combine together with software to backup my 3TB external drive.
 
Solution
Most likely you will need to split the backup into parts to get to the two seperate drives. I dont know of anything that will merge the two externals into one