I have my photos on an External Hard Drive (1TB). I just bought 2 SSD External HDs (500GB each) and wanted to make a back up onto these, so that I can take one with me when I travel, as it is a much lighter drive. Not sure how to do this without disrupting my catalog on the original drive. Do I have to copy the photos onto the new SSD and make 2 separate catalogs, one for each SSD drive? Or do I physically copy the photos into each drive and keep the catalog on the laptop HD?
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