|Fisherman Islands, Brisbane|
But, additionally, I have lightroom rename my files. Lightroom renames both the new DNGs as well as the original RAW files that are saved onto another drive.
Renaming works for me because I don't do keywording. (The only exceptions are those occasions where I have a project that covers more than a day or two. In those cases I go ahead and enter a project name as a keyword so that I can pull all the images together if necessary.) If I did keywording as a regular part of my workflow, then I wouldn't do file renaming.
In my renaming convention, a photo taken in Paris on 5 March 2014 would become a DNG named 20140305_Paris_0001.dng; and its original RAW cousin would be saved separately as 20140305_Paris_0001.ARW.
If you want to know more about renaming conventions, Adobe's Julieanne Kost has an item in her blog. It was written about Lightroom 3, but it's just as applicable to 5.
There is always a bit of danger in making changes to any kind of digital file, and particularly in regard to file names. So it's a balancing act between worry (paranoia) on one side of the scales, and convenience on the other. For me the convenience wins out. I've never had a problem with Lightroom's renaming feature. Fingers crossed.
When I first started with Lightroom, I tried out the keywording, but found that I never needed it to find the files that I wanted. Lightroom groups my files into date ordered folders. Then, because of the renaming, I can find whatever want within that folder.
I can see that keywording is essential for professionals who do stock photography; but my volumes are relatively small, so I can usually find anything I want by the combination of the date and the new file name.
If you need to use keywording, I recommend the Luminous Landscape video, Digital Asset Management: Where the #%*! are my pictures?