lrcat and lrdata file size... What is too big

People,

I run several lib in LR2.7 and I also run a large library and I wan't to know what would be the top recommendation from the point of view of the size of such a size large library or the size of the file.

Currently my biggest lrcat file is 2.03 GB with the lrdata in 17,32 GB file.

Performance is very good with this lib on my workstation... I can't run it on my laptop cause it is too slow for obvious reason, but is there a limit (via set hard or just best practices) in order to limit my files lrcat or lrdata for less then 20 GB, 10 GB, 5 GB?  Those with large lib you can chime in here what you do?  The Adobe ones can you chime on what is the best practice?

Thanks in advance and I tried to find this information through search but I could not.

-Diesel

To 17 GB, I wouldn't mind the size of the file lrdata (excerpts), 10 times that is not uncommon when previews are set high quality. However, 2 GB for the lrcat file suggests that you have a very large number of images (i.e. 100 000 more) or masses of metadata associated with each image. Usually, Lr2.x is having trouble when catalogs become large, but Lr3 should be able to do this fairly easily.

Tags: Photoshop Lightroom

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