Our website has about 200K images stored in sitecore database now. It runs more slowly than before. Does this large numbers of images stored in database will slow down the whole site?
If yes, how can I improve our image storage?
Thanks very much, our sitecore version is 6.2.
Have you considered setting up a CDN for your static assets? That would reduce load on your site and should speed it up.
Otherwise you might look at optimising the databases. Have a look at the Sitecore Optimisation Guide http://sdn.sitecore.net/upload/sitecore6/64/cms_tuning_guide_sc60-64-a4.pdf