We run the "optimize repository index" weekly, and also run the "empty garbage" task more often.
I can tell you that for us it is not a problem to store indexes. We have tons of files in these .index directories, but they are all under 1K ... even for our central proxy repository. Our total capacity is ~ 1 GB.
However, our repo is quite large. However, we have a lot of artifacts. We are currently located on a drive with a capacity of about 300 GB.
Michael
source share