: We optimize less frequently than we used to. Down to twice a month from once a day. : : Without optimizing the search speed stays the same, however the index size increases to 70+ GB. : : Perhaps there is a different way to restrict disk usage.
Consider using the "maxSegments" option on optimizes... https://wiki.apache.org/solr/UpdateXmlMessages#Optional_attributes_for_.22optimize.22 ...that let's you reign in the number of segments, w/o needing to do a full merge down to a single segment. -Hoss
