Thanks to all and I made Solr work very well on one newer machine. Now I am setting up Solr on an older server with an IDE hard drive.
Unfortunately, populating the index takes FOREVER due to Solr/Lucene/Tomcat calling fsync() a lot after every write. I would like to know how to disable fsync. I am very aware of the risks of not having fsync() and I DO NOT CARE ABOUT THEM AND DO NOT WANT TO BE REMINDED. I just want to know how can I disable fsync() when adding to Solr index. Thanks, guys! Igor