2 Solr Instance with One Data Directory

Hi Any one tried, have 2 solr Instance with One Data Directory. I get below Error when i try to point the 2nd solr to the first solr directory. Any help ? org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Index dir '/engine/data/index/' of core 'engine' is already loc

Solr in NAS or Network Shared Drive

Hello, Scenario: Currently we have 2 Solr Servers running in 2 different servers (linux), Is there any way can we make the Core to be located in NAS or Network shared Drive so both the solrs using the same Index. Let me know if any performance issues, our size of Index is appx 1GB. Thanks Rav