solr.backup.alfresco.cronExpression=0 0 2 * * ?
solr.backup.archive.cronExpression=0 0 4 * * ?
solr.backup.alfresco.remoteBackupLocation=${dir.root}/solrBackup/alfresco
solr.backup.archive.remoteBackupLocation=${dir.root}/solrBackup/archive
solr.backup.alfresco.numberToKeep=3
solr.backup.archive.numberToKeep=3