Dell NetWorker 19.9 Administration Guide

Best Practices and Recommendations for using Index Hostname

The following are the best practices and recommendations for using index hostname:

• When a client is configured with index host, save -c cannot be used as the save command for the same client.
• Parallel Save Stream (DPSS) cannot be enabled for a client which has an index host configured. Since PSS attribute is global for client resource, even if a different instance of this same client participates in different group, PSS cannot be enabled.
• Any change in the index host of a client results in the subsequent backups being promoted to level Full. This is because, backups are already indexed under older index hostname. When new backups start with different index hostname, it looks for indexes under new index hostname. If it does not find any indexes then it reverts the backup to level full.
• The number of nsr consolidate process that runs for single namespace client is limited to the NetWorker client's parallelism value. The default value of NetWorker server client's parallelism is 12. Use the default value unless NetWorker server has enough resources to perform concurrent consolidated operations. It can be increased up to 64 based on clients and save sets. The multiple concurrent nsr processes operate on client file index that is based on save sets that are processed from respective client's data. Therefore, more concurrent nsr processes can consume more IOPS and compute resources on NetWorker server.
• Configure all clients that participates in a distributed file system into a single NetWorker protection group.