Question:

How do the different Path Selection Algorithms work?

Answer:

When a SnapStream Video folder has more than one drive path that can be used, the Path Selection Algorithm determines how SnapStream decides which drive path to write to. 

Each option available is described below.

• Round Robin: Enterprise TV will save files to each path successively in the order in which they appear, regardless of how much space is available in any path.
• Most Available Managed Space: Enterprise TV will save each file to the path which has the most available storage space, regardless of where previous files were saved.
• Load Balanced Across File Nodes: Enterprise TV will balance the recording load (as distinct from the storage load) across the different storage nodes in the SnapStream cluster. NOTE: If automatic file expiration is used, this option may result in expiration of shows that are not the oldest in the library.
• Expiration Predictive: Enterprise TV will always record to the drive with the oldest expirable media. This option is recommended for clusters with a single storage node, when automatic expiration is in use.
• Expiration Predictive with Node and Drive Session Limits: SnapStream will record to the drive with the oldest expirable media, subject to limits on the number of simultaneous recordings on a particular drive or cluster node. This option is recommended for clusters with multiple storage nodes, when automatic expiration is in use.
• Load Balanced Across Drives: SnapStream will balance the recording load across each drive path in the folder, regardless of the nodes on which the drives are located. NOTE: If automatic file expiration is used, this option may result in expiration of shows that are not the oldest in the library. This option is recommended for use in clusters with multiple nodes, when automatic expiration is NOT in use.
• Most Available Managed Space: Enterprise TV will save each file to the path which has the most available storage space, regardless of where previous files were saved, subject to limits on the number of simultaneous recordings on a particular drive or cluster node.

Additional Notes:

If unsure of which option to select, please contact support@snapstream.com