CA-L-Serv › Define Managed Files › Place Files under the Management of CA-L-Serv

Place Files under the Management of CA-L-Serv

Consider the following before placing a file under CA-L-Serv management:

• Before it can be opened, a VSAM file must be connected to a buffer pool. By default, VSAM assigns each file to a private (NSR) buffer pool. Optionally, you can direct the file server to create shared (LSR) buffer pools and assign your files to these buffer pools.
• Deciding whether to use NSR (non shared) or LSR (locally shared) buffer pools for a given VSAM data set is the function of a number of criteria including, the mix of I/O operations performed by the client application. The application documentation will generally recommend which of its files should be assigned NSR and LSR pools and provide sample definitions.
• You can assign a change log to each file. A change log collects information about updates to a file. See CA-L-Serv Configuration for more information on change logs.
• You can assign each file to a file group. The files in a file group contain data used by a particular client. All of the files in a file group must have the same file group characteristics. The client application documentation will specify which of its files must be part of a file group.