CSDRECOV

The CSDRECOVsystem initialization parameter specifies whether the CSD is a recoverable file.

CSDRECOV={NONE|ALL|BACKOUTONLY}
The CSDBKUP, CSDRECOV, and CSDFRLOG system initialization parameters interact according to how they are specified, if CSDRLS=NO is specified. If CSDRLS=YES is specified, these parameters are ignored, because the recovery attributes must be specified in the VSAM catalog (using the BWO, LOG, and LOGSTREAMID parameters on DEFINE CLUSTER or ALTER CLUSTER). If CSDRLS=NO is specified but LOG has been specified in the VSAM catalog, the recovery attributes are taken from the VSAM catalog, and CSDBKUP, CSDRECOV, and CSDFRLOG do not need to be specified. If they are specified, however, the rules given in Planning for backup and recovery must still be followed.
This parameter is effective only on a CICS cold or initial start. On a warm or emergency restart, file resource definitions for the CSD are recovered from the global catalog.
NONE
The CSD is not recoverable.
ALL
You want both forward recovery and backout for the CSD. If you code ALL, also specify CSDFRLOG with the journal identification of the journal to be used for forward recovery of the CSD.
Note: If the journal you specify for logstreams associated with CSD recovery (CSDJID, CSDFRLOG, and possibly the log of logs, DFGLGLOG) is a DASD-only log stream, there can be delays when you use the CEDA transaction if the log stream requires a new connection. This delay is because the MVS system logger is formatting the staging data set. Symptoms of the problem are: 
DFHLG0771 07/08/01 03:30:42 IYOT1 A temporary error condition occurred 
during MVS logger operation IXGWRITE for logstream xxxxxx.yyyyyy.zzzzzz.
MVS logger codes: X'00000008', X'00000868'.
If the CSD is the only file using those logstreams, CICS disconnects from the log when you end the CEDA transaction. The next time you run a CEDA transaction, CICS reconnects to the log stream and the MVS system logger allocates and formats a new staging data set.
BACKOUTONLY
CSD recovery is limited to file backout only. If you specify backout for the CSD, CICS uses the system log to record before images for backout purposes.