LOG COPY 2, BSDS 1 field

When installing Db2, you can change the values of the LOG COPY 2, BSDS 1 field. Use this field to specify the storage management properties for the second copy of the active log and the first copy of the BSDS.

When migrating Db2, you cannot change any values in this field.

This field has four columns where you can indicate the volume serial number and the SMS classes for data, management, and storage that are to be used for defining particular data sets or storage groups. The acceptable values and default values for each column are shown in the following table. All fields are optional.

Edit the associated parameter in job DSNTIJUZ, the IRLM start procedure, and the CLIST input member.

Also edit the associated parameter in job DSNTIJUZ, the IRLM start procedure, and the CLIST input member.

Table 1. Acceptable values and defaults for field columns
Column	VOL/SER	DATA CLASS	MGMT CLASS	STOR CLASS
Acceptable values:	Blank or a valid z/OS® volume serial number	Blank or a valid SMS data class name	Blank or a valid SMS management class name	Blank or a valid SMS storage class name
Default:	Blank	Blank	Blank	Blank
Update:	None	None	None	None
DSNZP`xxx`:	None	None	None	None

A blank value in a column directs the CLIST to remove the corresponding storage-management-related parameters from all JCL, AMS, ALLOC, and DDL statements that are used to create data sets and storage groups that are associated with the field. A non-blank value is used by the CLIST to customize the corresponding storage-management-related parameters in all JCL, AMS, ALLOC, and DDL statements that are used to create data sets and storage groups that are associated with the field.

Recommendation: To help performance and recovery, avoid dependency on a single storage device by using an SMS scheme that uses more than one volume serial number.