StorageTek 6 manual Backup, Primary, Secondary, STandby, Notes, OPTion, Copy, Analyze

Backup

For regularly scheduled backups of HSC control data sets, do not specify the CDS keyword when each CDS copy is not being backed up individually in the same time frame. The reason for not specifying the CDS keyword is that a CDS switch(es) may have taken place.

(Primary)

specifies that the primary control data set is to be copied to the SLSBKUP data set.

(Secondary)

specifies that the secondary control data set is to be copied to the SLSBKUP data set.

(STandby)

specifies that the standby control data set is to be copied to the SLSBKUP data set.

Notes:

1.The CDS parameter specifies the CDS currently in that position. For example, if the primary CDS is disabled and the secondary CDS is running as the primary, specify Primary (not Secondary) to back up the secondary CDS.

2.Using the CDS parameter is especially useful for libraries operating through a remote link, such as channel extenders. Should the link drop and the primary CDS and the secondary CDS complete processing separately, you may bypass the programmatic algorithm that normally determines the control data set to be backed up. If you know which data set (primary or secondary) had the most cartridge processing, then you can select that data set to be processed by the utility.

OPTion

optionally, allows you to select one of three backup options.

(Copy)

if this parameter is specified, NO block analysis is performed. The backup is taken from one of the control data sets. This function is a straight copy to the SLSBKUP data set. /FILE SLSCOPYx statements are not required in the JCL for this option.

OPTion(Copy) is the default and should be used or defaulted to for regularly scheduled backups of the HSC control data set.

OPTion(Copy) determines which copy of the CDS is the most current and copies that CDS copy to the SLSBKUP data set. This dynamic determination of the current primary CDS is disabled if the CDS keyword is specified.

(Analyze)

this option allows detailed analysis of individual blocks to occur. A reserve is held against the control data set until the SLSCOPY data sets are made and the journals are reset. An analysis is made and discrepancies are output to a

Chapter 4. Utility Functions 215

1st ed., 6/30/04 - 312579601