StorageTek Host Software Component 6 User Manual

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

• The old and new control data sets must be on volumes that are configured properly 

for real reserve/release to all hosts running HSC. (Refer to the IBM documentation 
for your environment.)

• If it is necessary to copy the control data set to another minidisk, use the BACKup 

and RESTore utilities to ensure proper reset of database flags. 

During a reconfiguration, volume information is copied from the old CDS to the new 
CDS. If the same LSMid exists on both the old and new CDS, volume information is 
copied for all panels as long as the panel type did not change.

 1. LSM types must be the same, or no volumes in those LSMs are copied. 4410 and 

9310 LSMs are considered to be the same LSM type.

 2. An example of a ‘‘changed’’ panel type is if a drive panel replaces a cell panel. In  

this case, volume information on that panel is not copied.

When panels are frozen by the SET FREEZE utility, the resulting panel status in the new  
CDS is determined by these conditions: 

• If the panel types match on the old and new CDS, the panel is frozen only if the panel 

on the old CDS is frozen. 

• If the panel types do not match on the old and new CDS, the panel is frozen only if  

the panel on the new CDS is frozen. 

The Reconfiguration utility is executed as an SCP job to transfer data from the old control 
data sets to the new control data sets. 

Note: Reconfiguration executes under the Base service level only. 

Before executing the Reconfiguration utility, it is highly recommended that you run the 
Volume Report utility, which specifies the ACS and/or ACS and LSM options. 

The volume report detects any errant and/or selected volume plus cell-allocated, but 
empty, conditions. If any of these conditions exist, it is recommended that each condition 
be cleared before running the Reconfiguration utility. If not cleared, the condition is 
copied to the newly created control data set. 

An exception exists for selected volumes that are copied and marked unselected in the new 
control data set. If duplicate VOLSERs exist, run the AUDIt utility before running the 
Reconfiguration utility. 

The net result of executing the Reconfiguration utility (process) is the creation of new 
control data sets that must be used for HSC execution from this point.