StorageTek Host Software Component 6.0, Руководство системного программиста

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266 VM/HSC 6.0 System Programmer’s Guide
1st ed., 6/30/04 - 312579601
Reconfiguration Utility
The Reconfiguration utility is used as part of a four-stage process to create a new copy of
the control data set when library hardware configurations change, such as the addition of
drives or LSMs, but when information regarding the location of cartridges in the library
must be retained from the original control data set.
Note: This utility requires a 2.1-level CDS.
The four stages include:
• performing a LIBGEN to create the new hardware configuration
• executing the SLICREAT procedure to format the new CDS that will hold the
information transferred from the old CDS during the execution of the
Reconfiguration utility
• executing the Reconfiguration utility to transfer current cartridge information from
the old CDS to the new CDS taking into account the hardware configuration changes
made
• possibly executing a partial audit that may be necessary to make final corrections to
the CDS contents for panels that may have changed as a result of hardware
configurations, such as the addition of drive panels.
The Reconfiguration utility executes as an SCP job with the HSC at the base service level
and runs as a special invocation of the HSC. The Reconfiguration utility uses as input the
CDSDEF control statement (points to the old CDS) as its information source and the
RECDEF control statement (points to the newly formatted CDS) as the target where the
updated information is stored.
Reasons for Running the Reconfiguration Utility
The Reconfiguration utility minimizes the amount of time that the library is unavailable
for your use due to library modifications. Some typical examples of library modifications
are:
• an LSM panel is reconfigured (possibly by adding a drive panel to the LSM)
• an LSM is added to the existing configuration. Usually, this causes a change to the
configuration of some of the existing LSMs since PTP panels replace panels that are
currently full wall panels.
• an ACS is added to the library
• an LSM, or an entire ACS, is removed from the library.
Reconfiguration