6. DATA SOURCES › 6.2 VTS Component Data Sources › 6.2.4 IBM Hydra Bulk Volume Information Retrieval (BVIR) › 6.2.4.2 Collecting Historical BVIR Records

6.2.4.2 Collecting Historical BVIR Records

In a multi-cluster grid configuration, historical statistics
 for all the clusters can be obtained from any cluster.  You
 only need to run the BVIR facility on one cluster, usually
 the primary cluster.
 
 The BVIR facility uses a standard label tape to both initiate
 the request for the statistics and return the results.  See
 "IBM Virtualization Engine TS7700 Series Bulk Volume
 Information Retrieval Function User's Guide" for the BVIR
 usage procedures.  Also involve your storage administrator in
 automating the retrieval of this data on a daily basis.
 
 The control statement to extract the Historical Statistics is:
 
   HISTORICAL STATISTICS FOR xxx  (xxx is the Julian date) or
   HISTORICAL STATISTICS FOR xxx-xxx (for a Julian date range)
 
 
 Note:  The data is not written to the database on
 synchronized 15-minute intervals.  It is usually written a
 minute or two after the normal 15-minute boundaries.  When
 automating the retrieval of the BVIR data, it is advisable to
 schedule the job after the first interval of the day has
 completed, for example at 12:15 AM.