
13-1
13
Disk Space Management
This chapter discusses how BIM-EPIC can help you to maximize and manage your disk space.
Introduction..................................................................................................................13-2
Dataset Fragmentation .............................................................................................13-2
Secondary Allocation...............................................................................................13-3
Truncation................................................................................................................13-4
Converting Uncontrolled Disk Datasets...................................................................13-5
Placing Datasets on Specific Volumes in a Pool......................................................13-6
VTOC Utilities.............................................................................................................13-7
Introduction .............................................................................................................13-7
VTOC Listings (TSIDLVT) ....................................................................................13-8
Online VTOC Displays (TVTO) ...........................................................................13-11
Offload System...........................................................................................................13-15
Introduction ...........................................................................................................13-15
Selecting Datasets To Be Offloaded (TSIDOFD)..................................................13-17
Offloading and Backing Up Datasets (TSIDOFL).................................................13-22
Onloading and Restoring Datasets (TSIDONL) ....................................................13-27
TSIDONL Control Statements...............................................................................13-29
Differences Between TSIDONL Onload and TSIDONL Restore .........................13-32
Consolidating Offload Versions (TSIDOFC) ........................................................13-34
Chapter Contents
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