The Allocate function allows allocation of a number of different QSAM and VSAM data set types:
- PS
- DA
- PDS
- LIBRARY
- KSDS
- RRDS
- ESDS
- LDS
- GDG
Basic Options

- Data Set: the name of the new data set to allocate
- Data Set Type: the type of the new data set to allocate
- Allocate like: (optional) the name of the data set to base all properties on for allocation of the new data set. Any fields specified later on in the wizard will override these properties; for convenience, the properties of the data set specified here will be loaded into the subsequent relevant fields of the wizard.
Allocation Parameters (QSAM only)
This page only applies to QSAM data sets and won't be shown for VSAM data sets.

- Volume: specify the volume to allocate on
- Space type: specify the space type to use
- Device type: specify the device type to use: the hardware unit type esoteric, or a unit address. Common options are provided as defaults.
- Directory blocks: specify the amount of directory blocks
- Record Format: specify the record format by choosing length, misc and printing control options using the appropriate radio boxes, or specify the record format in advanced (text) form.
- Record length: specify the record length (also known as record size)
- Block size: specify the block size
VSAM Options (VSAM Only)
This page only applies to VSAM data sets and won't be shown for QSAM data sets.

- Key length: specify the key length
- Key offset: specify the key offset
- Control interval size: specify the control interval size
- Buffer space: specify the buffer space
- Sharing Cross Region: specify the cross region sharing
- Sharing Cross System: specify the cross system sharing
- Reuse, Recovery, Erase, Spanned, & Write Check: specify whether each of these flags should be enabled
VSAM Options (Continued) (VSAM Only)
This page only applies to VSAM data sets and won't be shown for QSAM data sets.

- Data Component: specify the name of the data component
- Catalog: specify the catalog the data set should be registered in
- Record Size Average: specify the average record size
- Record Size Maximum: specify the maximum record size
- Free Space % in Control interval: specify the free space in the control interval
- Free Space % in Control area: specify the free space in the control area
- Volumes: specify 0 to 16 comma separated volume serial identifiers
VSAM KSDS Index Options (Continued) (KSDS Only)
This page only applies to KSDS data sets and won't be shown for non-KSDS data sets.

- Index Component: specify the name of the index component
- Control interval size: specify the index control interval size
- Index Space Allocation Primary: Specify the amount of primary space for the index component
- Index Space Allocation Secondary: Specify the amount of secondary space for the index component
- Index Space Allocation Units: Specify the units for the index primary and secondary space allocation amounts
- Volumes: specify 0 to 16 comma separated volume serial identifiers
Allocation Space

- Expiration date: if checked, the data set will be allocated with the specified allocation date
- Space Allocation Primary: specify the amount of primary space
- Space Allocation Secondary: specify the amount of secondary space
- Space Allocation Units: specify the units for primary and secondary space allocation amounts
- SMS Data class: specify the system managed storage data class
- SMS Store class: specify the system managed storage store class
- SMS Management class: specify the system managed storage management class
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