The allocation detail line shows the amount of space requested at definition time. The data and index component values can have been specified by the user or chosen by VSAM based on the SPACE parameter provided for the cluster or model. The format is similar to the OS/VS SPACE parameter used on a dd JCL statement. The first value indicates the type of allocation (CYL or TRK). Second is the primary or initial quantity requested of the indicated type. Third is the secondary quantity for subsequently extending the amount of allocated space. If no secondary quantity was requested, this value is suppressed.
If the cluster type is keyed, the index allocation is provided in the same format.
Note: When a cluster is defined with a space allocation of records, Access Method Services converts this amount to an equivalent amount of storage in either tracks or cylinders. Therefore, CA Disk will always report allocation amounts in either tracks (TRK) or cylinders (CYL), and never in records.
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