Extent Information Section

This section contains the last extent with the high allocated CI for:

a non-striped component
each stripe of a striped component

Offsets	Name	Length	Format	Description
0	0	SMF64FCC	4	binary	Beginning cylinder and track, in the form `CCHH` where `CC` is the cylinder number and `HH` is the track number.
4	4	SMF64TCC	4	binary	Ending cylinder and track, in the form `CCHH` where `CC` is the cylinder number and `HH` is the track number.
8	8	SMF64VSN	6	EBCDIC	Volume serial number of the volume containing the extent.
14	E	SMF64CUU	2	binary	Device number.
16	10	SMF64IND	2	EBCDIC	Spindle identification.
18	12	SMF64UTY	4	binary	Unit type.
22	16	SMF64RV1	4		Reserved.

The statistics section contains:

Accumulative statistics from creation until the current OPEN
Change in statistics from OPEN to time of EOV and CLOSE
Data set characteristics
Hiperbatch I/O statistics
Compressed data statistics
CF Cache structure statistics

The statistics section includes information on the number of execute channel programs (EXCP). For more information about how EXCP count is determined, see EXCP Count.