Physical Volume Layout

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A physical volume consists of a logically contiguous string of physical sectors.

Sectors are numbered 0 through the last physical sector number (LPSN) on the physical volume. The total number of physical sectors on a physical volume is LPSN + 1. The actual physical location and physical order of the sectors are transparent to the sector numbering scheme.

Note: Sector numbering applies to user-accessible data sectors only. Spare sectors and Customer-Engineer (CE) sectors are not included. CE sectors are reserved for use by diagnostic test routines or microcode.