PRIMECLUSTER Global File Services Configuration and Administration Guide 4.2 (Solaris(TM) Operating Environment)

13.1.1 Super block

The super block contains the file system type, the creation and update dates, label data, the size and layout of the file system, and a data history of empty areas.

The super block copy at the end of the file system exists to allow continuous processing if a disk device block failure occurs in the primary super block area.