WWN
World-Wide Name. A unique 64-bit or 128-bit value used to identify Fibre Channel devices on
an arbitrated loop. The WWN consists of a prefix issued by the IEEE to uniquely identify the
company and a suffix that is issued by the company.
zero fill
To fill unused storage space with the representation of the character denoting "0".
zone
A unit of physical disk space reserved by a controller node for snapshot or snapshot administration
data. A single zone may occupy space on more than one disk.
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