HGST Ultrastar 7K4000 (SAS) Hard Disk Drive Specification
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• Code Set specifies the data type for the identifier field. Code Set = 1 indicates binary data
• PIV (Protocol Identifier Valid) set to one indicates that the Protocol Identifier field contains a valid value.
• Association specifies the entity with which the Identifier field is associated: 1h for Target or Relative Port.
• Identifier Type specifies the format and assignment authority for the identifier: 3h indicates NAA format of the WWID
for Target Port.
• Identifier fields contain the actual Identifier Descriptor.
- The Target Port Identifiers are defined in the NAA IEE WWID format where:
World Wide ID is a 64-bit unique identification for each drive. The format is: 5000CCAh
xxxh n yyb where xxx is the 12-bit block assignment defined for each model and manufacturing site, n is the 22-
bit drive unique serial number, and yy is the 2-bit port/node ID
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