Fujitsu ETERNUS LT260 User Manual page 35

Chapter 3 Connections
3.1 Host Connection
A SAS tape drive is identified by a unique identifier called a World Wide Name (WWN) or World Wide Identifier
(WWID). The library assigns the WWID to the drive bay. When a tape drive is replaced, the WWID is re-
assigned to the new tape drive.
The operating system tracks the WWID for the tape drive on each HBA channel. Each of the drive connectors
on the fan-out cable is associated with an HBA channel. Once a tape drive has been plugged in, it should
remain on the same channel to retain the association between the HBA channel and WWID.
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FUJITSU Storage ETERNUS LT260 Tape Library User's Guide -Site Planning-
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