Quantum Audio Scalar 50 SCSI ID Assignment with Native Fibre Channel Tape Drives

Figure 22 SANblade Manager

SCSI ID Assignment with Native Fibre Channel Tape Drives

Quantum Scalar 50 Tape Drive Installation Instructions

Document 81-81769-01 B01

September 2007

eIf you are still unable to view the Fibre Channel devices, launch the SANsurfer SANblade manager and click Connect. Accept the default “localhost” entry.

The SANblade manager displays (see figure 22).

The SANblade manager should display all connected Fibre Channel devices. If the library and tape drives do NOT display, check the cabling and connection status.

With native Fibre Channel tape drives, each tape drive is it’s own Fibre Channel target with a dedicated WWN and on LUN 0. The host (including the laptop using MAGMA box) will pick up the devices and assign local SCSI IDs in the order that the SAN devices are discovered. This will in almost every case NOT match the order of the devices as they are installed in the library. This is not a problem from the customer point of view, as long as drive serialization is enabled on the library and serialization is supported by the customers ISV application. This will allow the ISV application to put the drives in the correct order within the application.

In some rare cases it may be necessary to re-map the local SCSI ID assignments so that the library changer is at SCSI ID 0 and the drive SCSI ID assignments follow in order. The important thing to remember is that the order of the SCSI IDs on your system will probably not match the order of the drives in the library. Make sure to check the SCSI ID that is assigned to the WWN of the drive you want to communicate with or you may be communicating to the wrong drive

Fibre Channel Connectivity Troubleshooting 21