Virtual TapeServer SCSI-to-FC Adapter User Manual

9-5
Chapter 9: Troubleshooting
Verify Mapping
Verify that all desired devices have been discovered and mapped. If using Indexed or SCC
mapping, try swapping to Auto-assigned to see if this solves the problem.
Verify Devices
It may be useful to connect the SCSI target devices you are attempting to use to the native SCSI
interface to verify that the devices are functional. SCSI target devices can be connected to a host
SCSI bus to verify they are functional.
Verify Host Configuration
In some cases, it may be that the FC host bus adapter or host device driver may not be working
properly. Check the configuration of these elements. It may be useful to check the release notes for
the driver provided to see if there are any specific issues or required configuration. It may also be
useful to ensure that you are using a current version of the host bus adapter driver.
PRLI Data
The VT5900-SA supports the discovery mechanism. The VT5900-SA returns the PRLI response
data as specified in Table 9-1.
Table 9-1. VT5900-SA PRLI response data
Item Value
PRLI Command Code 0x20
Page Length 0x10
Payload Length 0x10
Type Code 0x8
Type Code Extension 0x0
OPA 0x0
RPA 0x0
IPE 0x1
Response Code 0x1
Originator Process Associator 0x0
Responder Process Associator 0x0
Initiator Function 0x1
Target Function 0x1