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Spare server cannot find VTL3500 because of the change of FC switch configuration

Publication Date:  2012-10-15 Views:  116 Downloads:  0

Issue Description

The spare software cannot find the tape library virtualized by VTL3500, the spare server state is normal by checking, VTL3500 can find WWPN of the spare server when redistributing SAN client.

Alarm Information


Handling Process

1. The license is normal by checking.
2. The spare server is one of the blade, which is linked by FC switch module. VTL3500 finds there is no port ID information in WWPN when redistributing, as follow:

The adapter is normal, ‘Link Up’ by checking. Check the SNS table, there is no WWPN of the spare server.
Confirm it is the problem of link.
3. Communicating with the clients, the configuration of FC switch is updated, the cascading configuration is not right by checking. Link VTL3500 with blade by other FC port, VTL3500 adapter could find WWPN, redistribute it to the client, and everything is OK.

Root Cause

1. The license of VTL3500 is overdue and cannot be used anymore.
2. The link is in fault.


 When distributing clients, VTL3500 may leave the foretime WWPN information, display the linked WWPN information via SNS table.
Check the linked WWPN information in SNS table, when it says the spare server cannot find VTL.