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Knowledge Base

[T Series]Modifying Configurations Led to a Failure to Detect LUNs

Publication Date:  2012-07-19  |   Views:  571  |   Downloads:  0  |   Author:  q00002810  |   Document ID:  EKB1000008657


Issue Description

Product and version information:

  • S5500T V100R001 V100R002
  • S5600T V100R001 V100R002
  • S6800T V100R001 V100R002
  • Application server operating system: Windows 2003 R2 EE SP2 for x86
  • HBA: Emulex LightPulse LPe111 (driver, HBA Firmware version: 2.50A8, and FC HBA BIOS version: 1.70a3)

The storage device and the application server were on a DAS network as shown in Figure1.
    Figure 1 DAS network

When the storage device was connected to the application server by using such a network, performing any of the following operations resulted in a failure to detect LUNs:

  • Change the FC host port mode.
  • Remove and reinsert optical fiber connecting the FC host port to the application server.
  • Connect the application server to another FC host port on the storage device.

Alarm Information


Handling Process

Download the driver for Emulex LightPulse LPe111 HBA and upgrade the Emulex LightPulse LPe111 HBA to

Root Cause

The storage device was connected to Emulex LightPulse LPe111 HBA through a DAS network. The incompliance of the Emulex LightPulse LPe111 HBA with the FC protocol led to a failure to detect LUNs when configurations were modified.


When encountering such a problem, contact Emulex technical support personnel for assistance.