Emulex LP10000 Troubleshooting And Maintenance Manual

P003409-01A Rev A Critical Connectivity SolutionsTM ...

Page ii Copyright © 2008 Emulex. All rights reserved worldwide. No part of this document may be reproduced by any means or translated to any electronic medium without the prior written consent of Emulex. Information furnished by Emulex is believed to be accurate and reliable. However, no respons ...

Page iii Overview ................................................................................................................. 1 Be Informed, Stay Informed, Stay Current ......................................................... 1 Driver Updates ............................................... ...

Page 1 Overview Be Informed, Stay Informed, Stay Current In addition to staying informed and current, these steps are a great first defense when troubleshooting any Emulex adapter software and hardware issue. • Read the documentation on the Emulex Web site. From the main Emulex Web site, click ...

Page 2 Drivers for Linux • The driver for Linux supports kernels for Open Source drivers. • The driver download includes the base driver, and if it is not included in the applications kit, the application helper module install script. • The applications kit includes the HBAnyware utility an ...

Page 3 The Importance of Compatibility Emulex works very closely with storage and system providers to ensure optimal performance of supported systems. As part of that work, both Emulex and the storage and system providers test specific hardware configurations and specific versions of firmware, dr ...

Page 4 Troubleshooting 1. Observe the problem. 2. Isolate the problem. Observing the Problem Take a step back and think about what is being seen. Ask the following questions: • If the SAN has been working, what has changed? Apart from a catastrophic hardware failure, SANs typically do not just ...

Page 5 Isolating the Problem Once the problem is observed, determine where the problem originates. Eliminate problem sources on a coarse level, is the problem in the SAN or in the server? Determining this reduces the size and scope of the troubleshooting effort. If the SAN can be eliminated, only ...

Page 6 • Incorrectly set configuration parameters. If the driver parameters are set incorrectly, erratic behavior can occur such as very long failure timeouts, storage being overrun by too many concurrent commands and failures in path management software that rely on specific Emulex driver sett ...

Page 7 • Check switch zoning. Large switched fabrics are complicated to set up and maintain. Zoning is a key element of a good configuration, and it is one of the most complicated to manage. An improperly zoned fabric can cause a variety of problems that are not always directly attributable to ...