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Dynamic Path Failover Driver for AIX FibreQuik Host Bus Adapter Installation and User Guide Cambex Corporation 115 Flanders Road Westborough, M

are accessed by different hosts, we could have the problem of "thrashing". One host tries to move the LUN group to preferred controller A wh

Adapter Specifications PC2000LC-HPSP PC2000LC-A PC4000 (Single Port) PC4002 (Dual Port) Bus PCI PCI-X 2.0Data rate (each dir.) 100/200 100/200/400

Software and Hardware Installation Driver Installation (command line) It is recommended that the drivers be installed prior to installing the HBAs.

The new driver may be installed on the system with the command: installp -acd <device> all where <device> is as described above. exa

Driver Installation (smit) The smit path is Software Installation and Maintenance Install and Update Software Install and Update Software by Pa

Hardware Installation Power down the system and install the adapter in a free slot. The PCI cards may be installed in either 32 or 64-bit PCI card s

AutoRecover cbxdpfar, the AutoRecover daemon, is automatically installed and enabled when the DPF driver is installed. Control of the daemon is done

AIX Configuration During power-up initialization, AIX will find and configure the new adapter(s) and any supported devices using the driver's co

Persistent Bindings Persistent Bindings is the term used to indicate the mapping of SCSI ID to FC Worldwide Name (WWN). By keeping a persistent bind

SMIT Commands Commands The adapter management commands available in SMIT are in the devices menu under Cambex Fibre Channel Adapter: List all Cambe

sw_fc_class (3) Fibre channel class. devtype_exclude ( ) List of SCSI device types to ignore during configuration. For example, specifying "1,5

The autorecover daemon will automatically move operation to preferred paths. The preferred path is the combination of path preference values for HBA,

for use until the purchased license is received. Issue the commands: cd /usr/lpp/cbxdpf mv license.30day license cfgmgr Licenses for OEM ver

• failed or offline status is considered first. A path will not be used if failed or offline. • Anti-thrashing prevents paths to the wrong controll

Troubleshooting Use the errpt command to identify the cause of failure. The lsdev command will provide the location of the component. For example,

Checklist for driver and HBA installation The following commands may be used to isolate problems during installation of the fibre channel driver and

cfgmgr -v >/tmp/cfg.log 2>&1 Should identify the card and configure it. If cfg.log contains the ID 7710002x and no driver is found, then th

The message no failover devices available indicates that the attached storage is not yet recognized by the DPF driver. This could mean that a platfor

Error Messages Various errors and notifications will be placed in the AIX error log. These can be read using the errpt command, or automatic notific

Upgrading the Driver When upgrading to a newer version of the driver there are two methods: 1) Use rmdev to remove all dependent devices, remove the

Table of ContentsDYNAMIC PATH FAILOVER FOR AIX ... 3 Introduction...

Appendix A Identifying Fibre Channel Components Copper DE9 GBIC Copper DE9 Cable 28

Copper HSSDC Cable Duplex SC Optical GBIC 29

Small form factor (SFF) optical LC cable 30

PC2000 LED Meanings Top LED – Transceiver hardware is detecting a signal. Middle LED – Firmware is being synchronized. Bottom LED – Flashing amber wh

PC4000 LED Meanings Y G A Y G A Off Off Off No Power On On On Power Applied Flash Flash Flash Initializing * Off Off On/Flash 1G (Flash indica

Declaration of conformity We Cambex Corporation of Westborough, Massachusetts, USA, declare under our sole responsibility, that the products PC2000LC-

Safety Notices FCC Warning This equipment has been tested and found to comply with the limits for a class A computing device pursuant to Part 15 of FC

Dynamic Path Failover License Agreement Cambex Dynamic Path Failover (the Software) is a licensed product. The user must consent to the provisions o

DECLARATION OF CONFORMITY... 33 Warning...

Dynamic Path Failover for AIX Introduction The Cambex FibreQuik™ Fibre Channel host bus adapters provide attachment of Fibre Channel devices to PCI o

SAN Management SAN Management is the top layer. It is responsible for assigning the required access for each server to each storage device. The uni

communicating via a network connection to each managed device. The Cambex Dynamic Path Failover driver is a Path Management component that allows mul

How Preferred Paths work The basic idea of multipathing is fairly simple. Access a disk on one of two paths. If the path fails, move I/O activity to

and set up preferences so that the remaining paths to the same controller are preferred over paths to the alternate controller. Example 1) Suppose w