Advanced storage area network

SAN components and architecture <<previous|next>>

NAS management

Set up persistent binding on an HBA

By Chris Poelker

SearchStorage.com

User question: How can I set up persistent binding on an HBA for a Unix host?

That is a function of the driver for the specific HBA and the SD.conf file. Use the GUI that came with the driver install software to set persistent bindings.

For JNI adapters, the utility is EZFibre. Use the target to WWN binding feature for the driver to set the WWN in the /kernel/drv/sd.conf file. You can set the proper bindings in the fcaw.conf file for JNI adapters like this:

# Configuration flag def_wwn_binding 
# Type: string; default: "$xxxxxxxxxxxxxxxx" (means WWN is "static don't care") 
# Sets the 16 digit hexidecimal default wwn binding for every target/lun 
# instance which does not explicitly define one. 
#      - A "$" preceding the string indicates static binding enabled 
#      - A "x" in place of a digit indicates "don't care" for that digit 
# *See technote for details on wwn bindings 
def_wwn_binding  = "xxxxxxxxxxxxxxxx"; 
For the SD.conf file, follow this format: 
name="sd" class="scsi" target=1 lun=0; wwn="2000004568018769"; 
name="sd" class="scsi" target=1 lun=1; 
name="sd" class="scsi" target=1 lun=2;

For more information:

Tip: Troubleshooting Fibre Channel host bus adapters in PCs

Tip: Taming HBAs

Tip: How HBAs and operating systems work together



About the author:Christopher Poelker is Christopher Poelker is a storage architect at Hitachi Data Systems, and SearchStorage.com's storage networking expert.


03 Apr 2004

Related Content

Related glossary terms

Terms from Whatis.com − the technology online dictionary
NAS management

Related Resources

Disclaimer: Our Tips Exchange is a forum for you to share technical advice and expertise with your peers and to learn from other enterprise IT professionals. TechTarget provides the infrastructure to facilitate this sharing of information. However, we cannot guarantee the accuracy or validity of the material submitted. You agree that your use of the Ask The Expert services and your reliance on any questions, answers, information or other materials received through this Web site is at your own risk.