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11-20-2003 04:48 AM
11-20-2003 04:48 AM
IP network and Fibre Channel
I havea N4000 connect to a VA through a "HP Tachyon XL2 Fibre Channel Mass Storage Adapter" . The IP network was out (thre is just the core i/o lan) and during this time the system become slowly and generated the following error: Inquiry failed on FCP device. After the IP network was restored the system started working fine. How the IP network could affect the SAN? Is there any correlation? thanks"
3 REPLIES 3
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11-20-2003 05:30 AM
11-20-2003 05:30 AM
Re: IP network and Fibre Channel
The IP network should not affect the san unless the Fiber card is connected as a LAN card to an IP switch.
fcmsutil /dev/td0 stat
See if there are major errors. The fiber card might be going south for the winter.
SEP
fcmsutil /dev/td0 stat
See if there are major errors. The fiber card might be going south for the winter.
SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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11-20-2003 06:46 AM
11-20-2003 06:46 AM
Re: IP network and Fibre Channel
If using DNS, and the network is unavailable, system can slow significantly, even for non-networked functions.
If nsswitch ic configured for DNS first, the system will wait for a response for many functions, ( i suppose it's even possible to have DNS resolve localhost)
If nsswitch ic configured for DNS first, the system will wait for a response for many functions, ( i suppose it's even possible to have DNS resolve localhost)
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11-20-2003 07:42 AM
11-20-2003 07:42 AM
Re: IP network and Fibre Channel
Hmmm interesting.. the only thng that I know that would affect you is if you are running SecurePath 3.0B upwards which is now dependent (spagent?) on the network (or a loopback) fully up and running... Anither would be that you are runing IP over these FC cards (am not sure though if the XL2's support IP -- ie. IP over FC).. I am more familiar with JNI and Qlogic Cards which have the ability to run IP over FC at very high MTU's..
Hakuna Matata.
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