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тАО05-21-2009 04:43 AM
тАО05-21-2009 04:43 AM
We're about to get another FC blade module (freed up by mirating another blade installation to VC), but can't really justify another rackmount switch to have idetical configurations on both fabrics.
There appears to be no problem with connecting the EVA controllers and management server to the blade module external ports and dispensing with the rackmount switch entirely. I'm not sure what happens to the zoning configuration if we remove the root switch. The way an HP engineer explained it to me over a year ago is that the configuration data are stored on all the switches in the fabric, but we didn't discuss it in any detail.
Is that the case? Does the FC blade module have its own copy of the configuration? Can we remove the rackmount switch and plug everything into the blade switch without any configuration changes?
Solved! Go to Solution.
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тАО05-21-2009 06:15 AM
тАО05-21-2009 06:15 AM
Solutionthere is not really a "root switch" in a fabric. There is a switch role called "principal" which is doing some more work then the other switches (zoning changes, time sync etc.), but every switch in a fabric can be the principal. If you remove the B-Series 4/8 from you fabric, your zoning configuration will be remain on the other switches.
So add the second FC module to your C7000, attach the EVA to the both FC modules and remove the B-Series 4/8. This all can be done online.
Best regards,
Patrick
Patrick
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тАО05-21-2009 05:30 PM
тАО05-21-2009 05:30 PM
Re: removing cascaded FC switch and preserving configuration?
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тАО05-21-2009 10:41 PM
тАО05-21-2009 10:41 PM
Re: removing cascaded FC switch and preserving configuration?
if you have HP-UX servers attached to this SAN, you might also want to check the effect on these servers should you change the EVA connection on the SAN.
HP-UX systems recognize the Domain ID and port of the devices attached to the SAN (described in hardware path), so if you shift your EVA controllers to another switch with a different Domain ID/port, the corresponding device files will also change. This applies to SAN-attached tape libraries too.
This should not be an issue with Windows.
You should check before deploying any changes is to check compatibility of the new switch firmware with the existing ones.
As for zoning, all switches store the zoning configuration. i prefer creating aliases for each connection to help identify connections better and then create zones with these aliases. with aliases you are still not binding a connection to a physical port.
i hope this helps, good luck.
:)
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тАО05-27-2009 09:21 AM
тАО05-27-2009 09:21 AM
Re: removing cascaded FC switch and preserving configuration?
Last Thrusday we moved the FC cables to the blade switches without incident, and have decomissioned the rackmount switch. Our management (CV-EVA) server refused to see the active controller, but could after we restarted the server. The boot-from-SAN blades all stayed up. Generally uneventful.
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тАО05-27-2009 09:22 AM
тАО05-27-2009 09:22 AM