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05-16-2014 06:42 AM
05-16-2014 06:42 AM
Active/Standby to active/active configuration migration
Customer question to Andreas:
****************
Hi,
I have a customer that would like to go from active/standby configuration to active/active configuration in Virtual Connect and they are wondering if any documentation exists for this kind of maneuver?
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Info from Hoa:
VC Cookbooks with different scenarios may be your best bet. To reduce downtime take VC Backup and VC Show All * to help you pre-script new A/A configuration. You can also pre-apply the script to a test enclosure requires only VC module 1 in place so you can see SUS, networks, profiles in GUI terms.
Conversion process requires delete A/S domain so you need VC1 Default log in Toe Tag. With all backups in place for worst case scenario, shutdown OS/blades, delete VC domain, cli/GUI to OA to import VC modules, cli/GUI in VC1 with Default credential, restore or apply new VC A/A made/tested earlier. If restoring from VC tested enclosure, restore VC configuration with "Ignore enclosure serial number"check box. GUI in VCM, power on Blades.
Input from Vincent:
You don't need to delete the domain to go from Active/Standby to Active/Active. I don't think there is specific documentation on this (VC cookbooks address both scenarios but not going from one to the other) but it would go something like this:
- Edit your existing SUS to remove the uplinks from the even-numbered modules (the "B" side)
- Optionally edit your existing SUS and networks to append "_A" to their name or something similar, to be able to easily tell them apart from the B side further down the road
- Create another SUS for the B side (recent versions of the VC GUI have a nice Copy action on a SUS for this) with networks ending in "_B" and the same VLAN ids as the A side. Assign to this SUS the uplinks you had previously removed from the other SUS
- Edit your server profiles so that every even-numbered connection (physically going to a module on the B side) uses networks from the B side. You don't need to power off the servers for that
Probably best to do that during a maintenance window to make room for human mistakes but this should be all doable without any service interruption.
Reply from Hoa:
This may create a pending profile issue in my opinion. in a straight forward less complicate domain settings with no heartbeat/cluster within enclosure Blades. With verified pre-script in place conversion process (import & restore VC backup) takes under 25 minutes.
Reply from Mark:
No profile pending. That occurs when OA/Server data doesn't match VC data during an Import Enclosure/Recovery.
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05-16-2014 06:43 AM
05-16-2014 06:43 AM
Re: Active/Standby to active/active configuration migration
Andrea replied:
****************
Did many times Vincent procedure, in production. It worked very well.
Of course it has some risks.
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