active/passive with multiple instances -- sql server clustering

sql server clustering : active/passive with multiple instances

ronc
12/22/2005 11:45:02 AM

Our production enviornment consists of 2 production servers in an
active\passive set up. The production enviornment has 3 instances. Is it
possible that a single instance can fail over to the standby node and leaving
the other 2 behind? We think this is happeing but I thought if the server
fails over to the passive server then it would include all 3 instances (All
or nothing)

Geoff N. Hiten
12/22/2005 3:23:52 PM

Nope. Each instance has its own resource dependency list. If a resource
that is unique for a single instance times out, it will trip that instance
only for failover.

--
Geoff N. Hiten
Senior Database Administrator
Microsoft SQL Server MVP

[quoted text, click to view]

Anthony Thomas
12/24/2005 9:42:59 AM

That's why there are Resource Groups. Clearly, if the underlying hardware
has an issue, then all groups will failover, but that is just because they
share a common resource, not resource dependencies.

The cluster group, and typically the MS DTC, are left behind when the SQL
Server group fails over.

Each resource group is a separate virtual host and behaves independently
from the others.

Sincerely,

Anthony Thomas

--

[quoted text, click to view]

Kevin3NF
1/7/2006 3:54:52 PM

Thus turning your cluster into active/active :-D

--
Kevin Hill
3NF Consulting
www.3nf-inc.com/NewsGroups.htm

[quoted text, click to view]

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