Re: Zero downtime patching

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There is now way with Microsoft clustering. High Availability does not equal 100% availability.

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Chuck Timon, Jr.
Microsoft Corporation
Windows Server 2008 Readiness Team
This posting is provided 'AS IS" with no warranties, and confers no rights.
"Bernard Cheah [MVP]" <qbernard@xxxxxxxxxxxxxxxxxxx> wrote in message news:%23XBCio92HHA.3760@xxxxxxxxxxxxxxxxxxxxxxx
Thanks Chuck, that's the standard practice.. yet. during the 'failover' time - technically app is not working.
So while I'm accessing the file share say copying 10gb file, and cluster failover the filecopy will failed.

I'm looking for active/active setup that I can take down node without impacting the app.
As I mentioned - Oracle RAC for DB, now - I'm trying find out what's the best way for other cluster resources.

--
Regards,
Bernard Cheah
http://www.iis.net/
http://msmvps.com/blogs/bernard/


"Chuck [MSFT]" <ctimon@xxxxxxxxxxxxxxxxxxxx> wrote in message news:e8L7VM02HHA.3900@xxxxxxxxxxxxxxxxxxxxxxx
Cannot guarantee 'zero' down time but we can minimize it. Typically you patch cluster nodes by moving all resources to a node, patch the other nodes and then move the resources over to a 'patched' node and then patch the final node.

--
Chuck Timon, Jr.
Microsoft Corporation
Windows Server 2008 Readiness Team
This posting is provided 'AS IS" with no warranties, and confers no rights.

"Bernard Cheah [MVP]" <qbernard@xxxxxxxxxxxxxxxxxxx> wrote in message news:OmLxpuy2HHA.600@xxxxxxxxxxxxxxxxxxxxxxx
Experts,

I'm looking for a way to patch without app downtime.
So for example in DB - I can try many active boxes via Oracle RAC.
What about file share and other services ?


--
Regards,
Bernard Cheah
http://www.iis.net/
http://msmvps.com/blogs/bernard/







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