Re: [pgsql-admin] Daily digest v1.3327 (2 messages)

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>> So, you have everything running and working in aprox. 10 seconds.
>
> All of the Windows Server stuff via Microsoft Cluster Services I'm aware of does its shared storage node fencing via
sendingspecific SCSI calls (PERSISTENT RESERVE) to the >storage.  That probably works fine if you have a Fiber Channel
arraythat supports that.  But I don't think there's any flexibility for alternative types of deployments.  As for the
complexity>of the setup time, while they have put a bunch of GUIs on it I've never see anything that tries to do
complicatedstorage array arrangements work in any time that isn't measure in large >multiples of hours, so "10 seconds"
I'mskeptical of. 

I think the 10 seconds here is referring to the time to automatically
failover to a secondary node in the cluster. I have worked extensively
in production environments with MS Cluster Server providing failover
for IIS, SQL Server and Apache HTTPD / Subversion, for older SCSI3 and
Fibre Channel arrays. In all cases, failover time - time for a client
to reconnect - was under 30s.

I am guessing that PostgreSQL would behave reasonably well in a MS
Cluster. I've thought about setting up a scenario to play with the
idea but haven't had a compelling reason to do so.