Re: Exchange Management Console slow

Inline.
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Ed Crowley
MVP - Exchange
"Protecting the world from PSTs and brick backups!"

<diegovster@xxxxxxxxx> wrote in message
news:6ffb6992-7798-400e-bb2c-a236c8a2da24@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
SCC is not just implemented to protect against hardware failure, it
also provides protection against failure of the OS and its
applications and the argument of businesses making mistakes in their
"design, deployment or administration" is also applicable to CCR
implementations.

Okay, that's one more thing, the OS. So what are the odds of such a failure
versus the cost of such protection, minus the extra downtime due to
operational error? I still don't see a business case there.

Even though MNS requires nothing more than FSW and a fileshare on
another server, it is still an extra requirement and dependancy on the
MNS architecture.

Not sure what you mean by dependency, but a CCR cluster will continue to
operate without the FSW, so it's not a strict dependency except in the loss
of a node.

The network argument comes from capacity management
of bandwith. Yes its cheap but it is still a consideration. You now
have essentaily double the exchange traffic going through your
switches, and I dont think you can compare the size of a heartbeat
packet to the size of actual messaging packets that are being
replicated between the servers. Besides most people would use an
isolated network or a dedicated cross over cable as their primary
heartbeat network which places no impact on the production network
infrastructure and remove the production network as a point of failure
for cluster communications.

My experience is that most of my customers don't install crossover cables.
Still, why not use that "heartbeat" network for shipping logs at zero extra
cost?

As far as array based snapshots goes, most SANs give you the ability
to take a point in time copy of an exchange database, which can be
used in the case of database corruption.

Snapshots are generally not valid backups unless you're taking a VSS backup
because you can't guarantee transactional integrity. Still, there's no
reason you can't install CCR on a SAN making that a wash as well.


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