asked on

Exchange 2016 Shadow Redundancy

I'm thinking of disabling shadow redundancy on Exchange 2016. I'm curious has one here permanently disabled it and were there any problems as a result. I understand its HA for message delivery but its gets really annoying with messages in the message queue. They are not there for days or anything, but annoying seeing them. Curious about anyone who has disabled it, good or bad.

Also i will be migrating alot of mailboxes from Exchange 2010 to Exchange 2016, and I have enabled circular logging but wondering if shadow redundancy should be disabled for this move. I would like to leave shadow disabled though. Let me know your opinions.

Vick Vega

You should not be changing this behavior and disabling shadow redundancy. It is there for a reason. Shadow redundancy is not utilized during mailbox moves as well it shouldn't be disabled.

timgreen7077

ASKER

Thanks for the info about it not being used during a migration. the reason I want to disable it is because it always seems that the queues have are full of shadow redundancy queues. when i say full I don't mean excessive but it just seems to never completely clear. is there a good reason not to disable it. MS provided the option to disable so it should be fine. what are your thoughts other than this is default actions.

Vick Vega

What you described is a normal and expected behavior, this is not something that you need to touch and alter. If there's emails in the queue is because emails flow through your environment, that's by design.

timgreen7077

ASKER

Agreed but is there really a good reason to make a shadow copy of every email that comes and then based on each hop in the environment?

timgreen7077

ASKER

we also have exchange 2010 and about 98% of our mail goes through exchange 2010 and the queues are always at 0 and shadow redundancy is also enabled on our 2010 environment. there are only about 8 users on exchange 2016 and they all have host files since we haven't changed internal DNS to all 2016 to proxy to 2010. you would think most mail goes through 2016 since there is always something in the shadow redundancy queue. it just seems really really strange.

ASKER CERTIFIED SOLUTION

Vick Vega

membership

This solution is only available to members.

To access this solution, you must be a member of Experts Exchange.

Start Free Trial

timgreen7077

ASKER

Thanks for taking the time responding buddy.

Vick Vega

All the best, I would gladly assist you with any other questions if needed.