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Moving to Exchange DAG from single server

Hello Experts
Currently we have exchange 2016 CU6 installed on a single server. We have partitions as follows
- OS and Exchange Installation on C
- Protocol and IIS logging on E Drive
- Mailboxes and Transaction Logs on E Drive, this drive is mapped to EMC storage. Hence no mailboxes data is stored on local disk.

Can someone please provide the step by step guide to migrate the current setup from single server to HA or DAG

Thanks

Vick Vega

You simply provision one additional server, configure the SAME exact drive letters for the DB and LOGS and create a DAG.
https://technet.microsoft.com/en-us/library/dd351172(v=exchg.160).aspx

Overall you should start from here:
https://technet.microsoft.com/EN-US/library/dd298065(v=exchg.160).aspx

Techrunner

ASKER

Thanks As you mentioned simply I will install exchange 2016 on another server with same CU version
However, I have got some queries

- Can I share the same Storage LUN with a new server or I have to create a Storage LUN with same size ?
- Is it necessary to have both servers with identical specs ?
- Is it possible to do active/passive scenario ?

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Vick Vega

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Techrunner

ASKER

Thanks Ronin for brief explanation

We need to setup Active/Passive scenario with Mailbox and CAS HA.
Once the Active nodes goes fail, node2 will be become active for databases and for CAS we will just change the update DNS records manually and Firewall NAT rules.

Techrunner

ASKER

Just curios to know, in DAG how the election is done between Active/Passive nodes ?

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Vick Vega

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