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Multisite Recovery Procedure

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Multisite Recovery Procedure - 10.Jun.2010 9:31:02 AM   
jeff59

 

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Joined: 10.Jun.2010
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Hi guys.

Setting up a new Exchange 2010 environment.  4 mailbox servers across 2 sites(2+2).  Running active/active, so going to configure two DAGs to guard against the secondary site going down if the WAN has issues.  DAC will be enabled.

Simple question, I think, but I haven't been able to find a simple answer.  If a data center goes down, what manual steps need to be done to bring everything back online?  Same question for a single downed server?

I was hoping it was all automatic, but from my reading it seems it's not.  Any other gotchas?

Thanks in advance.
Post #: 1
RE: Multisite Recovery Procedure - 10.Jun.2010 4:09:38 PM   
jeff59

 

Posts: 2
Joined: 10.Jun.2010
Status: offline
FYI, got the info I was looking for:
http://social.technet.microsoft.com/Forums/en/exchange2010/thread/b5d7c1f6-9785-4d53-8938-a5971e0c6013

If anyone has more tips I'm all ears though :).

(in reply to jeff59)
Post #: 2
RE: Multisite Recovery Procedure - 28.Jun.2010 9:03:59 PM   
jmadsen

 

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Joined: 21.Jun.2010
From: California, US
Status: offline
DAG Name: MBX
Mailbox Servers at location A: MBX1, MBX2
HUB/CAS at location A: CAS1, CAS2 (Load balanced)
Mailbox Servers at location B: DRMBX1
HUB/CAS at location B: DRCAS1
Location A - AD-Site name site-a
Location B - AD-Site name: site-b
CAS Array IP address site A: 10.10.10.10
CAS IP address site B: 192.168.10.10

Testing and fail-over procedures for lost production datacenter
1. Simulate loss off main datacenter
a. Disconnect VPN connection between datacenters

2. Operations at DRS to bring Exchange (DRMBX1)
a. Log on to DRMBX1 using RDS
b. Open Exchange Management Shell
c. Stop-DatabaseAvailabilityGroup -Identity plbmbx -ActiveDirectorySite site-a –ConfigurationOnly
d. Restart DRMBX1 and wait until rebooted (this is an MS workaround)
e. Log on to DRMBX1 using RDS
f. Open Exchange Management Shell
g. Stop-Service ClusSvc
h. Restore-DatabaseAvailabilityGroup -Identity mbx -ActiveDirectorySite site-b
i. Get-MailboxDatabase | Move-ActiveMailboxDatabase -ActivateOnServer DRMBX1
j. Get-MailboxDatabase | Set-MailboxDatabase -PublicFolderDatabase public_folders_DRMBX1
k. Log on DNS Server using RDS
l. Open DNS Management Tool
m. Change A record cas.domain.local to 192.168.10.10
n. Change A record owa.domain.local to 192.168.10.10
Fail back to production datacenter
1. Cleanup active directory prior to failback
a. Log on to MBX1 using RDS
b. Open Exchange Management Shell
c. Stop-DatabaseAvailabilityGroup -Identity mbx -ActiveDirectorySite site-a
d. Stop-DatabaseAvailabilityGroup -Identity mbx -ActiveDirectorySite site-a –ConfigurationOnly

2. Reconnect sites
a. Reestablish VPN connection between datacenters
b. Verify that Active Directory is communicating across datacenters

3. Failback database servers
a. Log on to MBX1 using RDS
b. Open Exchange Management Shell
c. Start-DatabaseAvailabilityGroup -Identity plbmbx -ActiveDirectorySite site-a
d. Get-MailboxDatabase | Set-MailboxDatabase -PublicFolderDatabase public_folders_MBX1
e. Move-ActiveMailboxDatabase -Server DRMBX1
f. Log on DNS Server using RDS
g. Open DNS Management Tool
h. Change A record cas.domain.local to 10.10.10.10
i. Change A record owa.domain.local to 10.10.10.10


Please notice step 2 (d).
The failover had some issues in my configuration and we couldn’t fail-over properly without restarting the server we were failing over to

I opened a case with MS tech support and the restart ended up being the workaround – hopefully this will be fixed in SP1

If there is any demand for it – I will write a full article on the failover procedure with better explanations and more detailed notes

Jens Madsen
Sr. Systems Engineer and V-TSP

(in reply to jeff59)
Post #: 3

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