High Availability for Existing Single Exchange Server holding Multiple Domains

Hi,
I'm trying to implement solution for Backup/Redundancy/High-availability for the existing Exchange Server 2013.
Currently the Exchange Server 2013 deployed on 2012 Server is holding 4 Domains (1 internal domain & 3 public/published domains). The Exchange Server is hosted Internally & published to send & receive mails from the SMTP relay(Third party
resides on internet) server. Client Access & Mailbox Services are on the same server.
Please advice me which is the best scenario to implement a backup/redundancy/high-availability for the current server.
Thanks in advance.
Regards
Roopesh S

Hi,
The following links will help.
High Availability and Site Resilience
http://technet.microsoft.com/en-us/library/dd638137(v=exchg.150).aspx
Deploying High Availability and Site Resilience
http://technet.microsoft.com/en-us/library/dd638129(v=exchg.150).aspx
Planning for High Availability and Site Resilience
http://technet.microsoft.com/en-us/library/dd638104(v=exchg.150).aspx
Backup, Restore, and Disaster Recovery
http://technet.microsoft.com/en-us/library/dd876874(v=exchg.150).aspx
ecsword

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Please remember to mark your question as "answered" if this solves your problem.

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Dear Experts,
I have 2 physical server with local disks only. I want to setup below on same with high availability, please advise best prossible options. We will be using windows 2012 R2 Server..
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http://help.globalscape.com/help/wafs3/using_microsoft_dfs_for_failover.htm
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http://technet.microsoft.com/library/cc773238(WS.10).aspx
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http://technet.microsoft.com/en-us/library/hh831349.aspx
http://www.aidanfinn.com/?p=12786
http://www.aidanfinn.com/?p=12786
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Fault
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StarWind VSAN [Virtual SAN] clusters Hyper-V without SAS, Fibre Channel, SMB 3.0 or iSCSI, uses Ethernet to mirror internally mounted SATA disks between hosts.

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grouping.size=100
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[2011-03-29T20:20:45.405-07:00] [EPMLCM] [NOTIFICATION] [EPMLCM-11001] [oracle.EPMLCM] [tid: 10] [ecid: 0000Iw4ll2fApIOpqg4EyY1D^e6D000000,0] [arg: /server1/import_export/msr/PKG_34.xml] Executing package file - /server1/import_export/msr/PKG_34.xml
[2011-03-29T20:20:45.530-07:00] [EPMLCM] [ERROR] [EPMLCM-12097] [oracle.EPMLCM] [tid: 10] [ecid: 0000Iw4ll2fApIOpqg4EyY1D^e6D000000,0] [SRC_CLASS: com.hyperion.lcm.clu.CLUProcessor] [SRC_METHOD: execute:?] Cannot find the migration definition file in the specified file path - /server1/import_export/msr/PKG_34.xml.
[2011-03-29T20:20:45.546-07:00] [EPMLCM] [NOTIFICATION] [EPMLCM-11000] [oracle.EPMLCM] [tid: 10] [ecid: 0000Iw4ll2fApIOpqg4EyY1D^e6D000000,0] [arg: Completed with failures.] Migration Status - Completed with failures.
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Bug 11683769: LCM MIGRATIONS FAIL WHEN HSS IS SET UP FOR HA AND HSS IS STARTED AS A SERVICE
Bug Attributes
Type B - Defect Fixed in Product Version 11.1.2.0.000PSE
Severity 3 - Minimal Loss of Service Product Version 11.1.2.0.00
Status 90 - Closed, Verified by Filer Platform 233 - Microsoft Windows x64 (64-bit)
Created 25-Jan-2011 Platform Version 2003 R2
Updated 24-Feb-2011 Base Bug 11696634
Database Version 2005
Affects Platforms Generic
Product Source Oracle
Related Products
Line - Family -
Area - Product 4482 - Hyperion Lifecycle Management
Hdr: 11683769 2005 SHRDSRVC 11.1.2.0.00 PRODID-4482 PORTID-233 11696634Abstract: LCM MIGRATIONS FAIL WHEN HSS IS SET UP FOR HA AND HSS IS STARTED AS A SERVICE*** 01/25/11 05:15 pm ***Hyperion Foundation Services is set up for high availability. Lifecycle management migrations fail when running Hyperion Foundation Services - Managed Server as a Windows Service. We applied the following configuration changes:Set up shared disk then we modify the migration.properties.filesystem.artifact.path=\\<servername>\LCM\import_export We are able to get the migrations to work if we set filesystem.artifact.path=V:\import_export (a maped drive to the shared disk) and we run Hyperion Foundation Services in console mode.*** 01/25/11 05:24 pm *** *** 01/28/11 03:32 pm *** (CHG: Sta->11)*** 01/28/11 03:32 pm *** (CHG: Comp. Ver-> 11.1.2 -> 11.1.2.0.00)*** 01/28/11 03:34 pm *** (CHG: Base Bug-> NULL -> 11696634)*** 02/02/11 01:53 pm *** (CHG: Sta->41)*** 02/02/11 01:53 pm ****** 02/02/11 05:18 pm ****** 02/03/11 10:30 am ****** 02/04/11 03:53 pm *** *** 02/04/11 03:53 pm *** (CHG: Sta->80 Asg->NEW OWNER)*** 02/10/11 08:49 am ****** 02/15/11 11:59 am ****** 02/15/11 04:56 pm ****** 02/16/11 09:58 am *** (CHG: Sta->90)*** 02/16/11 09:58 am ****** 02/16/11 02:12 pm *** (CHG: Sta->93)*** 02/24/11 06:14 pm *** (CHG: Sta->90)Back to top

it is not possible to implement a kind of HA between two different appliances 3315 and 3395.
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Node B(Admin(Secondary), Monitoring(Secondary) and PSN).
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Rate if helpful and Marked As correct if it is correct for the experts.
Regards,

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