Microsoft SCR Question

Eurocentric · Joined: 26 Dec 2007 Posts: 3

I have two locations, NYC and London, Each site has 25 users with mailboxes,
I want to setup an Exch 07 ENT SP1 in each Site and have their mailbox
stores replicated to each other and switch them on if either one of the
servers failed. In other words, each server will be active but act as the
standby to the other one. Can this work? thanks

Archived from group: microsoft>public>exchange>clustering

Bharat Suneja [MVP] · Joined: 05 Aug 2007 Posts: 1043

- That's the purpose of Standby Continuous Replication (SCR).
- The process of "switching them" is called activation - note, this is not
clustering per se, so there's no "failover".
- Make sure you make yourself familiar with the activation process - test it
out in a lab environment.
- Your options are a) RecoverServer (when setting up a new server, can't use
this on an existing Exchange Server 2007 installation without uninstalling
Exchange), or b) Database Portability.
- In case of a clustered SCR source (CCR/SCC) and a clustered SCR target (no
CMS created... ), you can use /RecoverCMS.
--
Bharat Suneja
MVP - Exchange
www.zenprise.com
NEW blog location:
exchangepedia.com/blog
----------------------------------------------

"Eurocentric" wrote in message
news:%23EW%23zY8RIHA.5524@TK2MSFTNGP05.phx.gbl...
>I have two locations, NYC and London, Each site has 25 users with
>mailboxes, I want to setup an Exch 07 ENT SP1 in each Site and have their
>mailbox stores replicated to each other and switch them on if either one of
>the servers failed. In other words, each server will be active but act as
>the standby to the other one. Can this work? thanks
>
>

Eurocentric · Joined: 26 Dec 2007 Posts: 3

Thank you very much for the reply, so to be clear: if the london server
fails, can I failover users to the NYC Server without affecting NYC users?

Cheers,

"Bharat Suneja [MVP]" wrote in message @TK2MSFTNGP06.phx.gbl...
>- That's the purpose of Standby Continuous Replication (SCR).
> - The process of "switching them" is called activation - note, this is not
> clustering per se, so there's no "failover".
> - Make sure you make yourself familiar with the activation process - test
> it out in a lab environment.
> - Your options are a) RecoverServer (when setting up a new server, can't
> use this on an existing Exchange Server 2007 installation without
> uninstalling Exchange), or b) Database Portability.
> - In case of a clustered SCR source (CCR/SCC) and a clustered SCR target
> (no CMS created... ), you can use /RecoverCMS.
> --
> Bharat Suneja
> MVP - Exchange
> www.zenprise.com
> NEW blog location:
> exchangepedia.com/blog
> ----------------------------------------------
>
>
> "Eurocentric" wrote in message
> news:%23EW%23zY8RIHA.5524@TK2MSFTNGP05.phx.gbl...
>>I have two locations, NYC and London, Each site has 25 users with
>>mailboxes, I want to setup an Exch 07 ENT SP1 in each Site and have their
>>mailbox stores replicated to each other and switch them on if either one
>>of the servers failed. In other words, each server will be active but act
>>as the standby to the other one. Can this work? thanks
>>
>>
>
>

Bharat Suneja [MVP] · Joined: 05 Aug 2007 Posts: 1043

- Again, there's no "failover". That's the term used for High Availability
clusters - in case of Exchange Server 2007, this would be CCR or SCC
clusters.
- Failover implies automatic detection of a resource failure, and moving the
resource (group) to the standby box/node automatically (or with practically
no effort manually.... ). This is where SCR differs. Since SCR itself isn't
clustering, there's no "failover".
- However, you can activate a SCR target relatively quickly using the
methods described in my earlier post, and bring users online on the target
sever faster than you can restore the unavailable Exchange Server or Store.

--
Bharat Suneja
MVP - Exchange
www.zenprise.com
NEW blog location:
exchangepedia.com/blog
----------------------------------------------

"Eurocentric" wrote in message @TK2MSFTNGP03.phx.gbl...
> Thank you very much for the reply, so to be clear: if the london server
> fails, can I failover users to the NYC Server without affecting NYC users?
>
> Cheers,
>
>
> "Bharat Suneja [MVP]" wrote in message
> @TK2MSFTNGP06.phx.gbl...
>>- That's the purpose of Standby Continuous Replication (SCR).
>> - The process of "switching them" is called activation - note, this is
>> not clustering per se, so there's no "failover".
>> - Make sure you make yourself familiar with the activation process - test
>> it out in a lab environment.
>> - Your options are a) RecoverServer (when setting up a new server, can't
>> use this on an existing Exchange Server 2007 installation without
>> uninstalling Exchange), or b) Database Portability.
>> - In case of a clustered SCR source (CCR/SCC) and a clustered SCR target
>> (no CMS created... ), you can use /RecoverCMS.
>> --
>> Bharat Suneja
>> MVP - Exchange
>> www.zenprise.com
>> NEW blog location:
>> exchangepedia.com/blog
>> ----------------------------------------------
>>
>>
>> "Eurocentric" wrote in message
>> news:%23EW%23zY8RIHA.5524@TK2MSFTNGP05.phx.gbl...
>>>I have two locations, NYC and London, Each site has 25 users with
>>>mailboxes, I want to setup an Exch 07 ENT SP1 in each Site and have their
>>>mailbox stores replicated to each other and switch them on if either one
>>>of the servers failed. In other words, each server will be active but act
>>>as the standby to the other one. Can this work? thanks
>>>
>>>
>>
>>
>
>

John Fullbright · Joined: 05 Aug 2007 Posts: 365

Oh, there is user impact; how much depends on what client is in use. DO
familiarize yourself with the process.

"Bharat Suneja [MVP]" wrote in message %23RIHA.4196@TK2MSFTNGP04.phx.gbl...
>- Again, there's no "failover". That's the term used for High Availability
>clusters - in case of Exchange Server 2007, this would be CCR or SCC
>clusters.
> - Failover implies automatic detection of a resource failure, and moving
> the resource (group) to the standby box/node automatically (or with
> practically no effort manually.... ). This is where SCR differs. Since SCR
> itself isn't clustering, there's no "failover".
> - However, you can activate a SCR target relatively quickly using the
> methods described in my earlier post, and bring users online on the target
> sever faster than you can restore the unavailable Exchange Server or
> Store.
>
> --
> Bharat Suneja
> MVP - Exchange
> www.zenprise.com
> NEW blog location:
> exchangepedia.com/blog
> ----------------------------------------------
>
>
> "Eurocentric" wrote in message
> @TK2MSFTNGP03.phx.gbl...
>> Thank you very much for the reply, so to be clear: if the london server
>> fails, can I failover users to the NYC Server without affecting NYC
>> users?
>>
>> Cheers,
>>
>>
>> "Bharat Suneja [MVP]" wrote in message
>> @TK2MSFTNGP06.phx.gbl...
>>>- That's the purpose of Standby Continuous Replication (SCR).
>>> - The process of "switching them" is called activation - note, this is
>>> not clustering per se, so there's no "failover".
>>> - Make sure you make yourself familiar with the activation process -
>>> test it out in a lab environment.
>>> - Your options are a) RecoverServer (when setting up a new server, can't
>>> use this on an existing Exchange Server 2007 installation without
>>> uninstalling Exchange), or b) Database Portability.
>>> - In case of a clustered SCR source (CCR/SCC) and a clustered SCR target
>>> (no CMS created... ), you can use /RecoverCMS.
>>> --
>>> Bharat Suneja
>>> MVP - Exchange
>>> www.zenprise.com
>>> NEW blog location:
>>> exchangepedia.com/blog
>>> ----------------------------------------------
>>>
>>>
>>> "Eurocentric" wrote in message
>>> news:%23EW%23zY8RIHA.5524@TK2MSFTNGP05.phx.gbl...
>>>>I have two locations, NYC and London, Each site has 25 users with
>>>>mailboxes, I want to setup an Exch 07 ENT SP1 in each Site and have
>>>>their mailbox stores replicated to each other and switch them on if
>>>>either one of the servers failed. In other words, each server will be
>>>>active but act as the standby to the other one. Can this work? thanks
>>>>
>>>>
>>>
>>>
>>
>>
>
>

Eurocentric · Joined: 26 Dec 2007 Posts: 3

Thank you, One more question: can SCR be setup on an Exchange Server hosting
multiple Exchange Roles? for example each location server will have these
roles? Hub Trans, Mailbox, Client Access.

Thanks

"John Fullbright" wrote in message
news:%23xcFvVPTIHA.4684@TK2MSFTNGP06.phx.gbl...
> Oh, there is user impact; how much depends on what client is in use. DO
> familiarize yourself with the process.
>
>
> "Bharat Suneja [MVP]" wrote in message
> %23RIHA.4196@TK2MSFTNGP04.phx.gbl...
>>- Again, there's no "failover". That's the term used for High Availability
>>clusters - in case of Exchange Server 2007, this would be CCR or SCC
>>clusters.
>> - Failover implies automatic detection of a resource failure, and moving
>> the resource (group) to the standby box/node automatically (or with
>> practically no effort manually.... ). This is where SCR differs. Since
>> SCR itself isn't clustering, there's no "failover".
>> - However, you can activate a SCR target relatively quickly using the
>> methods described in my earlier post, and bring users online on the
>> target sever faster than you can restore the unavailable Exchange Server
>> or Store.
>>
>> --
>> Bharat Suneja
>> MVP - Exchange
>> www.zenprise.com
>> NEW blog location:
>> exchangepedia.com/blog
>> ----------------------------------------------
>>
>>
>> "Eurocentric" wrote in message
>> @TK2MSFTNGP03.phx.gbl...
>>> Thank you very much for the reply, so to be clear: if the london server
>>> fails, can I failover users to the NYC Server without affecting NYC
>>> users?
>>>
>>> Cheers,
>>>
>>>
>>> "Bharat Suneja [MVP]" wrote in message
>>> @TK2MSFTNGP06.phx.gbl...
>>>>- That's the purpose of Standby Continuous Replication (SCR).
>>>> - The process of "switching them" is called activation - note, this is
>>>> not clustering per se, so there's no "failover".
>>>> - Make sure you make yourself familiar with the activation process -
>>>> test it out in a lab environment.
>>>> - Your options are a) RecoverServer (when setting up a new server,
>>>> can't use this on an existing Exchange Server 2007 installation without
>>>> uninstalling Exchange), or b) Database Portability.
>>>> - In case of a clustered SCR source (CCR/SCC) and a clustered SCR
>>>> target (no CMS created... ), you can use /RecoverCMS.
>>>> --
>>>> Bharat Suneja
>>>> MVP - Exchange
>>>> www.zenprise.com
>>>> NEW blog location:
>>>> exchangepedia.com/blog
>>>> ----------------------------------------------
>>>>
>>>>
>>>> "Eurocentric" wrote in message
>>>> news:%23EW%23zY8RIHA.5524@TK2MSFTNGP05.phx.gbl...
>>>>>I have two locations, NYC and London, Each site has 25 users with
>>>>>mailboxes, I want to setup an Exch 07 ENT SP1 in each Site and have
>>>>>their mailbox stores replicated to each other and switch them on if
>>>>>either one of the servers failed. In other words, each server will be
>>>>>active but act as the standby to the other one. Can this work? thanks
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>

Scott Schnoll [MSFT] · Joined: 05 Aug 2007 Posts: 89

Yes, provided the source/target are not clustered.
--
Regards,

Scott Schnoll
Microsoft Corporation
This posting is provided "AS IS" with no warranties, and confers no
rights. Please do not send email directly to this alias. This alias is for
newsgroup purposes only.

"Eurocentric" wrote in message
news:%23iBB7$jVIHA.4448@TK2MSFTNGP03.phx.gbl...
> Thank you, One more question: can SCR be setup on an Exchange Server
> hosting multiple Exchange Roles? for example each location server will
> have these roles? Hub Trans, Mailbox, Client Access.
>
> Thanks
>
> "John Fullbright" wrote in message
> news:%23xcFvVPTIHA.4684@TK2MSFTNGP06.phx.gbl...
>> Oh, there is user impact; how much depends on what client is in use. DO
>> familiarize yourself with the process.
>>
>>
>> "Bharat Suneja [MVP]" wrote in message
>> %23RIHA.4196@TK2MSFTNGP04.phx.gbl...
>>>- Again, there's no "failover". That's the term used for High
>>>Availability clusters - in case of Exchange Server 2007, this would be
>>>CCR or SCC clusters.
>>> - Failover implies automatic detection of a resource failure, and moving
>>> the resource (group) to the standby box/node automatically (or with
>>> practically no effort manually.... ). This is where SCR differs. Since
>>> SCR itself isn't clustering, there's no "failover".
>>> - However, you can activate a SCR target relatively quickly using the
>>> methods described in my earlier post, and bring users online on the
>>> target sever faster than you can restore the unavailable Exchange Server
>>> or Store.
>>>
>>> --
>>> Bharat Suneja
>>> MVP - Exchange
>>> www.zenprise.com
>>> NEW blog location:
>>> exchangepedia.com/blog
>>> ----------------------------------------------
>>>
>>>
>>> "Eurocentric" wrote in message
>>> @TK2MSFTNGP03.phx.gbl...
>>>> Thank you very much for the reply, so to be clear: if the london server
>>>> fails, can I failover users to the NYC Server without affecting NYC
>>>> users?
>>>>
>>>> Cheers,
>>>>
>>>>
>>>> "Bharat Suneja [MVP]" wrote in message
>>>> @TK2MSFTNGP06.phx.gbl...
>>>>>- That's the purpose of Standby Continuous Replication (SCR).
>>>>> - The process of "switching them" is called activation - note, this is
>>>>> not clustering per se, so there's no "failover".
>>>>> - Make sure you make yourself familiar with the activation process -
>>>>> test it out in a lab environment.
>>>>> - Your options are a) RecoverServer (when setting up a new server,
>>>>> can't use this on an existing Exchange Server 2007 installation
>>>>> without uninstalling Exchange), or b) Database Portability.
>>>>> - In case of a clustered SCR source (CCR/SCC) and a clustered SCR
>>>>> target (no CMS created... ), you can use /RecoverCMS.
>>>>> --
>>>>> Bharat Suneja
>>>>> MVP - Exchange
>>>>> www.zenprise.com
>>>>> NEW blog location:
>>>>> exchangepedia.com/blog
>>>>> ----------------------------------------------
>>>>>
>>>>>
>>>>> "Eurocentric" wrote in
>>>>> message news:%23EW%23zY8RIHA.5524@TK2MSFTNGP05.phx.gbl...
>>>>>>I have two locations, NYC and London, Each site has 25 users with
>>>>>>mailboxes, I want to setup an Exch 07 ENT SP1 in each Site and have
>>>>>>their mailbox stores replicated to each other and switch them on if
>>>>>>either one of the servers failed. In other words, each server will be
>>>>>>active but act as the standby to the other one. Can this work? thanks
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>

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