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date: Mon, 21 Apr 2008 08:47:03 -0700,    group: microsoft.public.exchange.clustering        back       


CCR Clustering Questions   
I have several questions in regards to CCR Clustering.

1. I am planning on dropping the quorum(File-Witness Share) on one of my Hub 
transport servers. If the hub Transport server were to go down could the 
cluster fail over? 

2. If the Quorum were to go down would the active Exchange Node be down as 
well or just the Cluster operations?

3. If the Hub Transport server were down that was holding the FWS would it 
be possible to form a new FWS on another server? Is this a difficult 
operation?

Thanks.
date: Mon, 21 Apr 2008 08:47:03 -0700   author:   KJK

Re: CCR Clustering Questions   
Responses inline.

-- 
Bharat Suneja
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.


"KJK"  wrote in message 
news:234F2B7F-BA95-41C3-A3B9-48EFB3A118B5@microsoft.com...
>I have several questions in regards to CCR Clustering.
>
> 1. I am planning on dropping the quorum(File-Witness Share) on one of my 
> Hub
> transport servers. If the hub Transport server were to go down could the
> cluster fail over?

No, the cluster would not failover if the FSW wasn't available.

>
> 2. If the Quorum were to go down would the active Exchange Node be down as
> well or just the Cluster operations?

Using a Majority Node Set quorum with a File Share Witness, each node has a 
local copy of the quorum, in addition to the FSW having that information. 
The quorum doesn't really go down in this case. If the FSW is unavailable, 
the cluster is not impacted as long as both nodes are available. The FSW is 
required for automatic failovers.

>
> 3. If the Hub Transport server were down that was holding the FWS would it
> be possible to form a new FWS on another server? Is this a difficult
> operation?

Fairly simple to recreate the FSW on another server - it's the same 
procedure you used to create the original FSW, doesn't take long, and can be 
scripted.

>
> Thanks.
date: Mon, 21 Apr 2008 09:14:20 -0700   author:   Bharat Suneja [MSFT]

Re: CCR Clustering Questions   
Great Responses. Thank you.

"Bharat Suneja [MSFT]" wrote:

> Responses inline.
> 
> -- 
> Bharat Suneja
> 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.
> 
> 
> "KJK"  wrote in message 
> news:234F2B7F-BA95-41C3-A3B9-48EFB3A118B5@microsoft.com...
> >I have several questions in regards to CCR Clustering.
> >
> > 1. I am planning on dropping the quorum(File-Witness Share) on one of my 
> > Hub
> > transport servers. If the hub Transport server were to go down could the
> > cluster fail over?
> 
> No, the cluster would not failover if the FSW wasn't available.
> 
> >
> > 2. If the Quorum were to go down would the active Exchange Node be down as
> > well or just the Cluster operations?
> 
> Using a Majority Node Set quorum with a File Share Witness, each node has a 
> local copy of the quorum, in addition to the FSW having that information. 
> The quorum doesn't really go down in this case. If the FSW is unavailable, 
> the cluster is not impacted as long as both nodes are available. The FSW is 
> required for automatic failovers.
> 
> >
> > 3. If the Hub Transport server were down that was holding the FWS would it
> > be possible to form a new FWS on another server? Is this a difficult
> > operation?
> 
> Fairly simple to recreate the FSW on another server - it's the same 
> procedure you used to create the original FSW, doesn't take long, and can be 
> scripted.
> 
> >
> > Thanks. 
> 
>
date: Mon, 21 Apr 2008 11:00:01 -0700   author:   KJK

Re: CCR Clustering Questions   
Just one further question.

On point 2, you wrote the FSW is necessary for automatic failovers.

If the FSW was unavailable would it be possible to do a manual failover or 
failback?

thanks again.

"Bharat Suneja [MSFT]" wrote:

> Responses inline.
> 
> -- 
> Bharat Suneja
> 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.
> 
> 
> "KJK"  wrote in message 
> news:234F2B7F-BA95-41C3-A3B9-48EFB3A118B5@microsoft.com...
> >I have several questions in regards to CCR Clustering.
> >
> > 1. I am planning on dropping the quorum(File-Witness Share) on one of my 
> > Hub
> > transport servers. If the hub Transport server were to go down could the
> > cluster fail over?
> 
> No, the cluster would not failover if the FSW wasn't available.
> 
> >
> > 2. If the Quorum were to go down would the active Exchange Node be down as
> > well or just the Cluster operations?
> 
> Using a Majority Node Set quorum with a File Share Witness, each node has a 
> local copy of the quorum, in addition to the FSW having that information. 
> The quorum doesn't really go down in this case. If the FSW is unavailable, 
> the cluster is not impacted as long as both nodes are available. The FSW is 
> required for automatic failovers.
> 
> >
> > 3. If the Hub Transport server were down that was holding the FWS would it
> > be possible to form a new FWS on another server? Is this a difficult
> > operation?
> 
> Fairly simple to recreate the FSW on another server - it's the same 
> procedure you used to create the original FSW, doesn't take long, and can be 
> scripted.
> 
> >
> > Thanks. 
> 
>
date: Thu, 24 Apr 2008 07:41:13 -0700   author:   KJK

Re: CCR Clustering Questions   
On Thu, 24 Apr 2008 07:41:13 -0700, KJK
 wrote:

>Just one further question.
>
>On point 2, you wrote the FSW is necessary for automatic failovers.
>
>If the FSW was unavailable would it be possible to do a manual failover or 
>failback?

Check the latest guidance on what to do if the FSW is unavail:

http://msexchangeteam.com/archive/2008/04/03/448615.aspx


>
>thanks again.
>
>"Bharat Suneja [MSFT]" wrote:
>
>> Responses inline.
>> 
>> -- 
>> Bharat Suneja
>> 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.
>> 
>> 
>> "KJK"  wrote in message 
>> news:234F2B7F-BA95-41C3-A3B9-48EFB3A118B5@microsoft.com...
>> >I have several questions in regards to CCR Clustering.
>> >
>> > 1. I am planning on dropping the quorum(File-Witness Share) on one of my 
>> > Hub
>> > transport servers. If the hub Transport server were to go down could the
>> > cluster fail over?
>> 
>> No, the cluster would not failover if the FSW wasn't available.
>> 
>> >
>> > 2. If the Quorum were to go down would the active Exchange Node be down as
>> > well or just the Cluster operations?
>> 
>> Using a Majority Node Set quorum with a File Share Witness, each node has a 
>> local copy of the quorum, in addition to the FSW having that information. 
>> The quorum doesn't really go down in this case. If the FSW is unavailable, 
>> the cluster is not impacted as long as both nodes are available. The FSW is 
>> required for automatic failovers.
>> 
>> >
>> > 3. If the Hub Transport server were down that was holding the FWS would it
>> > be possible to form a new FWS on another server? Is this a difficult
>> > operation?
>> 
>> Fairly simple to recreate the FSW on another server - it's the same 
>> procedure you used to create the original FSW, doesn't take long, and can be 
>> scripted.
>> 
>> >
>> > Thanks. 
>> 
>>
date: Thu, 24 Apr 2008 11:55:26 -0400   author:   Andy David {MVP}

Re: CCR Clustering Questions   
Thats a excellent article. Glad I saw that.

BUT, I am still wondering if failover is possible if the FSW is unavailable?

"Andy David {MVP}" wrote:

> On Thu, 24 Apr 2008 07:41:13 -0700, KJK
>  wrote:
> 
> >Just one further question.
> >
> >On point 2, you wrote the FSW is necessary for automatic failovers.
> >
> >If the FSW was unavailable would it be possible to do a manual failover or 
> >failback?
> 
> Check the latest guidance on what to do if the FSW is unavail:
> 
> http://msexchangeteam.com/archive/2008/04/03/448615.aspx
> 
> 
> >
> >thanks again.
> >
> >"Bharat Suneja [MSFT]" wrote:
> >
> >> Responses inline.
> >> 
> >> -- 
> >> Bharat Suneja
> >> 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.
> >> 
> >> 
> >> "KJK"  wrote in message 
> >> news:234F2B7F-BA95-41C3-A3B9-48EFB3A118B5@microsoft.com...
> >> >I have several questions in regards to CCR Clustering.
> >> >
> >> > 1. I am planning on dropping the quorum(File-Witness Share) on one of my 
> >> > Hub
> >> > transport servers. If the hub Transport server were to go down could the
> >> > cluster fail over?
> >> 
> >> No, the cluster would not failover if the FSW wasn't available.
> >> 
> >> >
> >> > 2. If the Quorum were to go down would the active Exchange Node be down as
> >> > well or just the Cluster operations?
> >> 
> >> Using a Majority Node Set quorum with a File Share Witness, each node has a 
> >> local copy of the quorum, in addition to the FSW having that information. 
> >> The quorum doesn't really go down in this case. If the FSW is unavailable, 
> >> the cluster is not impacted as long as both nodes are available. The FSW is 
> >> required for automatic failovers.
> >> 
> >> >
> >> > 3. If the Hub Transport server were down that was holding the FWS would it
> >> > be possible to form a new FWS on another server? Is this a difficult
> >> > operation?
> >> 
> >> Fairly simple to recreate the FSW on another server - it's the same 
> >> procedure you used to create the original FSW, doesn't take long, and can be 
> >> scripted.
> >> 
> >> >
> >> > Thanks. 
> >> 
> >> 
>
date: Thu, 24 Apr 2008 09:19:00 -0700   author:   KJK

Re: CCR Clustering Questions   
On Thu, 24 Apr 2008 09:19:00 -0700, KJK
 wrote:

>Thats a excellent article. Glad I saw that.
>
>BUT, I am still wondering if failover is possible if the FSW is unavailable?

No, thats why you have to create a new one and force quorum.

>
>"Andy David {MVP}" wrote:
>
>> On Thu, 24 Apr 2008 07:41:13 -0700, KJK
>>  wrote:
>> 
>> >Just one further question.
>> >
>> >On point 2, you wrote the FSW is necessary for automatic failovers.
>> >
>> >If the FSW was unavailable would it be possible to do a manual failover or 
>> >failback?
>> 
>> Check the latest guidance on what to do if the FSW is unavail:
>> 
>> http://msexchangeteam.com/archive/2008/04/03/448615.aspx
>> 
>> 
>> >
>> >thanks again.
>> >
>> >"Bharat Suneja [MSFT]" wrote:
>> >
>> >> Responses inline.
>> >> 
>> >> -- 
>> >> Bharat Suneja
>> >> 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.
>> >> 
>> >> 
>> >> "KJK"  wrote in message 
>> >> news:234F2B7F-BA95-41C3-A3B9-48EFB3A118B5@microsoft.com...
>> >> >I have several questions in regards to CCR Clustering.
>> >> >
>> >> > 1. I am planning on dropping the quorum(File-Witness Share) on one of my 
>> >> > Hub
>> >> > transport servers. If the hub Transport server were to go down could the
>> >> > cluster fail over?
>> >> 
>> >> No, the cluster would not failover if the FSW wasn't available.
>> >> 
>> >> >
>> >> > 2. If the Quorum were to go down would the active Exchange Node be down as
>> >> > well or just the Cluster operations?
>> >> 
>> >> Using a Majority Node Set quorum with a File Share Witness, each node has a 
>> >> local copy of the quorum, in addition to the FSW having that information. 
>> >> The quorum doesn't really go down in this case. If the FSW is unavailable, 
>> >> the cluster is not impacted as long as both nodes are available. The FSW is 
>> >> required for automatic failovers.
>> >> 
>> >> >
>> >> > 3. If the Hub Transport server were down that was holding the FWS would it
>> >> > be possible to form a new FWS on another server? Is this a difficult
>> >> > operation?
>> >> 
>> >> Fairly simple to recreate the FSW on another server - it's the same 
>> >> procedure you used to create the original FSW, doesn't take long, and can be 
>> >> scripted.
>> >> 
>> >> >
>> >> > Thanks. 
>> >> 
>> >> 
>>
date: Thu, 24 Apr 2008 12:32:13 -0400   author:   Andy David {MVP}

Re: CCR Clustering Questions   
On Thu, 24 Apr 2008 12:32:13 -0400, Andy David {MVP}
 wrote:

>On Thu, 24 Apr 2008 09:19:00 -0700, KJK
> wrote:
>
>>Thats a excellent article. Glad I saw that.
>>
>>BUT, I am still wondering if failover is possible if the FSW is unavailable?
>
>No, thats why you have to create a new one and force quorum.

( Im assuming a data center loss scenario here - otherwise simply
create a new FSW if the orig one is not avail anymore)


>
>>
>>"Andy David {MVP}" wrote:
>>
>>> On Thu, 24 Apr 2008 07:41:13 -0700, KJK
>>>  wrote:
>>> 
>>> >Just one further question.
>>> >
>>> >On point 2, you wrote the FSW is necessary for automatic failovers.
>>> >
>>> >If the FSW was unavailable would it be possible to do a manual failover or 
>>> >failback?
>>> 
>>> Check the latest guidance on what to do if the FSW is unavail:
>>> 
>>> http://msexchangeteam.com/archive/2008/04/03/448615.aspx
>>> 
>>> 
>>> >
>>> >thanks again.
>>> >
>>> >"Bharat Suneja [MSFT]" wrote:
>>> >
>>> >> Responses inline.
>>> >> 
>>> >> -- 
>>> >> Bharat Suneja
>>> >> 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.
>>> >> 
>>> >> 
>>> >> "KJK"  wrote in message 
>>> >> news:234F2B7F-BA95-41C3-A3B9-48EFB3A118B5@microsoft.com...
>>> >> >I have several questions in regards to CCR Clustering.
>>> >> >
>>> >> > 1. I am planning on dropping the quorum(File-Witness Share) on one of my 
>>> >> > Hub
>>> >> > transport servers. If the hub Transport server were to go down could the
>>> >> > cluster fail over?
>>> >> 
>>> >> No, the cluster would not failover if the FSW wasn't available.
>>> >> 
>>> >> >
>>> >> > 2. If the Quorum were to go down would the active Exchange Node be down as
>>> >> > well or just the Cluster operations?
>>> >> 
>>> >> Using a Majority Node Set quorum with a File Share Witness, each node has a 
>>> >> local copy of the quorum, in addition to the FSW having that information. 
>>> >> The quorum doesn't really go down in this case. If the FSW is unavailable, 
>>> >> the cluster is not impacted as long as both nodes are available. The FSW is 
>>> >> required for automatic failovers.
>>> >> 
>>> >> >
>>> >> > 3. If the Hub Transport server were down that was holding the FWS would it
>>> >> > be possible to form a new FWS on another server? Is this a difficult
>>> >> > operation?
>>> >> 
>>> >> Fairly simple to recreate the FSW on another server - it's the same 
>>> >> procedure you used to create the original FSW, doesn't take long, and can be 
>>> >> scripted.
>>> >> 
>>> >> >
>>> >> > Thanks. 
>>> >> 
>>> >> 
>>>
date: Thu, 24 Apr 2008 12:46:01 -0400   author:   Andy David {MVP}

Re: CCR Clustering Questions   
Excellent thanks. 

"Andy David {MVP}" wrote:

> On Thu, 24 Apr 2008 12:32:13 -0400, Andy David {MVP}
>  wrote:
> 
> >On Thu, 24 Apr 2008 09:19:00 -0700, KJK
> > wrote:
> >
> >>Thats a excellent article. Glad I saw that.
> >>
> >>BUT, I am still wondering if failover is possible if the FSW is unavailable?
> >
> >No, thats why you have to create a new one and force quorum.
> 
> ( Im assuming a data center loss scenario here - otherwise simply
> create a new FSW if the orig one is not avail anymore)
> 
> 
> >
> >>
> >>"Andy David {MVP}" wrote:
> >>
> >>> On Thu, 24 Apr 2008 07:41:13 -0700, KJK
> >>>  wrote:
> >>> 
> >>> >Just one further question.
> >>> >
> >>> >On point 2, you wrote the FSW is necessary for automatic failovers.
> >>> >
> >>> >If the FSW was unavailable would it be possible to do a manual failover or 
> >>> >failback?
> >>> 
> >>> Check the latest guidance on what to do if the FSW is unavail:
> >>> 
> >>> http://msexchangeteam.com/archive/2008/04/03/448615.aspx
> >>> 
> >>> 
> >>> >
> >>> >thanks again.
> >>> >
> >>> >"Bharat Suneja [MSFT]" wrote:
> >>> >
> >>> >> Responses inline.
> >>> >> 
> >>> >> -- 
> >>> >> Bharat Suneja
> >>> >> 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.
> >>> >> 
> >>> >> 
> >>> >> "KJK"  wrote in message 
> >>> >> news:234F2B7F-BA95-41C3-A3B9-48EFB3A118B5@microsoft.com...
> >>> >> >I have several questions in regards to CCR Clustering.
> >>> >> >
> >>> >> > 1. I am planning on dropping the quorum(File-Witness Share) on one of my 
> >>> >> > Hub
> >>> >> > transport servers. If the hub Transport server were to go down could the
> >>> >> > cluster fail over?
> >>> >> 
> >>> >> No, the cluster would not failover if the FSW wasn't available.
> >>> >> 
> >>> >> >
> >>> >> > 2. If the Quorum were to go down would the active Exchange Node be down as
> >>> >> > well or just the Cluster operations?
> >>> >> 
> >>> >> Using a Majority Node Set quorum with a File Share Witness, each node has a 
> >>> >> local copy of the quorum, in addition to the FSW having that information. 
> >>> >> The quorum doesn't really go down in this case. If the FSW is unavailable, 
> >>> >> the cluster is not impacted as long as both nodes are available. The FSW is 
> >>> >> required for automatic failovers.
> >>> >> 
> >>> >> >
> >>> >> > 3. If the Hub Transport server were down that was holding the FWS would it
> >>> >> > be possible to form a new FWS on another server? Is this a difficult
> >>> >> > operation?
> >>> >> 
> >>> >> Fairly simple to recreate the FSW on another server - it's the same 
> >>> >> procedure you used to create the original FSW, doesn't take long, and can be 
> >>> >> scripted.
> >>> >> 
> >>> >> >
> >>> >> > Thanks. 
> >>> >> 
> >>> >> 
> >>> 
>
date: Thu, 24 Apr 2008 09:56:06 -0700   author:   KJK

Re: CCR Clustering Questions   
"KJK"  wrote in message 
news:21DA559B-0911-4CC9-ADEB-9668E4F41116@microsoft.com...
> Thats a excellent article. Glad I saw that.
>
> BUT, I am still wondering if failover is possible if the FSW is 
> unavailable?

A failover is not possible as there would not be a majority. However, you 
can do a manual move group without any problems.


-- 
Russ Kaufmann, MCSE, MCT, MCITP, MCTS, and other stuff
Microsoft
Premier Field Engineer - Exchange
date: Thu, 24 Apr 2008 12:03:00 -0500   author:   Russ Kaufmann [MSFT]

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