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date: Tue, 11 Mar 2008 10:44:50 +0800,
group: microsoft.public.exchange.clustering
back
Re: Windows Server 2008 Cluster
Planning for Cluster Continuous Replication
http://technet.microsoft.com/en-us/library/bb123996(EXCHG.80).aspx
"All networks that are used to replicate transaction logs must provide
adequate bandwidth and sufficiently low latency to copy the log files in a
timely manner, so that whenever possible, there is no backlog of log files."
Exchange doesn't test the bandwidth between two nodes pre or post
installation, so there's no "minimum bandwidth" requirement.
Any product that does replication at the application/file/block layer will
incurr these bandwidth costs. In case of CCR, if you don't have adequate
bandwidth, the replica will be behind the active copy of the Storage Group
on the active node. If it's too far behind, you will face issues with
failovers or data loss.
--
Bharat Suneja
MVP - Exchange
www.zenprise.com
NEW blog location:
exchangepedia.com/blog
--------------------------------
"Jammy-MVP" <Jammylo@ms4.hinet.net.NOSPAM> wrote in message
news:E9C312AA-4BDE-4764-AC87-2C6A66FB48CE@microsoft.com...
> No minimus bandwidth requirements?
> If no minimus requirements it'll be challenge by my customer.
> Have any official DOC for this topic?
>
> BR,
> Jammy
>
> "Bharat Suneja [MVP]" wrote in message
> news:OiHMJG0gIHA.1164@TK2MSFTNGP02.phx.gbl...
>> The bandwidth requirements for replication are no different than CCR
>> nodes on the same subnet/in the same datacenter - it depends on the
>> volume of email.
>>
>> --
>> Bharat Suneja
>> MVP - Exchange
>> www.zenprise.com
>> NEW blog location:
>> exchangepedia.com/blog
>> ----------------------------
>>
>>
>>
>> "Jammy-MVP" <Jammylo@ms4.hinet.net.NOSPAM> wrote in message
>> news:137834EB-C301-4E84-BA7E-D305C83DFE47@microsoft.com...
>>> I'm reading the
>>> article(http://msexchangeteam.com/archive/2008/03/05/448338.aspx) by
>>> Scott Schnoll.
>>> I'm curious about windows 2008 multi-subnet failover cluster bandwidth
>>> requirement.
>>> If deploy CCR with Windows 2008 multi-subnet cluster, how many bandwidth
>>> is requirement between 2 CCR Node?
>>>
>>> BR,
>>>
>>> Jammy
>>
>
date: Tue, 11 Mar 2008 08:26:42 -0700
author: Bharat Suneja [MVP]
Re: Windows Server 2008 Cluster
I want say thanks for all your's reply.
Jammy
"Bharat Suneja [MVP]" wrote in message
news:u4BoRx4gIHA.1208@TK2MSFTNGP03.phx.gbl...
> Planning for Cluster Continuous Replication
> http://technet.microsoft.com/en-us/library/bb123996(EXCHG.80).aspx
>
> "All networks that are used to replicate transaction logs must provide
> adequate bandwidth and sufficiently low latency to copy the log files in a
> timely manner, so that whenever possible, there is no backlog of log
> files."
>
> Exchange doesn't test the bandwidth between two nodes pre or post
> installation, so there's no "minimum bandwidth" requirement.
>
> Any product that does replication at the application/file/block layer will
> incurr these bandwidth costs. In case of CCR, if you don't have adequate
> bandwidth, the replica will be behind the active copy of the Storage Group
> on the active node. If it's too far behind, you will face issues with
> failovers or data loss.
> --
> Bharat Suneja
> MVP - Exchange
> www.zenprise.com
> NEW blog location:
> exchangepedia.com/blog
> --------------------------------
>
>
>
> "Jammy-MVP" <Jammylo@ms4.hinet.net.NOSPAM> wrote in message
> news:E9C312AA-4BDE-4764-AC87-2C6A66FB48CE@microsoft.com...
>> No minimus bandwidth requirements?
>> If no minimus requirements it'll be challenge by my customer.
>> Have any official DOC for this topic?
>>
>> BR,
>> Jammy
>>
>> "Bharat Suneja [MVP]" wrote in message
>> news:OiHMJG0gIHA.1164@TK2MSFTNGP02.phx.gbl...
>>> The bandwidth requirements for replication are no different than CCR
>>> nodes on the same subnet/in the same datacenter - it depends on the
>>> volume of email.
>>>
>>> --
>>> Bharat Suneja
>>> MVP - Exchange
>>> www.zenprise.com
>>> NEW blog location:
>>> exchangepedia.com/blog
>>> ----------------------------
>>>
>>>
>>>
>>> "Jammy-MVP" <Jammylo@ms4.hinet.net.NOSPAM> wrote in message
>>> news:137834EB-C301-4E84-BA7E-D305C83DFE47@microsoft.com...
>>>> I'm reading the
>>>> article(http://msexchangeteam.com/archive/2008/03/05/448338.aspx) by
>>>> Scott Schnoll.
>>>> I'm curious about windows 2008 multi-subnet failover cluster bandwidth
>>>> requirement.
>>>> If deploy CCR with Windows 2008 multi-subnet cluster, how many
>>>> bandwidth is requirement between 2 CCR Node?
>>>>
>>>> BR,
>>>>
>>>> Jammy
>>>
>>
>
date: Thu, 13 Mar 2008 13:03:03 +0800
author: Jammy-MVP AM
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