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From Rene Kochen <rene.koc...@emea.schange.com>
Subject Re: Backup solution
Date Fri, 15 Mar 2013 10:12:26 GMT
Thank you. I have a high bandwidth connection. But that also means that
regular repairs on the backup data-center will take a long time.

2013/3/14 Jabbar Azam <ajazam@gmail.com>

> Hello,
>
> If the live data centre disappears restoring the data from the backup is
> going to take ages especially if the data is going from one data centre to
> another, unless you have a high bandwidth connection between data centres
> or you have a small amount of data.
>
> Jabbar Azam
> On 14 Mar 2013 14:31, "Rene Kochen" <rene.kochen@schange.com> wrote:
>
>> Hi all,
>>
>> Is the following a good backup solution.
>>
>> Create two data-centers:
>>
>> - A live data-center with multiple nodes (commodity hardware). Clients
>> connect to this cluster with LOCAL_QUORUM.
>> - A backup data-center with 1 node (with fast SSDs). Clients do not
>> connect to this cluster. Cluster only used for creating and storing
>> snapshots.
>>
>> Advantages:
>>
>> - No snapshots and bulk network I/O (transfer snapshots) needed on the
>> live cluster.
>> - Clients are not slowed down because writes to the backup data-center
>> are async.
>> - On the backup cluster snapshots are made on a regular basis. This again
>> does not affect the live cluster.
>> - The back-up cluster does not need to process client requests/reads, so
>> we need less machines for the backup cluster than the live cluster.
>>
>> Are there any disadvantages with this approach?
>>
>> Thanks!
>>
>

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