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TanmoyDas-9282 avatar image
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TanmoyDas-9282 asked TanmoyDas-9282 commented

SharePoint 2013 with Always On

Hi Guys,

We are going to set up the Always on with SharePoint 2013. My client wants to know

1) Which sync (Synchronous or Asynchronous) is more efficient and better for SharePoint 2013?
Note: I know not all service application DBS are not compatible for always on.

2) Is there any cons for both type of sync with respect to SharePoint 2013?

office-sharepoint-server-administration
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Any thought guys

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1 Answer

EchoDu-MSFT avatar image
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EchoDu-MSFT answered EchoDu-MSFT commented

Hi anonymous user ,

The primary difference between synchronous replication and asynchronous replication is the way in which data is written to the replica. Most synchronous replication products write data to primary storage and the replica simultaneously. As such, the primary copy and the replica should always remain synchronized.

In contrast, asynchronous replication products copy the data to the replica after the data is already written to the primary storage. Although the replication process may occur in near-real-time, it is more common for replication to occur on a scheduled basis. For instance, write operations may be transmitted to the replica in batches on a periodic basis (for example, every one minute). In case of a fail-over event, some data loss may occur.

  • Asynchronous replication requires substantially less bandwidth than synchronous replication.

  • Asynchronous replication is designed to work over long distances. Since the replication process does not have to occur in real time, asynchronous replication can tolerate some degradation in connectivity.

  • Synchronous replication allows fail-over from primary to secondary data storage to occur nearly instantaneous, to ensure little to no application downtime.

We can't directly express which mode is better, because which mode to use depends on your environment configuration and requirements design. For more information, please see the "Differences between availability modes for an Always On availability group" article.

Thanks,
Echo Du
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Up to 10 attachments (including images) can be used with a maximum of 3.0 MiB each and 30.0 MiB total.

Hi anonymous user ,

Is there anything else I can help with regarding this issue?
You can comment us at any time and we will continue to follow up.

Thanks,
Echo Du

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