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DOC-12402 Edit 2 XDCR Compression Type Values #3849

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Aug 13, 2025
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DOC-12402 Edit 2 XDCR Compression Type Values #3849

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rao-shwe Aug 11, 2025
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18 changes: 10 additions & 8 deletions modules/xdcr-reference/pages/xdcr-advanced-settings.adoc
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Expand Up @@ -117,15 +117,17 @@ For more information, see xref:learn:clusters-and-availability/xdcr-conflict-res
[#xdcr-compression-type-values]
== XDCR Compression-Type Values

The _XDCR Compression Type_ setting can be either `Auto` or `None`:
The XDCR Compression Type setting can be either `Auto` or `None`.

* If `Auto` is specified, data compression _is_ attempted during replication, given that the target cluster is running Couchbase Server 5.5 or later.
If the target cluster is _not_ running Couchbase Server 5.5 or later, data compression is _not_ attempted during replication.
(Note that the consequences of specifying `Auto` as the value of `compressionType` are thereby determined irrespective of whether the data resides in the source bucket in compressed or uncompressed form.)
* When `Auto` is specified, data compression is attempted during replication only if the target cluster is running Couchbase Server 5.5 or a later version.
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NOTE: When `compressionType` is set to `Auto`, the behavior remains the same whether the data in the source bucket is compressed or uncompressed.

* If `None` is specified, data compression is not attempted during replication if the target cluster is not running Couchbase Server 5.5 or later.
If the target cluster _is_ running Couchbase Server 5.5 or later:
* When `None` is specified, data compression is not attempted during replication if the target cluster is not running Couchbase Server 5.5 or a later version.
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However, if the target cluster is running Couchbase Server 5.5 or a later version, and:

** If the data resides in the source bucket in uncompressed form, data compression is _not_ attempted.
** If the data resides in the source bucket in uncompressed form, then the data compression is not attempted.

** If the data resides in the source bucket in _compressed_ form, data compression _is_ attempted.
** If the data resides in the source bucket in compressed form, then the data compression is attempted.
The data compression is attempted means that the data is snappy-compressed only if the encoded size is lesser than the raw size.