> For the complete documentation index, see [llms.txt](https://docs.mydbsync.com/cloud-replication-main/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mydbsync.com/cloud-replication-main/v7/bigdata-support/archive-and-non-archive-mode.md).

# Archive and Non-archive Mode

* ***Archive mode of replication*** inserts a new record in Cassandra when the existing record is updated in Salesforce. This feature helps to maintain historical record.
* ***Non Archive mode of replication*** updates the existing record in Cassandra when the existing record is updated in Salesforce.

#### Switching between Archive and Non Archive mode: <a href="#archiveandnonarchivemode-switchingbetweenarchiveandnonarchivemode" id="archiveandnonarchivemode-switchingbetweenarchiveandnonarchivemode"></a>

To identify and change the mode of the replication, the below mentioned steps must be followed.

* Locate the properties file ***config.properties*** by accessing the Cassandra folder saved in the below path

&#x20;         Installation Folder (DBSyncCReplSF3) > dbsync-repl > WEB-INF > db > Cassandra

![](https://help.mydbsync.com/docs/download/attachments/53903679/image2021-6-9_21-21-22.png?version=1\&modificationDate=1623253922000\&api=v2)

* Open the file config.properites to indentify the command ***cassandra.archive=true*** or ***cassandra.archive=false***

![](https://help.mydbsync.com/docs/download/attachments/53903679/image2021-6-9_21-21-34.png?version=1\&modificationDate=1623253921000\&api=v2)

* ***cassandra.archive=true*** is for Archive mode of replication and ***cassandra.archive=false*** is for Non Archive mode of replication. Based on the requirement true or false must be used before running the replication in DBSync Replication tool.