This topic describes how to enable the cold data archiving feature and how to view information about the cold data archived in OSS.
Scope
Archiving to CSV format
For Cluster Edition clusters, one of the following kernel versions is required:
MySQL 8.0.1 revision 8.0.1.1.47 or later.
MySQL 8.0.2 revision 8.0.2.2.10 or later.
For Multi-master Cluster (Limitless) Edition clusters, kernel version 8.0.1.0.13 or later is required.
Archiving to ORC format
For Cluster Edition clusters, revision version 8.0.2.2.30 or later is required.
For Multi-master Cluster (Limitless) Edition clusters, revision version 8.0.2.2.30 or later is required.
Limitations
You cannot backup or restore cold data tables in OSS. Cold data tables in OSS are skipped by default when a cluster is restored from backups. For more information, see Overview.
You cannot access cold data tables in OSS from a secondary cluster in a GDN. For more information, see Add and manage a secondary cluster.
Enable cold data archiving
Log on to the PolarDB console.
In the navigation pane on the left, click Clusters.
In the upper-left corner, select the region in which the cluster that you want to manage is deployed.
On the Clusters page, click the name of the cluster.
In the navigation pane on the left, choose .
On the Data Archive (Cold Data) tab, click Enable.
View information about the cold data archived in OSS
After you enable the cold data archiving feature, you can view information about the cold data archived in OSS buckets on the Cold Data Archiving page, including the amount of archived cold data and information about the archived databases and tables.
After you enable the cold data archiving feature, you cannot disable it. If the amount of archived cold data displayed in the console is 0, no additional fees are incurred.
