High availability overview

Backup and Disaster Recovery Center (BDRC) provides an overview of data high availability to facilitate the efficient management of data redundancy across zones. The Overview of Data High Availability pages for Object Storage Service (OSS) and Tablestore display the numbers of OSS buckets across different storage classes and Tablestore instances that use locally redundant storage (LRS) and zone-redundant storage (ZRS). Additionally, you can easily convert LRS into ZRS for OSS buckets in the BDRC console to enhance data availability and data protection. This topic provides an overview of data high availability in Backup and Disaster Recovery Center, including the supported services, limits, Data Disaster Recovery Screen, and data redundancy conversion.

Support services and limits

You cannot convert data redundancy types for Tablestore instances. For more information, see ZRS.
You can convert the redundancy type of OSS buckets only from LRS into ZRS. After converting to ZRS for a bucket, you cannot switch the redundancy type of the bucket back to LRS. After the redundancy type is converted from LRS into ZRS for a bucket, ZRS billing applies to the bucket. For more information about billing, see Storage fees.
Redundancy type conversion is supported for OSS buckets only in specific regions. For more information, see Change the storage redundancy type of a bucket.

Note

A high availability status is only a reminder of attention to the availability settings of the resource, and does not affect the data protection score that is displayed in the Resource Risk section.

OSS
The statistics show the numbers of OSS buckets across storage classes that use LRS and ZRS. The statistics automatically refresh on a daily basis. You can also click Check All Resource to manually refresh the statistics. You can click the number next to Local-redundancy to redirect to the OSS bucket list in Resource Center. Check OSS buckets that use the LRS redundancy type.
Tablestore
The statistics show the numbers of Tablestore instances that use LRS and ZRS by instance specification. The statistics automatically refresh on a daily basis. You can also click Check All Resource to manually refresh the statistics. You can click the number next to Local-redundancy to redirect to the Tablestore instance list in Resource Center. Check Tablestore instances that use the LRS redundancy type.

Data Disaster Recovery Screen

On the Data Disaster Recovery Screen page, the yellow background color indicates LRS resources, and the white background color indicates ZRS resources.

OSS
Click an OSS bucket in the dashboard to view its data protection risks and high availability status. For a local-redundancy OSS bucket, you can click Go to conversion to switch to the zone-redundant status in Resource Center.
Tablestore
Click a Tablestore instance in the dashboard to view its data protection risks and high availability status.

Resource lists

OSS
By default, the OSS bucket list displays all buckets of your account. You can filter buckets by storage redundancy type in the filter bar on top of the list. The High Availability Status statistics automatically refresh on a daily basis. You can also click Check All Resource to manually refresh the statistics. Redundancy type conversion of OSS buckets is integrated into BDRC. You can directly convert the redundancy type in the BDRC console, without the need to do it in the OSS console. You can convert the redundancy type by using the following steps:
1. In the OSS bucket list, find the bucket for which you want to convert the redundancy type, and click Convert now.
2. In the Convert Redundancy Type from LRS to ZRS panel, click Confirm. In the message that appears, click OK.
3. After the conversion starts, check the task details and status in the High Availability Status column.
  Note
  BDRC automatically refreshes statistics on a daily basis. As a result, buckets whose redundancy type has been switched to the zone-redundant type within the previous 24 hours may still appear in the local-redundancy type. You can click Check All Resource to manually refresh the statistics.
Tablestore
By default, the Tablestore instance list displays all Tablestore instances of your account. You can filter Tablestore instances by storage redundancy type in the filter bar on top of the list. The High Availability Status statistics automatically refresh on a daily basis. You can also click Check All Resource to manually refresh the statistics.