Service Level for Yandex Managed Databases

This document defines Service Levels for Yandex Managed Service (for PostgreSQL), Yandex Managed Service (for ClickHouse), Yandex Managed Service (for MongoDB), Yandex Managed Service (for Redis™), Yandex Managed Service (for MySQL®), Yandex Managed Service (for SQL Server™), Yandex Managed Service (for Elasticsearch) (collectively, “Service”) and is an integral part of Yandex.Cloud Customer Agreement (“Agreement”) and SLA available at: https://yandex.com/legal/cloud_sla. Capitalized terms used herein but not defined herein shall have the meanings set forth in Agreement and Linked Documents.

Service Level:

DB Cluster, read

99.99%

DB Cluster, write

99.95%

Compensation Amount:

Availability of DB Cluster – read:

Service Uptime Percentage in Accrual Period Compensation, % of Service Fee for Service in Accrual Period
< 99.99%-99.00% 10.0%
< 99.00%-90.00% 15.0%
less than 90.00% 30.0%

Availability of DB Cluster – write:

Service Uptime Percentage in Accrual Period Compensation, % of Service Fee for Service in Accrual Period
< 99.95%-99.00% 10.0%
< 99.00%-90.00% 15.0%
less than 90.00% 30.0%

Definition of Service Unavailability:

Unavailability of Yandex Managed Service (for PostgreSQL), Yandex Managed Service for MySQL®, Yandex Managed Service for SQL Server™ shall be defined as two or more DB Hosts placed in different Availability Zones for reading or writing via supported clients.

Unavailability of Yandex Managed Service for ClickHouse shall be defined as follows:

  • two or more DB Hosts placed in different Availability Zones for reading or writing via supported clients, and/or
  • unavailability of Shard placed in two or more DB Hosts which are located in different Availability Zones for reading or writing via supported clients while using Shard.

Unavailability of Yandex Managed Service for MongoDB shall be defined as follows:

  • unavailability DB Cluster which consists of three and more DB Hosts placed in different Availability Zones for reading or writing via supported clients, and/or
  • unavailability of Shard placed in three or more DB Hosts which are located in different Availability Zones for reading or writing via supported clients while using Shard.

Unavailability of Yandex Managed Service for Redis™ shall be defined as:

  • unavailability DB Cluster which consists of three and more DB Hosts placed in different Availability Zones for reading or writing via supported clients, and/or
  • unavailability of Shard placed in three or more DB Hosts which are located in different Availability Zones for reading or writing via supported clients while using Shard.

Unavailability of Yandex Managed Service for Elasticsearch shall be defined as:

  • unavailability DB Cluster which consists of three and more DB Hosts placed in different Availability Zones for reading or writing via supported clients when replication is enabled for indexes.

The list of supported clients for a specific type of DBMS can be found in technical documents of Service posted on Site.

Definitions

Shard — the part of DB Cluster placed in one or several DB Hosts for load balancing.The process of forming a Shard is called sharding.

 

Elasticsearch is a registered trademark of Elasticsearch BV in the United States and / or other countries.

_______________________

Yandex Services AG

Web address: https://yandex.com/legal/cloud_sla_mdb

Date of placement: April 12, 2021

Effective date: April 13, 2021

Previous version of the document: https://yandex.com/legal/adv_cloud_sla_mdb/18122020

Previous version of the document: https://yandex.com/legal/adv_cloud_sla_mdb/23042019