Countries, regions, availability zones and pools
With Servercore's products and services, you can create an infrastructure with all fault tolerance and security requirements taken into account.
Servercore's infrastructure is deployed in four countries and is divided into 6 regions, 9 availability zones and 22 pools.
To see the availability of Servercore products and services in different regions, please visit availability matrices.
Country
Country (example: Россия) is one or more regions that are placed within a single state.
In most cases, the division into countries has no effect on anything and the main division of infrastructure is at the level of the regions. In some cases, regions in one country are separated from regions in other countries:
- when using global router you cannot configure network connectivity between products that are hosted in different countries. You can customize the connectivity of products and services only between different regions within the same country;
- in object storage different for each country domains, а TLS (SSL) certificates country-specific — the certificate only works for containers located in the region of the certificate country.
Region
Region (example: Saint Petersburg) is a number of data centers, Servercore and partner data centers, which are located within the agglomeration of a large city. Data centers in the same region are connected by a fiber optic link with data redundancy, and minimal signal delay is ensured between data centers within a region.
Each region is completely isolated from the others: separate connection to power lines, autonomous power and cooling sources, dedicated communication channels.
Servercore provides connectivity between regions through redundant high-capacity communication channels.
To host your application, we recommend choosing the region closest to your users as the main region. You can deploy resources in different regions — then the infrastructure will be able to survive possible ISP failures, such as internet outages at the border level, natural disasters and emergencies with minimal down time.
To see the list of regions, please see the table Servercore Infrastructure.
Accessibility zone
Accessibility zone (example: Зона доступности 1) is one or more data centers within the same region. Each data center is equipped with autonomous power and cooling sources and its own redundant ultra-low latency communication channel.
Servercore backs up all critical elements of the system in the availability zone: power supply, air conditioning, network infrastructure. Each availability zone is provided with round-the-clock physical security and monitoring. Equipment maintenance operations are not performed simultaneously in multiple Availability Zones in the same region.
We recommend reserving critical parts of your infrastructure in multiple Availability Zones. Availability zones do not have a single point of failure — only the point of failure for the entire region. This will protect your system in the event of a failure in one of the zones, such as a power outage in the data center, fire, or weather events.
To see the list of accessibility zones, please see the table Servercore Infrastructure.
Poole
Pool (example: ru-9, SPB-4) — part of the infrastructure in one data center. In each data center and, accordingly, in the availability zone there are several pools. Each pool is isolated from hardware and software failures in other pools.
Network connectivity within a pool is provided by an L2 connection. To configure connectivity between pools, you can use Servercore global router.
Placing infrastructure in multiple pools protects against network hardware and software failures (e.g., network hardware failure or power failure), reduces the likelihood of data loss and service downtime. The single point of failure of pools is failures in the availability zone.
Pools are divided into pool segments (example: ru-2a, ru-8a) — groups of equipment in different racks within the same data center.
To see a list of pools and segments, see the table below Servercore Infrastructure.
Increase fault tolerance
You can improve infrastructure resiliency at the region, availability zone, pool, and additionally at the server level:
- for a dedicated server-- move the server to another rack;
- cloud server — put servers on different hosts in the accommodation group.
Servercore Infrastructure
Russia
Uzbekistan
Kazakhstan
Kenya
St. Petersburg
Moscow
Novosibirsk
Tashkent
Almaty
Nairobi