Dedicated Block Storage Cluster is a service that provides block storage resources in clusters. Each dedicated block storage cluster is physically isolated and allows its owner exclusive access to its resources. You can use dedicated block storage clusters to improve the security and O&M efficiency of your business data storage.
Features
Dedicated block storage clusters are physically isolated from public block storage clusters. The owner of each dedicated block storage cluster has exclusive access to all resources in the cluster. Dedicated block storage clusters are physically isolated from public block storage clusters. The owner of each dedicated block storage cluster has exclusive access to all resources in the cluster. Dedicated Block Storage Cluster provides a monitoring feature that allows you to view cluster information such as cluster states and capacities in real time.
Unlike public block storage clusters, dedicated block storage clusters offer physical isolation and exclusive resources. After you purchase a dedicated block storage cluster, you can create dedicated disks in the cluster. Dedicated disks provide the same features as their public counterparts and grant you exclusive access to their physical resources. You can use the Elastic Compute Service (ECS) console or call API operations to manage disks in dedicated block storage clusters.
- The disks can be used as system disks on ECS instances. You must enable Dedicated Block Storage Cluster when you create ECS instances before you can attach disks in dedicated block storage clusters to the instances.
- The disks can be used as data disks on ECS instances. You can enable Dedicated Block Storage Cluster and specify a dedicated block storage cluster when you add data disks during the creation of an ECS instance. The added data disks are all created in the specified dedicated block storage cluster. Alternatively, you can manually create disks in a dedicated block storage cluster. The created disks can be attached only as data disks to ECS instances within the same zone as the cluster, regardless of whether the instances reside on dedicated hosts.
Use scenarios
Resources in dedicated block storage clusters are physically isolated from those in public block storage clusters. Each dedicated block storage cluster is dedicated to its owner. Dedicated block storage clusters are suitable for industries or sectors that require high data security, such as finance, healthcare, and public service sector.
Billing
For information about the billing of dedicated block storage clusters, see Billing.
Limits
The following table describes the limits of Dedicated Block Storage Cluster.
| Item | Limits |
|---|---|
| Cluster capacity |
Note If the capacity of a dedicated block storage cluster is less than 576 TiB, the maximum
throughput supported per TiB does not exceed 52 MB/s. If the capacity of a dedicated
block storage cluster is greater than 576 TiB, the maximum throughput supported per
TiB does not exceed 26 MB/s.
|
| Disk category | Dedicated block storage clusters of different performance types support different
disk categories.
For more information about ESSDs, see ESSDs. Note The configurations of ESSDs in dedicated block storage clusters cannot be changed.
|
Lifecycle management
You can perform the following operations:
- Create a dedicated block storage cluster.
Dedicated block storage clusters are classified into the basic and performance types. Select a cluster type that is appropriate to your business requirements. For more information about how to create a dedicated block storage cluster, see Create a dedicated block storage cluster.
- Monitor a dedicated block storage cluster.
After a dedicated block storage cluster is created, you can view its information such as state, capacity, and dedicated disks. For more information, see View the information of a dedicated block storage cluster.
- Create disks in a dedicated block storage cluster.
Dedicated block storage clusters of different performance types support different disk categories. System disks and data disks are created in different ways in dedicated block storage clusters. For more information, see Create disks in a dedicated block storage cluster.