Dedicated Block Storage Cluster provides physically isolated block storage with exclusive resources to improve data security and O&M efficiency.
Features
Dedicated Block Storage Cluster is available in the following regions: China (Hangzhou), China (Shanghai), China (Beijing), China (Zhangjiakou), China (Ulanqab), China (Shenzhen), China (Heyuan), Indonesia (Jakarta), Germany (Frankfurt), and China South 1 Finance.
Dedicated block storage clusters are physically isolated from public block storage clusters. The cluster owner has exclusive access to all resources and does not share physical resources with other users. You can monitor cluster status and capacities in real time.
After you purchase a dedicated block storage cluster, you can create dedicated disks in the cluster. Dedicated disks provide the same features as public disks but grant you exclusive access to their physical resources. You can use the ECS console or call API operations to manage these disks.
Disks in dedicated block storage clusters serve as system disks or data disks:
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To use disks as system disks, enable Dedicated Block Storage Cluster when you create ECS instances. See Create a system disk in a dedicated cluster.
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To use disks as data disks, enable Dedicated Block Storage Cluster and specify a cluster when you add data disks during ECS instance creation. Alternatively, create disks separately in a dedicated cluster. These disks can be attached only to ECS instances in the same zone, regardless of whether the instances reside on dedicated hosts. See Create a data disk in a dedicated cluster.
Use cases
Dedicated block storage clusters are suitable for industries that require high data security, such as finance, healthcare, and public service sectors.
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Basic dedicated block storage cluster
Designed for general-purpose data storage scenarios, such as file sharing, backup, and restoration. Provides data redundancy and backup for reliable data protection. Suitable for applications with typical workloads.
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Performance dedicated block storage cluster
Designed for high-performance data storage scenarios, such as databases, virtualization, and cloud computing. Offers higher storage performance, advanced data protection, high-speed network connectivity, and data caching. Suitable for high loads and complex workloads.
Limitations
The following table describes the limitations of Dedicated Block Storage Cluster.
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Item |
Limits |
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Cluster capacity |
Note
If the cluster capacity is less than 576 TiB, the maximum throughput per TiB is 52 MB/s. If the cluster capacity is greater than 576 TiB, the maximum throughput per TiB is 26 MB/s. |
|
Disk category |
Different performance types support different disk categories.
See ESSDs. Note
You cannot modify the configurations of ESSDs in dedicated block storage clusters. |
Lifecycle management
Create a dedicated block storage cluster
Dedicated block storage clusters have basic and performance types. Select a type based on your requirements. See Create a dedicated block storage cluster.
After a cluster is created, you can view its status, capacity, and dedicated disks. See Related operations.
Create disks in a dedicated block storage cluster
Different performance types support different disk categories, and system disks and data disks are created differently. See Create disks in a Dedicated Block Storage Cluster.
Migrate disks in a dedicated block storage cluster
Disks can be migrated into, out of, or between dedicated block storage clusters. See Migrate disks into or out of a dedicated block storage cluster.
Extend the capacity of a dedicated block storage cluster
If your cluster has insufficient remaining capacity and has not reached the maximum of 2,280 TiB, you can extend it. See Resize a dedicated block storage cluster.