Elastic Block Storage is a block-level data storage service attached to Elastic Compute Service (ECS) instances and features low latency, persistence, and high reliability. Block Storage enables automatic replication within the same zone to avoid data loss caused by hardware failures and guarantee the stability and continuity of your workloads. You can manage Block Storage as you manage disks. For example, you can partition Block Storage devices that are attached to ECS instances and create file systems for Block Storage devices. You can also use Block Storage devices to achieve data persistence.
Benefits
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High Reliability
Deploys disks in a distributed architecture to guarantee 99.9999999% data reliability that is much higher than that of physical disks.
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High Performance
Provides a single disk with the random read/write performance that reaches up to 1,000,000 input/output operations per second (IOPS). Each disk achieves 4,000 MB/s sequential throughput. You can select required disks to serve your workloads.
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Scalability
Supports storage capacities of up to 32 TiB on each disk and allows disk scaling without service disruption.
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Security
Enables simple and efficient data backup based on snapshots. You can meet industry compliance requirements by using the Bring Your Own Key (BYOK) model to encrypt data in disks.
Features
Online Scaling
Scales out disks without service disruption. You do not need to restart ECS instances or detach disks during scaling.
Data Protection
Creates snapshots for disks to support data protection, data recovery, image customization, and application disaster recovery.
Data Encryption
Supports data encryption and eliminates the need for users to build or maintain individual key management systems.
I/O Isolation
Enables storage input/output (I/O) isolation for enterprise-level instances. The connection between each ECS instance and all associated disks is assigned dedicated bandwidth. This feature bypasses storage I/O contention among different ECS instances and guarantees stable and consistent storage I/O performance.
Scenarios
Relational Databases
Support for user-created NoSQL databases deployed on ECS instances to achieve high reliability for read/write requests
Based on new-generation software and hardware technologies and network architectures, ESSDs provide random read/write latency of hundreds of microseconds. The random read/write performance for each disk reaches up to 1,000,000 IOPS. ESSDs are the ideal storage option for user-created NoSQL databases deployed on ECS instances.
Support for Core Features of NoSQL Database Storage
Optimized Data Persistence
Deploys ESSDs in a distributed storage architecture with data persistence much higher than local SSD disks. ESSDs are ideal for persistent data storage.
Stable Performance and Low Latency
Provides low-latency random access to databases. ESSDs support random read/write latency of hundreds of microseconds to maximize read/write performance of databases.
Online Performance Scaling
Offers multiple ESSD performance levels, including PL1, PL2, and PL3. The random read/write performance reaches up to 1,000,000 IOPS. You can manage ESSD scaling without service disruption to serve your increasing workloads.
Data Encryption
Enables data encryption at rest in ESSDs. You can use Alibaba Cloud KMS to simplify key management and upload custom keys to encrypt data in the cloud.
Enterprise-level Application Software
Support for high-availability persistence required by ECS-based enterprise-level applications, such as SAP, Oracle, and Microsoft Exchange
Offers multiple disk specifications to guarantee 99.9999999% data reliability and enables data persistence to secure data in key workloads.
Support for Key Storage Features of Enterprise-level Applications
High Reliability
Deploys ESSDs in a distributed storage architecture with data persistence much higher than local SSD disks. ESSDs are ideal for persistent data storage.
Data Encryption
Enables data encryption at rest in ESSDs. You can use Alibaba Cloud KMS to simplify key management and upload custom keys to encrypt data in the cloud.
Online Performance Scaling
Offers multiple ESSD performance levels, including PL1, PL2, and PL3. You can manage ESSD scaling without service disruption to serve your increasing workloads.
Online Capacity Scaling
Allows online scaling without service disruption. You can increase the storage capacity to the upper limit of 32 TiB for each disk.
Data Backup
Creates backups by using disk snapshots based on automatic snapshot policies and allows you to replicate snapshots to different regions.
NoSQL Databases
Support for user-created NoSQL databases deployed on ECS instances to achieve high reliability for read/write requests
Based on new-generation software and hardware technologies and network architectures, ESSDs provide random read/write latency of hundreds of microseconds. The random read/write performance for each disk reaches up to 1,000,000 IOPS. ESSDs are the ideal storage option for user-created NoSQL databases deployed on ECS instances.
Support for Core Features of NoSQL Database Storage
Optimized Data Persistence
Deploys ESSDs in a distributed storage architecture with data persistence much higher than local SSD disks. ESSDs are ideal for persistent data storage.
Stable Performance and Low Latency
Provides low-latency random access to databases. ESSDs support random read/write latency of hundreds of microseconds to maximize read/write performance of databases.
Online Performance Scaling
Offers multiple ESSD performance levels, including PL1, PL2, and PL3. The random read/write performance reaches up to 1,000,000 IOPS. You can manage ESSD scaling without service disruption to serve your increasing workloads.
Data Encryption
Enables data encryption at rest in ESSDs. You can use Alibaba Cloud KMS to simplify key management and upload custom keys to encrypt data in the cloud.
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