Service Overview

Block Storage is a high-performance storage that stores data in block units arranged in a fixed size and layout.
Suitable for large-scale, high-performance requirements such as databases and mail servers, and users can directly allocate volumes on the server for use.

Features

• Large Volume Provisioning: OS configuration volumes are created with at least the minimum size per image and can be expanded up to 12 TB, and data storage volumes outside the OS can be created and expanded from a minimum of 8 GB to a maximum of 12 TB. Capacity expansion is performed reliably while online.
• High-Performance Full SSD Offering: It provides high durability and availability based on redundant controllers and Disk Array RAID. Since a Full SSD disk is provided by default, it is suitable for high-speed data processing tasks such as database workloads.
• Snapshot Backup: Data that has been modified or deleted can be recovered using the image snapshot feature. The user selects a snapshot created at the desired point in time from the list and performs the recovery.

Service Architecture Diagram

Provided features

Block Storage provides the following features.

• Volume Name: Users can set or modify the name for each volume.
• Capacity: Volumes can be created with sizes from a minimum of 8 GB up to a maximum of 12 TB, and can be expanded while in use. The OS default volume can be created with at least the minimum size for each image.
• Connection Server: You can select a Virtual Server to connect or disconnect.
  • Multi-Server Connection (Multi Attach): Connect to two or more servers, with no limit on the number of servers per volume, and a Virtual Server can connect up to 26 volumes.
• Encryption: All volumes of Block Storage have AES-256 algorithm encryption applied by default, and when a volume is of HDD/SSD_KMS disk type, additional in‑transit encryption is provided for the segment between the instance and the Block Storage attached to the instance.
• Snapshot: The image snapshot feature allows recovery of modified or deleted data. Users select a snapshot created at the desired point in time from the list to restore it.
• Volume Transfer: You can transfer a volume to another Account using the volume transfer feature.
• Monitoring: IOPS, Latency, Throughput, etc. monitoring information can be viewed through the Cloud Monitoring service.

Component

You can create a volume by entering the capacity and selecting the disk type according to the user’s service scale and performance requirements. When using the snapshot feature, you can restore data to the desired point in time.

Volume

A volume (Volume) is the basic creation unit of the Block Storage service and is used as data storage space. Users select a name, capacity, and disk type to create a volume, then attach it to a Virtual Server for use.
The volume name generation rules are as follows.

snapshot

A snapshot (Snapshot) is an image backup of a volume at a specific point in time. Users can view the snapshot name and creation timestamp in the snapshot list to select the snapshot they want to restore, and through that snapshot they can recover data that was changed or deleted.
The following considerations apply when using snapshots.

Preliminary Service

This is a list of services that must be pre-configured before creating the service. Please refer to the guide provided for each service for details and prepare in advance.