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RDS uses Elastic Volume Service (EVS) disks for storage. For details, see Elastic Volume Service Service Overview. The RDS backup data is stored in OBS and does not occupy the database storage space.
Table 1 API overview Type Subtype Description API EVS disk These APIs provide the functions, such as creating disks, deleting disks, and querying disk details. EVS snapshot An EVS snapshot is a complete copy or image of the disk data at a specific time point.
Volume Backup Service (VBS) provides snapshot-based data protection for Elastic Volume Service (EVS) disks. VBS secures your data, even if an EVS disk is faulty or encounters a logical error (for example, mis-deletion, hacker attacks, and virus infection).
Volume Backup Service (VBS) provides snapshot-based data protection for Elastic Volume Service (EVS) disks. VBS secures your data, even if an EVS disk is faulty or encounters a logical error (for example, mis-deletion, hacker attacks, and virus infection).
For a BMS, a maximum of 60 EVS disks (1 system disk and 59 data disks) are supported. Only SCSI disks can be attached.
An EVS disk can be expanded either in the Available or In-use state. Expanding the disk capacity on the management console enlarges the disk capacity, but you still need to log in to the server and extend the disk partitions and file systems to make that additional space usable.
In the list, select Elastic Volume Service (EVS) for Service Type. In the Resource Tag column, find the _sys_recycle_bin_volume:true tag, which identifies the EVS recycle bin bill.
CSS uses EVS and local disks to store your indices. During cluster creation, you can specify the EVS disk type and specifications (the EVS disk size). EVS disk types include common I/O, high I/O, and ultra-high I/O.
If this still fails to meet your needs, it is recommended that you create RAID arrays with EVS disks or manage EVS disks using LVM. Parent topic: Capacity
Common Application Scenarios and Usage Instructions of SCSI EVS Disks BMSs support only SCSI EVS disks. Shared SCSI EVS disks: Shared SCSI EVS disks must be used together with a distributed file system or cluster software.
For example, if an IAM user wants to query EVS disks using an API, the user must have been granted permissions that allow the evs:volumes:list action. Supported Actions EVS provides system-defined policies that can be directly used in IAM.
For more information, see Creating and Using an EVS Disk. Parent topic: General
Differences Between Expanding an EVS Disk and Creating an EVS Disk The differences are as follows: Expanding an EVS disk is when you expand the capacity of an existing EVS disk. Some systems let you expand the capacity of EVS disks in use.
When you create a BMS, you can select one from the following storage types: Elastic Volume Service (EVS): provides EVS disks of different QoS configurations to meet performance requirements in various scenarios.
Step 1: Purchase an EVS Disk Buy a data disk on the EVS console. Step 2: Attach the EVS Disk Attach the data disk to a Linux server. Step 3: Initialize the EVS Disk Initialize the data disk on the server. Preparations Sign up with Huawei Cloud.
Volume Backup Service (VBS) provides online backup for Elastic Volume Service (EVS) disks and allows data restoration from backups, offering protection against virus attacks and software and hardware faults.
The first snapshot is a full snapshot, which backs up all data (data blocks) on the EVS disk at the time of the snapshot. Subsequent snapshots are incremental snapshots, which back up only changed data blocks since the last snapshot. Parent topic: Snapshot
For details, see Deleting an EVS Disk. Yearly/monthly disk: A yearly/monthly disk cannot be deleted, but you can unsubscribe from it if needed. For details, see Deleting an EVS Disk. Parent topic: Billing
Yearly/Monthly data disks purchased on the EVS console have different expiration times as the server. They can be unsubscribed from separately. Parent topic: Billing
Step 1: Purchase an EVS Disk Buy a data disk on the EVS console. Step 2: Attach the EVS Disk Attach the data disk to a Linux server. Step 3: Initialize the EVS Disk Initialize the data disk on the server. Preparations Sign up with Huawei Cloud.
