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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.
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
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.
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
API Calling EVS supports Representational State Transfer (REST) APIs, allowing you to call APIs using HTTPS. For details about API calling, see Calling APIs. Parent Topic: Before You Start
For more information about shared disks, see Managing Shared EVS Disks. Shared disks are a type of EVS disks that can be attached to multiple servers. A shared file system or cluster management system must be set up before you can properly use a shared disk.
Scenarios When the EVS disk space on a server is insufficient, the server running speed will be affected, which will further affect user experience.
Disk Backup Cloud Backup and Recovery (CBR) provides the cloud disk backup function, which allows you to back up EVS disks while servers are running.
For more information, see Detaching an EVS Disk from a Running ECS. Parent topic: Detachment
Disk Type Selection EVS Performance EVS performance metrics include: IOPS: number of read/write operations performed by an EVS disk per second Throughput: amount of data read from and written into an EVS disk per second Read/write I/O latency: minimum interval between two consecutive
POST /v2/{project_id}/volumes Create empty EVS disks. evs:volumes:create evs:volumes:get Create EVS disks from images. evs:volumes:create ims:images:get evs:volumes:get Create EVS disks from snapshots. evs:volumes:create evs:snapshots:get evs:volumes:get √ × Expand the capacity of
Disk Management Creating EVS Disks Deleting an EVS Disk Updating an EVS Disk Querying EVS Disk Types Querying Details About an EVS Disk Type Querying EVS Disks Querying Details About an EVS Disk Querying Details About All EVS Disks Querying Extension APIs Expanding Capacity of an
POST /v2/{project_id}/volumes Create empty EVS disks. evs:volumes:create evs:volumes:get Create EVS disks from images. evs:volumes:create ims:images:get evs:volumes:get Create EVS disks from snapshots. evs:volumes:create evs:snapshots:get evs:volumes:get √ × Expand the capacity of
Disk Management Querying Details About an EVS Disk (Deprecated) Creating EVS Disks Querying Details About All EVS Disks Deleting an EVS Disk Updating an EVS Disk Querying EVS Disk Types Querying Details About an EVS Disk Type Querying EVS Disks Querying Details About an EVS Disk Querying
