Help Center/ Elastic Volume Service/ API Reference/ API/ Disk Management/ Creating EVS Disks (Deprecated)

Updated on 2025-08-20 GMT+08:00

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Creating EVS Disks (Deprecated)

Function

This API is used to create one or multiple EVS disks. This API call exists for compatibility reasons only and is not meant to be used. Use another API.

Calling Method

For details, see Calling APIs.

URI

POST /v2/{project_id}/cloudvolumes

**Table 1** Path Parameters
Parameter	Mandatory	Type	Description
project_id	Yes	String	The project ID.

Request Parameters

**Table 2** Request header parameters
Parameter	Mandatory	Type	Description
X-Auth-Token	Yes	String	A token obtained from IAM is valid for 24 hours. When using a token for authentication, cache it to avoid frequently calling the API.

**Table 3** Request body parameters
Parameter	Mandatory	Type	Description
volume	Yes	CreateDiskOption object	The information of the disk to be created.
OS-SCH-HNT:scheduler_hints	No	CreateVolumeSchedulerHints object	The disk scheduling parameter, which can be used to create the disk in a dedicated storage pool.

**Table 4** CreateDiskOption
Parameter	Mandatory	Type	Description
availability_zone	Yes	String	The AZ where you want to create the disk.
backup_id	No	String	The backup ID. This parameter is mandatory when you create the disk from a backup.
count	No	Integer	The number of disks to be created in a batch. If this parameter is not specified, only one disk will be created. You can create a maximum of 100 disks in a batch. If the disk is created from a backup, batch creation is not possible, and this parameter must be set to 1. If the specified value is a decimal number, the number part will be used by default.
description	No	String	The disk description. You can enter up to 85 characters.
enterprise_project_id	No	String	The enterprise project ID. This ID is associated with the disk during the disk creation.
imageRef	No	String	The image ID. If this parameter is specified, the disk is created from an image.
metadata	No	Map<String,String>	The disk metadata information. Callers can add or remove the metadata information. The keys of this parameter used in EVS are described as follows: [__system__cmkid] The encryption CMK ID in metadata. This parameter is used together with __system__encrypted for encryption. The length of cmkid is fixed at 36 bytes. For details about how to obtain the key ID, see Querying the Key List. [__system__encrypted] The encryption field in metadata. The value can be 0 (no encryption) or 1 (encryption). If this parameter is not specified, the encryption attribute of the disk is the same as that of the data source. If the disk is not created from a data source, the disk is not encrypted by default. [hw:passthrough] If this parameter value is true, the disk device type is SCSI, which allows ECS OSs to directly access the underlying storage media and supports SCSI reservation commands. If this parameter value is false, the disk device type is VBD (default device type), which supports only simple SCSI read/write commands. If this parameter is not specified, the disk device type is VBD. If this parameter is not specified, the disk device type is VBD. "
multiattach	No	Boolean	Whether the disk is shareable. The value can be true (shareable) or false (non-shareable).
name	No	String	The disk name. If you create one disk, the name value is the disk name, which can contain a maximum of 64 characters. If you create multiple disks (the count value greater than 1), the system automatically adds a hyphen followed by a four-digit incremental number, such as -0000, to the end of each disk name. Example disk name: volume-0001 or volume-0002
shareable	No	String	Whether the disk is shareable. The value can be true (shareable) or false (non-shareable). \n This field has been deprecated. Use multiattach.
size	Yes	Integer	The disk size, in GiB. The restrictions are as follows: System disk: 1 GiB to 1,024 GiB Data disk: 10 GiB to 32,768 GiB This parameter is mandatory when you create an empty disk or use an image or a snapshot to create a disk. If you use an image or a snapshot to create a disk, the disk size cannot be smaller than the image or snapshot size. This parameter is optional if you create the disk from a backup. If not specified, the disk size is the same as the backup size.
snapshot_id	No	String	The snapshot ID. If this parameter is specified, the disk is created from a snapshot.
volume_type	Yes	String	The disk type. The value can be SATA, SAS, GPSSD, SSD, ESSD, GPSSD2, or ESSD2. SATA: the common I/O type (sold out) SAS: the high I/O type GPSSD: the general purpose SSD type SSD: the ultra-high I/O type ESSD: the extreme SSD type GPSSD2: the general purpose SSD V2 type ESSD2: the extreme SSD V2 type If the specified disk type is not available in the AZ, the disk will fail to be created. NOTE: If you create the disk from a snapshot, the volume_type value must be consistent with that of the snapshot's source disk. For details about disk types, see Disk Types and Performance.
tags	No	Map<String,String>	The disk tag information.

**Table 5** CreateVolumeSchedulerHints
Parameter	Mandatory	Type	Description
dedicated_storage_id	No	String	Definition The dedicated storage pool ID. If this parameter is specified, the disk will be created in the specified storage pool. Constraints N/A Range N/A Default Value N/A

Response Parameters

Status code: 202

**Table 6** Response body parameters
Parameter	Type	Description
job_id	String	The task ID. This parameter is returned when the disk is billed on a pay-per-use basis. > > >You can query whether the disk creation task is complete by task ID. For details, see Querying Task Status.
volume_ids	Array of strings	The IDs of the disks to be created. >>If 404 is returned when you query the details of a disk by disk ID, the disk is being created or has failed to be created. >You can query whether the disk creation task is complete by task ID. For details, see Querying Task Status.

Status code: 400

**Table 7** Response body parameters
Parameter	Type	Description
error	Error object	Definition The error code returned if an error occurs. For the error codes and their meanings, see Error Codes. Range N/A

**Table 8** Error
Parameter	Type	Description
code	String	Definition The error code returned if an error occurs. Range For the error codes and their meanings, see Error Codes.
message	String	Definition The error message returned if an error occurs. Range N/A

Example Requests

{
  "volume" : {
    "backup_id" : null,
    "count" : 1,
    "availability_zone" : "az1.dc1",
    "description" : "test_volume_1",
    "size" : 120,
    "name" : "test_volume_1",
    "imageRef" : null,
    "volume_type" : "SSD",
    "metadata" : {
      "__system__encrypted" : "0",
      "__system__cmkid" : null
    }
  }
}

Example Responses

Status code: 202

Accepted

{
  "job_id" : "70a599e0-31e7-49b7-b260-868f441e862b"
}

Status code: 400

Bad Request

{
  "error" : {
    "message" : "XXXX",
    "code" : "XXX"
  }
}

Status Codes

Status Code	Description
202	Accepted
400	Bad Request

Error Codes

See Error Codes.

Parent topic: Disk Management

Previous topic: Deleting an EVS Disk

Next topic: Querying EVS Disks (Deprecated)

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