Use DescribeDiskMonitorData to query cloud disk performance data - Elastic Compute Service - Alibaba Cloud - Elastic Compute Service

Queries the usage information of a disk within a specified period, such as read IOPS, write IOPS, read bandwidth (B/s), write bandwidth (B/s), read latency (μs), and write latency (μs).

Operation description

When you call this operation, take note of the following limits:

You can query only the usage information of disks that are in the In Use (In_use) state. For more information, see Disk states.

Note
If the returned information has missing content, the disk was not in the In Use (In_use) state during that period, and the usage information cannot be obtained.
A maximum of 400 data entries can be returned at a time. The value of (EndTime – StartTime) / Period must be less than or equal to 400. That is, the value of the TotalCount response parameter cannot exceed 400. Otherwise, the InvalidParameter.TooManyDataQueried error is returned.
You can query the monitoring information of up to the last 30 days. The specified StartTime parameter cannot be more than 30 days earlier than the current time.

Request example

Assume that you want to query the usage information of a disk whose ID is d-bp14emm68wx98vjk**** in the China (Hangzhou) region from 2025-02-17T00:00:00Z to 2025-02-18T10:00:00Z at intervals of 600 seconds. Configure the request parameters as follows:

RegionId:"cn-hangzhou", // Set the China (Hangzhou) region
DiskId:"d-bp14emm68wx98vjk****", // Set the disk ID
StartTime:"2025-02-15T00:00:00Z", // Set the query start time
EndTime:"2025-02-17T00:00:00Z", // Set the query end time
Period:"600", // Set the data granularity

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Test

RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.
API: The API that you can call to perform the action.
Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.
Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.
- For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.
- For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.
Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.
Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

ecs:DescribeDiskMonitorData

get

*Disk

acs:ecs:{#regionId}:{#accountId}:disk/{#diskId}

None

Request parameters

Parameter	Type	Required	Description	Example
DiskId	string	Yes	The ID of the disk to query.	d-bp1bq5g3dxxo1x4o****
StartTime	string	Yes	The start time of the data. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC. If the value of seconds (ss) is not 00, the start time is automatically set to the beginning of the next minute. Note You can query the monitoring information of up to the last 30 days. The `StartTime` parameter cannot be more than 30 days earlier than the current time.	2014-07-23T12:07:00Z
EndTime	string	Yes	The end time of the data. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC. If the value of seconds (ss) is not 00, the end time is automatically set to the beginning of the next minute.	2014-07-23T12:09:00Z
Period	integer	No	The granularity of the data. Unit: seconds. Valid values: Default value: 60. Note The value of (EndTime – StartTime) / Period must be less than or equal to 400. A maximum of 400 data entries can be returned at a time.	60

Response elements

Element	Type	Description	Example
	object
TotalCount	integer	The number of entries returned for disk usage information, which is the number of periods.	3
RequestId	string	The request ID.	473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E
MonitorData	object
DiskMonitorData	array<object>	The collection of disk monitoring data.
	object	The collection of disk monitoring data.
BPSRead	integer	The read bandwidth of the disk. Unit: byte/s.	0
IOPSRead	integer	The number of read I/O operations per second on the disk.	0
LatencyRead	integer	The read latency of the disk. Unit: microseconds.	0
BPSTotal	integer	The total read and write bandwidth of the disk. Unit: byte/s.	204
IOPSTotal	integer	The total number of read and write I/O operations per second on the disk.	0
TimeStamp	string	The timestamp of the monitoring data. The time follows the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time is displayed in UTC.	2014-07-23T12:07:00Z
LatencyWrite	integer	The write latency of the disk. Unit: microseconds.	0
IOPSWrite	integer	The number of write I/O operations per second on the disk.	0
DiskId	string	The ID of the disk.	d-bp1bq5g3dxxo1x4o****
BPSWrite	integer	The write bandwidth of the disk. Unit: byte/s.	204

Examples

Success response

JSON format

{
  "TotalCount": 3,
  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E",
  "MonitorData": {
    "DiskMonitorData": [
      {
        "BPSRead": 0,
        "IOPSRead": 0,
        "LatencyRead": 0,
        "BPSTotal": 204,
        "IOPSTotal": 0,
        "TimeStamp": "2014-07-23T12:07:00Z",
        "LatencyWrite": 0,
        "IOPSWrite": 0,
        "DiskId": "d-bp1bq5g3dxxo1x4o****",
        "BPSWrite": 204
      }
    ]
  }
}

Error codes

HTTP status code	Error code	Error message	Description
400	InvalidStartTime.Malformed	The specified parameter "StartTime" is not valid.	The specified StartTime parameter does not conform to the specification.
400	InvalidEndTime.Malformed	The specified parameter "EndTime" is not valid.	The specified EndTime parameter is invalid.
400	InvalidPeriod.ValueNotSupported	The specified parameter "Period" is not valid.
400	InvalidStartTime.TooEarly	The specified parameter "StartTime" is too early.
400	InvalidParameter.TooManyDataQueried	Too many data queried.
400	Throttling	Request was denied due to request throttling.
400	InvalidInstanceType.NotSupportCredit	The InstanceType of the specified instance does not support credit.	The instance type does not support burstable instances.
400	InvalidParameter.EndTime	The specified parameter EndTime is earlier than StartTime.	The end time cannot be earlier than the start time.
500	InternalError	The request processing has failed due to some unknown error, exception or failure.	An internal error has occurred. Try again later.
404	InvalidDiskId.NotFound	The DiskId provided does not exist in our records.	The specified disk does not exist. Check whether the disk ID is correct.

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.