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HPE GreenLake for Block Storage developer guide

HPE GreenLake for Block Storage provides RESTful APIs to programmatically create, manage, and monitor block storage resources, enabling seamless integration and automation.

Prerequisites

Endpoints

Endpoints are the host URLs that you submit your API requests to. Block Storage has unique endpoints in specific regions. Use the following list to identify your application endpoint.

Authentication

The Block Storage API uses an access token for authentication. Instructions for obtaining an access token can be found on the Authentication page.

The HTTP Authorization request header is used to provide the access token in all API requests as a Bearer token.

  • Authorization:Bearer <access token>

Authorization

All API requests are authorized using permissions. The user owning the access token must have the required permissions assigned for the resources being accessed in order to be authorized. The required permissions are documented in the following guide pages.

Required permissions

To use the HPE GreenLake Block Storage API, you need appropriate permissions based on your role:

  • block-storage.host-initiator-group.read for all GET and LIST requests on host initiator group resources
  • block-storage.host-initiator-group.create for all POST requests on host initiator group resources
  • block-storage.host-initiator-group.update for all PUT requests on host initiator group resources
  • block-storage.host-initiator-group.delete for all DELETE requests on host initiator group resources
  • block-storage.host-initiator.read for all GET and LIST requests on host initiator resources
  • block-storage.host-initiator.create for all POST requests on host initiator resources
  • block-storage.host-initiator.update for all PUT requests on host initiator resources
  • block-storage.host-initiator.delete for all DELETE requests on host initiator resources
  • block-storage.performance-template.read for all GET and LIST requests on performance template resources
  • block-storage.performance-template.create for all POST requests on performance template resources
  • block-storage.performance-template.update for all PUT requests on performance template resources
  • block-storage.performance-template.delete for all DELETE requests on performance template resources
  • block-storage.protection-template.read for all GET and LIST requests on protection template resources
  • block-storage.protection-template.create for all POST requests on protection template resources
  • block-storage.protection-template.update for all PUT requests on protection template resources
  • block-storage.protection-template.delete for all DELETE requests on protection template resources
  • block-storage.bucket.read for all GET and LIST requests on bucket resources

For more information about roles and permissions, see the HPE GreenLake Cloud User Guide.

Making it all work

General guidelines

  • For asynchronous operations that return HTTP status 201 or 202, use the Location header in the API response to track progress.

  • Replace the base URL in examples with the endpoint for your region.

Create a new volume

Create a volume on an HPE Alletra Storage MP B10000 device.

POST https://us-west.api.greenlake.hpe.com/block-storage/v1alpha1/devtype4-storage-systems/{systemId}/volumes

Payload:

{
  "comments": "test",
  "count": 2,
  "dataReduction": true,
  "name": "<resource_name>",
  "ransomware": true,
  "sizeMib": 16384,
  "snapshotAllocWarning": 5,
  "userAllocWarning": 5,
  "userCpg": "SSD_r6"
}

The endpoint https://us-west.api.greenlake.hpe.com is the endpoint for the US West application. If you are using HPE GreenLake for Block Storage in a different region, replace the endpoint with the endpoint the corresponding region.

Listing all volumes

Retrieve the list of volumes for the specified HPE Alletra Storage MP B10000 device. Replace {systemId} with your system identifier.

GET https://us-west.api.greenlake.hpe.com/block-storage/v1alpha1/devtype4-storage-systems/{systemId}/volumes

GET with filtering, pagination, and field selection

Use query parameters to filter results, paginate large datasets, and return only the fields you need. Parameter names may vary by endpoint, so refer to the API reference for the specific resource.

GET https://us-west.api.greenlake.hpe.com/block-storage/v1alpha1/devtype4-storage-systems/{systemId}/volumes?name=prod-vol&limit=50&offset=0&select=id,name,sizeMib

Query parameters:

name=prod-vol – Filters results to a specific name (example filter).

limit=50 – Limits the number of returned records (pagination control).

offset=0 – Skips a number of records before returning results (pagination control).

select=id,name,sizeMib – Limits the response fields to reduce payload size.

Update a volume's properties

Update the properties of a volume on an HPE Alletra Storage MP B10000 device. Replace {systemId} and {volumeId} with actual IDs.

PUT https://us-west.api.greenlake.hpe.com/block-storage/v1alpha1/devtype4-storage-systems/{systemId}/volume/{volumeId}

Payload:

{
  "dataReduction": true,
  "name": "volume_Name",
  "ransomware": true,
  "sizeMib": 1,
  "snapshotAllocWarning": 1,
  "userAllocWarning": 1,
  "userCpgName": "cpg_1"
}

Delete a volume

Delete the specified volume on the given HPE Alletra Storage MP B10000 device. Replace {systemId} and {volumeId} with actual IDs.

DELETE https://us-west.api.greenlake.hpe.com/block-storage/v1alpha1/devtype4-storage-systems/{systemId}/volume/{volumeId}
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