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EVS Concepts Table 1 EVS concepts Concept Description Reference IOPS Number of read/write operations performed by an EVS disk per second. Disk Types and Performance Throughput Amount of data read from and written into an EVS disk per second.
What Is EVS? Overview Elastic Volume Service (EVS) offers scalable block storage for cloud servers. EVS disks provide high reliability, high performance, and come with a variety of disk types.
What Are the Differences Between Expanding Capacity by Expanding an EVS Disk and Creating a New 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.
Extending the Volume Group by Adding an EVS Disk Scenarios If the space of an LVM volume group no longer meets your needs, you can extend the volume group by adding new EVS disks, creating physical volumes, and adding the physical volumes to the volume group.
Managing Encrypted EVS Disks What Is EVS Disk Encryption? EVS enables you to encrypt data on newly created disks as required. For details, see Purchasing an EVS Disk. It uses the industry-standard XTS-AES-256 cryptographic algorithm and keys to encrypt EVS disks.
Deleting a Shared EVS Disk Because a shared EVS disk can be attached to multiple servers, ensure that the shared EVS disk is detached from all the servers before deletion. For details, see Unsubscribing from or Deleting an EVS Disk.
Managing EVS Snapshots EVS Snapshot Overview Using EVS Snapshots
Managing EVS Quotas Querying EVS Resource Quotas Increasing EVS Resource Quotas
Attaching the Disk on the EVS Console Sign in to the console. Click in the upper left corner and choose Storage > Elastic Volume Service. The Elastic Volume Service page is displayed. In the disk list, locate the disk and click Attach.
If you no longer need an EVS disk or want to attach it to a different server in the same AZ, detach the disk by referring to Detaching an EVS Disk. Parent Topic: Attaching an EVS Disk
Updating an EVS Disk Function This API is used to update an EVS disk. Calling Method For details, see Calling APIs. URI PUT /v2/{project_id}/volumes/{volume_id} Table 1 Path Parameters Parameter Mandatory Type Description project_id Yes String The project ID.
Creating an EVS Disk Scenarios This section describes how to create an EVS disk by calling APIs. For details about how to call APIs, see Calling APIs. In the following example, APIs are called to create a disk from a snapshot.
Managing EVS Tags Tag Overview Adding a Tag Modifying a Tag Deleting a Tag Searching for Disks by Tag
Updating an EVS Snapshot Function This API is used to update an EVS snapshot. Calling Method For details, see Calling APIs. URI PUT /v2/{project_id}/snapshots/{snapshot_id} Table 1 Path Parameters Parameter Mandatory Type Description project_id Yes String The project ID.
Example Requests Creating an EVS disk (Use an image to create a non-shared EVS disk in the DSS storage pool. Set the disk type to common I/O, device type to SCSI, and disk size to 40 GiB.)
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Viewing Disk Details from the EVS Console Sign in to the console. Click in the upper left corner and choose Storage > Elastic Volume Service. The Elastic Volume Service page is displayed.
Deleting an EVS Snapshot Function This API is used to delete an EVS snapshot. Constraints A snapshot can be deleted only when its status is available or error. Calling Method For details, see Calling APIs.
Updating an EVS Snapshot Function This API is used to update an EVS snapshot. Enterprise project authorization is supported. Calling Method For details, see Calling APIs.
Creating EVS Disks Function This API is used to create a pay-per-use or yearly/monthly EVS disk. Calling Method For details, see Calling APIs.
