Create Disk Offering

In the navigation pane of the ZStack Private Cloud UI, choose Resource Pool > Disk Offering. On the Disk Offering page, click Create Disk Offering. On the displayed Create Disk Offering page, set the following parameters:

Name: Enter a name for the disk offering.
Description: Optional. Enter a description for the disk offering.
Size: Set the volume size.
Disk Bandwidth: Optional. Set the upper limit of the volume I/O bandwidth. If not specified, the I/O bandwidth is not limited. Unit: MB/s | GB/s | TB/s.
The disk bandwidth parameter has the following two options:
- Total:
  If you select Total, set the upper limit of the total read and write speed of the volume.
  As shown in Figure 1.
  Figure 1. Total Bandwidth
- Read/Write:
  As shown in Figure 2.
  Figure 2. Read/Write Bandwidth
  If you select Read/Write, set the following parameters:
  - Volume Read Bandwidth: Set the upper limit of the read speed of the volume.
  - Volume Write Bandwidth: Set the upper limit of the write speed of the volume.

Advanced: You can configure advanced parameters in JSON format to customize the disk performance.

Sample:

{
  "allocate": {
    "primaryStorage": {
      "type": "Enter the primary storage type. Options: Ceph | LocalStorage | NFS | SharedBlock.",
      "uuid": "Enter the primary storage UUID.",
      "poolNames": [
        "Enter the name of the Ceph pool. If the primary storage type is not Ceph, delete the poolNames configuration."
      ]
    }
  },
  "priceUserConfig": {
    "volume": {
      "priceKeyName": "Customize the billing name of the data volume. The advanced parameters of the pricing list must be consistent with this field. Otherwise, the related billing metrics cannot be generated."
    }
  },
  "displayAttribute": {
    "volume": {
      "diskType": "Customize the display type of the data volume. This field is displayed on the details page of the volume."
    }
  }
}

The sample above contains three configurations:

Configure the primary storage of the data volume.
```
"allocate": {
    "primaryStorage": {
      "type": "Enter the primary storage type. Options: Ceph | LocalStorage | NFS | SharedBlock.",
      "uuid": "Enter the primary storage UUID.",
      "poolNames": [
        "Enter the name of the Ceph pool. If the primary storage type is not Ceph, delete the poolNames configuration."
      ]
    }
  }
```
- type: Enter the primary storage type. Options: Ceph | LocalStorage | NFS | SharedBlock. If the type is Ceph, you can specify a Ceph pool.
- uuid: Enter the primary storage UUID.
- poolNames: Enter the name of the Ceph pool. If the primary storage type is not Ceph, delete the poolNames configuration.
Note: If no primary storage is specified, delete all the preceding codes.
Configure the billing type of the data volume.
```
"priceUserConfig": {
    "volume": {
      "priceKeyName": "Customize the billing name of the data volume. The advanced parameters of the pricing list must be consistent with this field. Otherwise, the related billing metrics cannot be generated."
    }
  }
```
- priceKeyName: Customize the billing type of the data volume. The advanced parameters of the pricing list must be consistent with this field. Otherwise, the related billing metrics cannot be generated.
Note: If no billing is required, delete all the preceding codes.
Configure the display attributes of the data volume.
```
"displayAttribute": {
    "volume": {
      "diskType": "Customize the display type of the data volume. This field is displayed on the details page of the volume."
    }
  }
```
- volume: Customize the display name of the data volume. This field is displayed on the details page of the volume. You can configure multiple attributes in the key-value format.
Note: If no special display is required, delete all the preceding codes.

As shown in Figure 3. Click OK to finish creating a disk offering.