Create LUN: Quality of Service

Specify Quality of Service (QoS) attributes to allocate the storage resources necessary to create the LUN.

1. Select Single Tier or Auto Tier.
   Only select the Auto Tier option if the Storage Domain has more than one storage class.
2. Click the Quality of Service tab.
3. Select a Storage Domain for the LUN.
   Click the ellipsis button [...] to review the available storage capacity and storage classes for each Storage Domain.
4. Enter the LUN Name.
5. (Optional) Select the volume group to which you want the new LUN to belong.
6. From the Storage Profile drop-down list, select an existing profile or select Custom to create Storage Profile.

   • If you select an existing Storage Profile, the system updates the QoS attributes as defined by the selected profile. Some fields are grayed out (unavailable) which indicates you cannot change those fields as the fields were defined by the storage profile.

   • If you select Custom, select a Storage Class and then select either Basic or Advanced:

     Basic

     Complete these fields: Typical Access, I/O Bias, Redundancy, and Priority Level.

     Advanced

     Complete these fields: RAID Level, Read Ahead, and Priority Level.

7. Select a value for Background Copy Priority.
8. Adjust the values in the Capacity and Allocated Logical Capacity fields as necessary.
9. Click OK to create the LUN.
10. Select or deselect Deselect Disable Reference Tag Checking .
    Reference Tag Checking Indicates that the HBA bypasses the reference tag check as part of the process for ensuring data protection integrity for the LUN
11. Check or clear Use as a Boot LUN.
    Use as a Boot LUN specifies that the LUN is used as a boot drive in the SAN.