Creating Single‑Tier LUNs

The Oracle FS System creates LUNs in a single storage tier, which consists of Quality of Service (QoS) properties and Storage Classes.

When you create a LUN, the Oracle FS System calculates whether there is enough storage resources available to create a new logical volume. The Oracle FS System Manager (GUI) provides graphs that represent the storage capacity requirements for the volume and a second graph that represents the overall system capacity requirements. The system updates the graphs as you adjust the QoS values for Storage Class and redundancy.

Note: The capacity values displayed in the usage graphs represent the sizes of the largest volume that you can create in a particular Storage Class, given one of two performance configurations.

Administrators can create Storage Domains in the system. When the system contains more than one Storage Domain, the Storage Domain field displays on the GUI screen. Otherwise this field is not present in the GUI and the system assigns the LUN to the default Storage Domain.

You can also assign a LUN to a volume group. If a volume group is not available, you can create one on the screen. administrative system object that is used to organize logical volumes and, possibly, other volume groups. Volume groups can span Storage Domains.

The Create LUN dialog contains three tabs for entering the QoS information and mapping the LUN to a host entry.

Quality of Service

(Required) The Quality of Service tab allows you to define the QoS attributes for a LUN, assign your LUN to a volume group and a Storage Domain. You can also create a volume group from this tab and view the Storage Domain properties.

Note: If no custom Storage Domains have been defined, the Storage Domain option does not appear on the tab.

Enter the LUN volume name, and then select a Storage Profile that contains predefined QoS attributes. If necessary, choose the custom QoS attributes. The system contains two levels of QoS settings: Basic and Advanced.

Mapping

(Optional) The Mapping tab allows you to specify which SAN host entries can access the LUN.

You can map the LUN using one of the following methods:

Map the LUN to a SAN host entry using a specific LUN number.
Map all SAN host entries to access the LUN using the same LUN number. This method is not recommended.

Data Protection

(Optional) The Data Protection tab allows you to allocate the storage capacity for the Clone LUNs repository. You can apply unique QoS properties to the Clone LUN repository and assign the maximum storage capacity for the repository. You can also create a clone schedule to perform data protection at regular intervals.