Dell PowerVault MD3260 Administrator's Guide - Page 82

You can use the Storage Partitioning Wizard to define a single storage partition. The Storage Partitioning Wizard guides you through the major steps required to specify which host groups, hosts, virtual disks, and associated logical unit numbers (LUNs) are to be included in the storage partition. Storage partitioning fails when: • All mappings are defined • You create a mapping for a host group that conflicts with an established mapping for a host in the host group • You create a mapping for a host in a host group that conflicts with an established mapping for the host group Storage partitioning is unavailable when: • No valid host groups or hosts exist in the object tree on the Host Mappings tab • No host ports are defined for the host being included in the storage partition • All mappings are defined NOTE: You can include a secondary virtual disk in a storage partition. However, any hosts that are mapped to the secondary virtual disk has read-only access until the virtual disk is promoted to a primary virtual disk, or the mirror relationship is removed. Storage partitioning topology is the collection of elements, such as Default Group, host groups, hosts, and host ports shown as nodes in the object tree of the Host Mappings tab in the AMW. For more information, see Using The Host Mappings Tab. If a storage partitioning topology is not defined, an informational dialog is displayed each time you select the Host Mappings tab. You must define the storage partitioning topology before you define the actual storage partition. Disk Group And Virtual Disk Expansion Adding free capacity to a disk group is achieved by adding unconfigured capacity on the array to the disk group. Data is accessible on disk groups, virtual disks, and physical disks throughout the entire modification operation. The additional free capacity can then be used to perform a virtual disk expansion on a standard or snapshot repository virtual disk. Disk Group Expansion To add free capacity to a disk group: 1. In the AMW, select the Storage & Copy Services tab. 2. Select a disk group. 3. From the menu bar, select Storage → Disk Group → Add Physical Disks (Capacity). Alternatively, right-click on the disk group and select Add Physical Disks (Capacity) from the pop-up menu. The Add Free Capacity window is displayed. Based on the RAID level, and the enclosure loss protection of the current disk group, a list of unassigned physical disks is displayed. NOTE: If the RAID level of the disk group is RAID Level 5, or RAID Level 6, and the expansion enclosure has enclosure loss protection, Display only physical disks that will ensure enclosure loss protection is displayed and is selected by default. 4. In the Available physical disks area, select physical disks up to the allowed maximum number of physical disks. NOTE: You cannot mix different media types or different interface types within a single disk group or virtual disk. 5. Click Add. A message prompts you to confirm your selection. 6. To add the capacity to the disk group, click Yes. 82