Dell PowerVault MD3000i User's Guide - Page 60
Host-to-Virtual Disk Mapping, Modifying and Removing Host-to-Virtual Disk Mapping
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Host-to-Virtual Disk Mapping After you create virtual disks, you must map them to the host(s) connected to the array. When you configure host-to-virtual disk mapping, consider these guidelines: • Each virtual disk in the storage array can be mapped to only one host or host group. • Host-to-virtual disk mappings are shared between controllers in the storage array. • A unique LUN must be used by a host group or host to access a virtual disk. • Not every operating system has the same number of LUNs available. Creating Host-to-Virtual Disk Mappings Create host-to-virtual disk mappings by clicking the Configure tab, then clicking Create Host-to-Virtual Disk Mappings. When you click this link, the Storage Manager displays a series of pages in which you select the hosts and virtual disks to be mapped. After you complete this configuration, verify the mapping by clicking Host-toVirtual Disk Mappings on the Summary tab to ensure the configuration was created correctly. Modifying and Removing Host-to-Virtual Disk Mapping You might choose to modify or remove a host-to-virtual disk mapping for several reasons, such as an incorrect mapping or reconfiguration of the storage array. Modifying or removing a host-to-virtual disk mapping applies to both hosts and host groups. NOTICE: Before you modify or remove a host-to-virtual disk mapping, you must stop any data access (I/O) to the virtual disks to prevent data loss. 1 Stop any data access (I/O) to the virtual disks. 2 Click the Modify tab and then click Edit Host-to-Virtual Disk Mappings. MD Storage Manager displays a list of virtual disks and the hosts to which they are mapped. 3 Select the virtual disk you wish to modify by clicking its name. 60 Disk Groups and Virtual Disks