HP StorageWorks 6000 HP StorageWorks 6000-series Virtual Library System User G - Page 150

At this point, you can perform the following tasks: • Erase cartridges - erase or relabel expired cartridges to free up storage space. See your backup application manual for details. NOTE: Use the Cartridge Utilization report to identify cartridges that are consuming more space and can be erased to create more storage space. See "Receiving Automated Reports" on page 194. Erasing data from cartridges containing data that is not deduplicated will free up more storage space than erasing from cartridges with deduplicated data. • Reclaim space - see "Reclaiming Storage Space" on page 150. • Add more storage NOTE: You cannot hot-add storage while the VLS is deduplicating data. Reclaiming Storage Space The Reclaim Space task appears on the Chassis status screen when the storage capacity consumed reaches the user-defined threshold (or the default of 90%). This allows you to schedule reclamation of the additional storage you make available by erasing cartridges. First erase cartridges from your backup application, then follow the procedure below. From Command View VLS: 1. On the System tab, select Chassis from the navigation screen to open the Chassis status screen. 2. Select Reclaim Space in the task bar. The VLS system initiates space reclamation and the Notifications screen displays a notification of the scheduled reclamation. Managing Virtual Device LUNs The following information varies in some places from VLS firmware version 2.x and version 3.x and is noted where this occurs. The VLS has a LUN masking, a LUN mapping, and a port mapping feature that allows you to restrict host access to the LUNs (virtual libraries and tape drives) configured on the VLS and assign each virtual device to a specific Fibre Channel host port. These features allow you to allocate the virtual devices to individual hosts and distribute the virtual tape drives across the Fibre Channel host ports to achieve maximum bandwidth. VLS firmware version 3.x: You can set a global default so that either the VLS allows all hosts connected to the VLS through the SAN to access all virtual devices configured on the VLS, or the VLS prevents all hosts from viewing any virtual devices until they are explicitly mapped to the host. Each time you add a new host to the VLS, it takes the global default you have set. The VLS firmware also manages the LUN numbering so that the virtual device LUN assignments always meet operating system requirements and restrictions. See "Default LUN Numbering" on page 151 and "Operating System LUN Requirements and Restrictions" on page 151. See "LUN Masking (v3.x)" on page 152 and "LUN Mapping (v3.x)" on page 153 for details of these features. 150 Configuration