Dell DR4300 Microsoft DPM - Setting Up the DR Series System as a VTL Backup Ta - Page 50

B.4 B.5 20TB Total initial footprint with a 10% change rate Pre-Deduplication Week 10% Change Rate Logical Logical Logical Incremental Size Full Metrics Metrics 1 24.2TB 20TB 2TB 2 24.2TB 20TB 2TB 3 24.2TB 20TB 2TB 4 24.2TB 20TB 2TB 5 24.2TB 20TB 2TB Total 121TB NOTE: For complete details please refer to the Dell DR Disk Backup Appliance Capacity Sizing Guide: A Dell Technical White Paper or contact a support or sales specialist for assistance. Media retention and grouping Due to the nature of VTLs, media must be managed to ensure that physical capacity is reclaimed in an orderly fashion to avoid running out of space and disrupting operations. Media must be grouped within the data management application, in a way that full data sets are targeted to separate media as incremental data and they in turn are grouped by data sets that expire within the same period or that share the same recovery point objective. This ensures that media can be reused effectively so that when full, all incremental data expire, the logical space can be reconciled thus enabling the physical space to be reclaimed. VTL media count guidelines Type Capacity Max number of Tapes supported LTO-4 800GiB 2000 B.6 Adding VTL media to a VTL container Follow these steps. 1. To add media to an existing VTL container, select Containers in the left navigation area of the DR Series system user interface. 50 Setting Up the Dell™ DR Series System as a VTL Backup Target on Microsoft® Data Protection Manager | January 2016