Dell DR4300e NetVault Backup - Setting Up the DR Series System as an RDA or VT - Page 36

Week Logical Size 1 24.2TB 2 24.2TB 3 24.2TB 4 24.2TB 5 24.2TB Total 121TB Pre-Deduplication 10% Change Rate Logical Logical Full Metrics Incremental Metrics 20TB 2TB 20TB 2TB 20TB 2TB 20TB 2TB 20TB 2TB A.2.4 Media retention and grouping Due to the nature of Virtual Tape Libraries media must be managed in order to insure 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, such as NetVault Backup, 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. A.2.5 VTL media count guidelines Type Capacity Max number of Tapes supported LTO-4 800GiB 2000 LTO-3 400GiB 4000 LTO-2 200GiB 8000 LTO-1 100Gib 10000 LTO-1 50Gib 10000 LTO-1 10GiB 10000 36 Setting Up the Dell DR Series System as an RDA or VTL Backup Target for Dell NetVault Backup