Cisco Cisco Storage Media Encryption White Paper

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Read Operations ........................................................................................................................................... 30

Write Operations .......................................................................................................................................... 30

Sizing Guidelines .............................................................................................................................................. 30

Sizing Using Line-Rate Disk or Tape Drive Throughput ........................................................................... 30

Sizing Using Backup Window Calculations ............................................................................................... 31

Inserting Cisco SME Tape into Existing Cisco SANs ......................................................................................... 31

Cisco SME Disk Deployment in Storage Environments ..................................................................................... 31

Managing Replication with Cisco SME ........................................................................................................... 32

Managing Snapshots in Cisco SME ................................................................................................................ 33

Replication and Mirroring ................................................................................................................................. 33

Copy-on-Write Snapshots ................................................................................................................................ 34

EMC Recover Point IO Journal Snapshots ..................................................................................................... 35

Mix of Disk and Tape Devices .......................................................................................................................... 35

Inserting Cisco SME Disk into Existing Storage Environments ................................................................... 36

LUNs Containing Preexisting Data ............................................................................................................. 36

LUNs Not Containing Preexisting Data ...................................................................................................... 36

Maintaining Data Security ..................................................................................................................................... 37

Rekey (Cisco SME Disk Only) .......................................................................................................................... 37

Master-Key Rekey ............................................................................................................................................. 37

Disk Key Replication ............................................................................................................................................. 37

Appendix ................................................................................................................................................................ 38

Cisco SME Tape Checklist ............................................................................................................................... 38

Cisco SME Disk Checklist ................................................................................................................................ 38

Generic Checklist .............................................................................................................................................. 39

Sizing and Placement Deployment Examples ................................................................................................ 39

Example 1: Single-Switch Single-Fabric Tape Backup Environment ...................................................... 39

Example 2: Core-Edge Topology Tape Backup Environment .................................................................. 40

Example 3: Edge-Core-Edge Topology Tape Backup Environment with Restricted Zoning ................. 42