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Cisco Storage Media Encryption
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Cisco Cisco Storage Media Encryption White Paper
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© 2012 Cisco and/or its affiliates. All rights reserved. This document is Cisco Public Information.
Page 2 of 43
Contents
Audience ................................................................................................................................................................... 4
What Is New .............................................................................................................................................................. 4
Cisco Storage Media Encryption Overview ........................................................................................................... 4
Cisco SME Terminology .......................................................................................................................................... 6
Terminology Specific to Cisco SME Tape
......................................................................................................... 6
Terminology Specific to Cisco SME Disk
......................................................................................................... 6
Cisco SME Requirements ....................................................................................................................................... 7
Software Requirements
...................................................................................................................................... 7
Hardware Requirements
..................................................................................................................................... 7
Security Engine Requirements
..................................................................................................................... 7
Cisco DCNM and KMC Workstation Requirements
..................................................................................... 8
Smart Card Readers
....................................................................................................................................... 8
License Requirements
........................................................................................................................................ 9
Topology Requirements
..................................................................................................................................... 9
Zoning Requirements
....................................................................................................................................... 11
FC-Redirect Requirements
............................................................................................................................... 11
Requirements Specific to Cisco SME Disk
................................................................................................ 12
Requirements Specific to Cisco SME Tape
............................................................................................... 12
Configuration Requirements
............................................................................................................................ 12
Requirements for Replication and Snapshot Technologies
......................................................................... 12
Cisco SME Data Flow ............................................................................................................................................ 12
Write I/O Data Flow
........................................................................................................................................... 12
Read I/O Data Flow
........................................................................................................................................... 13
Single Cisco SME Switch
................................................................................................................................. 14
Cisco SME Solution Architecture ......................................................................................................................... 15
Cisco SME Security Architecture ......................................................................................................................... 16
Securing Communications Among Components
.......................................................................................... 16
Securing Cisco SME Keys
................................................................................................................................ 17
Cisco SME Administrative Roles .......................................................................................................................... 18
Cisco SME Clustering ............................................................................................................................................ 19
Cisco SME Data Flow in a Cluster
................................................................................................................... 19
Failure Conditions
............................................................................................................................................ 20
Cisco SME Design Considerations ...................................................................................................................... 21
Host-Based Cluster Considerations (Cisco SME Disk Only)
........................................................................ 21
Cisco SME Clustering: High-Availability Considerations
.............................................................................. 21
Network Topologies
.......................................................................................................................................... 22
Topology Considerations
................................................................................................................................. 22
General Guidelines
....................................................................................................................................... 22
Guidelines Specific to Multiple Clusters
.................................................................................................... 22
Core-Edge Topology
.................................................................................................................................... 22
Edge-Core-Edge Topology
.......................................................................................................................... 24
FCIP Topology
.............................................................................................................................................. 25
Cisco SME Load-Balancing Considerations
................................................................................................... 26
Cisco KMC Considerations
.............................................................................................................................. 26
Cisco KMC High Availability
........................................................................................................................ 26
Key Database High Availability
................................................................................................................... 27
Cisco DCNM Guidelines
................................................................................................................................... 27
Cisco SME Solution Scalability Limits
............................................................................................................ 28
Encryption Throughput Guidelines
................................................................................................................. 29
Disk Encryption Latency Guidelines (Cisco SME Disk Only)
........................................................................ 30
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