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DATA CENTER
BEST PRACTICES
Misbehaving Devices .......................................................................................................................... 25
DESIGN GUIDELINES................................................................................................................................. 26
Monitoring.......................................................................................................................................... 26
IOPS and VMs.................................................................................................................................... 27
ROUTED TOPOLOGIES—METASANS............................................................................................................ 27
Backbone Considerations.................................................................................................................... 29
Avoiding Congestion............................................................................................................................ 31
Available Paths................................................................................................................................... 31
Design Guidelines and Constraints for Routed SANs.............................................................................. 31
VIRTUAL FABRICS TOPOLOGIES.................................................................................................................. 32
VF Guidelines..................................................................................................................................... 32
Use Case: FICON and Open Systems (Intermix)..................................................................................... 33
INTELLIGENT SERVICES............................................................................................................................. 33
In-Flight Encryption and Compression—Gen 5 Fibre Channel Platforms Only............................................ 33
Virtual Fabric Considerations (Encryption and Compression)............................................................ 34
In-Flight Encryption and Compression Guidelines................................................................................... 34
DISTANCE EXTENSION TOPOLOGIES........................................................................................................... 34
Buffer Allocation ................................................................................................................................ 34
Fabric Interconnectivity over Fibre Channel at Longer Distances....................................................... 35
FC over IP (FCIP)................................................................................................................................. 35
Basic FCIP Architectures............................................................................................................... 35
FCIP with FCR............................................................................................................................... 38
Using EX_Ports and VEX_Ports....................................................................................................... 39
FCIP with FICON Environments....................................................................................................... 40
Advanced FCIP Configuration......................................................................................................... 41
IPsec........................................................................................................................................... 41
Compression................................................................................................................................ 41
Adaptive Rate Limiting (ARL).......................................................................................................... 42
PerPriority-TCP-QoS.............................................................................................................................. 43
FCIP Design Best Practices.................................................................................................................. 44
Bandwidth Allocation..................................................................................................................... 44
FCIP Trunking...................................................................................................................................... 46
Protocol Optimization.......................................................................................................................... 47
Virtual Fabrics.................................................................................................................................... 48
Ethernet Interface Sharing............................................................................................................. 49
What is Not Supported?...................................................................................................................... 50
WORKLOADS............................................................................................................................................ 51
Workload Virtualization........................................................................................................................ 51
Intel-Based Virtualization Storage Access............................................................................................. 51
Design Guidelines......................................................................................................................... 52
Monitoring.................................................................................................................................... 52
Unix Virtualization............................................................................................................................... 52
Recent Changes........................................................................................................................... 52
SAN Design and Best Practices
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