Specifications

DATA CENTER BEST PRACTICES
SAN Design and Best Practices 3 of 84
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 Conguration ........................................................................................................ 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