Performance Tuning; Device Fan-Out Ratio - HP StorageWorks 64 - SAN Director Switch Planning Manual

Planning Considerations for Fibre Channel Topologies
Device Fan-Out Ratio: 10 to 1
Figure 43: Device fan-out ratio

Performance Tuning

When designing or tuning a fabric for performance, it is critical to understand
application I/O characteristics so that:
■
■
102
10,000 IOPS
Interswitch Link
Fabric Connection
Device output in Gbps does not oversubscribe ISLs, leading to fabric
congestion.
Device output in IOPS does not result in a connectivity scheme that exceeds
fan-out ratios, leading to port congestion.
1,000 IOPS
1,000 IOPS
1,000 IOPS
1,000 IOPS
1,000 IOPS
1,000 IOPS
1,000 IOPS
1,000 IOPS
1,000 IOPS
1,000 IOPS
SAN High Availability Planning Guide