I/O Rates - EMC Connectrix EC-1200 Planning Manual

Connectrix Topologies
4
4-8
Connectrix v6.02 Planning Guide
simultaneously use the Fibre Channel director port. Finally, choose
that number or the recommended maximum of 12:1, whichever is
smaller. If you do not have an estimate of the workload, it is
suggested that you not exceed a 4:1 fan-out.
The total simultaneous I/O rate of all combined HBAs on one Fibre
Channel director port should not exceed the maximums shown in
Figure 4-6.
7000
6717
6000
5000
4000
3000
2793
2000
1000
0
512

I/O Rates

Figure 4-6
These rates are maximums for cache reads in the Symmetrix models
shown. For cache writes, use 70% of the figures. For Symmetrix
models 3330/5330, 3430/5430, or 3700/5700, reduce the numbers
shown for models 3630/5630, 3830/5830, and 3930/5930 by 20%.
Also be aware that the greater the utilization of the resource is, the
higher the response time.
Figure 4-7 shows the effect of utilization on response time for Fibre
Channel director port read hits. Utilization is scaled both as a
percentage and as a response time factor. The response time factor
normalizes the low utilization value to 1.0.
Symmetrix Fibre Channel Director
Single Port I/Os per Second, 100% Read Hit
6084
4782
Symmetrix Models
8430/8530
8730/8830
2690
2323
Symmetrix Models
3630/5630
3830/5830
3930/5930
4096 8192
Block Size
3622
2197 2084
2041
1068
1058
16384 32768 65536