AB379B - PCI-X Dual Channel 4Gb/s Fibre Channel Adapter Performance Paper for Integrity Servers

6
Scalability
A series of tests were conducted to evaluate the throughput scalability of the AB379B on the HP Integrity
sx2000 Superdome server.
Chart 3: 256KB Sequential Throughput Scaling
Chart 3 shows throughput scaling of one to six AB379B adapters (1 to 12 ports) for read throughput and write
throughput tests. The X-axis is the number of ports. The Y-axis is the throughput performance in MB/s.
The chart shows excellent throughput performance at close to the 4Gb FC theoretical maximum, with linear
scaling through twelve ports, reaching an aggregate of over 4800 MB/s for reads or writes.
The AB379B on Integrity servers offers an excellent scalable SAN solution.
0
500
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
5,000
Reads
407 814 1,216 1,626 2,030 2,429 2,828 3,236 3,623 4,043 4,410 4,803
Writes
405 810 1,214 1,627 2,017 2,434 2,817 3,227 3,616 4,027 4,410 4,817
1 2 3 4 5 6 7 8 9 10 11 12
Throughput - MB/s
(10^6 bytes /sec)
System: HP Integrity sx2000 superdome, 16 CPUs (1600 MHz Itanium 2), 4 cells, 64GB memory
HBAs: Six AB379A 2-Port 4G PCI-X Fibre Channel Adapters in 266 Mhz PCI-X slots
Disks: Thirty single controller MSA1500's with 512 MB cache
Number of Ports