Performance and Recommended Use of AB290A Combination 2-Port U320 SCSI / 2-Port Gigabit Ethernet Cards

1 SCSI and 1 GbE Port Combined Traffic Performance
8
1 SCSI and 1 GbE Port Combined Traffic Performance
Figure 6 shows the performance results when a combination of unidirectional traffic is run
simultaneously through one U320 SCSI port and one 1000Base-T port on the AB290A
card.
The following highlights show the exceptional performance the AB290A achieved during
combination traffic testing:
Figure 6
AB290A Throughput with 1 SCSI and 1 GbE in
rx4640
• The first two dark bars show disk read traffic consistently achieved greater than 97% of
base rate on the rx4640 system. The active U320 SCSI port achieved 257 MB/s of
disk read throughput. This was while continuous, standard-Ethernet-frame traffic was
occurring on the active 1000Base-T port.
• The last two dark bars show disk write traffic achieved greater than 86% of base rate on
the rx4640 system. The active U320 SCSI port achieved 203 MB/s or greater disk write
throughput. This was while continuous, standard-Ethernet-frame traffic was occurring on
the active 1000Base-T port.
• The light small bars show unidirectional Ethernet traffic achieved link rate on the rx4640
reaching 946 megabits of application data per second for transmit and 947 megabits
per second for receive traffic on the used 1000 Base-T port. This was while continuous
disk traffic was occurring on the active U320 SCSI port.
-
25
50
75
100
125
150
175
200
225
250
275
300
Megabytes per second SCSI Disk
-
500
1,000
1,500
2,000
2,500
3,000
Megabits per second Ethernet
SCSI Disk in rx4640 PCIX-133
257 257 209 203
Gi
g
e in rx4640 PCIX-133
947 947 948 947
Disk Rd Disk Rd Disk Wrt Disk Wrt
Gige Xmit Gige Recv Gige Xmit Gige Recv