Data transfer speed for fibre channel ports – HP XP LUN Configuration and Security Manager Software User Manual
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LUN Manager for the XP10000/XP12000
Data transfer speed for Fibre Channel ports
As disk array operation continues, you may notice that a larger amount of data is transferred at some ports
and a smaller amount is transferred at other ports. To improve system performance, set a faster data
transfer speed for ports where a larger amount of data is transferred, and a slower data transfer speed for
ports where a smaller amount of data is transferred.
Standard, high-speed, and high-speed (2 port) modes
The channel adapter boards can operate in standard, high-speed, or high-speed (2-port) mode. Standard
mode is the default. If a channel adapter board satisfies certain conditions, you can set it to high-speed or
high-speed (2 port) mode to improve port performance.
NOTE:
High-speed (2 port) mode is available only if firmware version 21.06.22 or later is installed on
the disk array.
High-speed mode can be applied to channel adapter boards that satisfy the following conditions:
•
Only one port is planned for use.
•
All ports take the same Fibre topology option (on or off).
•
All ports take FC-AL as the Connection option.
•
All ports use different port addresses and no matching addresses.
•
All ports take the same port attribute (Initiator, RCU target, or Target).
If high-speed mode is applied to a channel adapter board, only one of the ports on the channel adapter
board can be used. This port can exclusively use channel processors and fibre optic processors (FOPs) that
would otherwise be reserved for the other ports. Balancing the workload on the processors can improve
system performance.
If high-speed (2 port) mode is applied to a four-port channel adapter board, two ports out of the four ports
cannot be used. The remaining two ports can exclusively use channel processors and FOPs that would
otherwise be reserved for the other two ports.
CA
19
8F
51
52
83
1E
115
C9
20
88
52
51
84
1D
116
C7
21
84
53
4E
85
1B
117
C6
22
82
54
4D
86
18
118
C5
23
81
55
4C
87
17
119
C3
24
80
56
4B
88
10
120
BC
25
7C
57
4A
89
0F
121
BA
26
7A
58
49
90
08
122
B9
27
79
59
47
91
04
123
B6
28
76
60
46
92
02
124
B5
29
75
61
45
93
01
125
B4
30
74
62
43
94
B3
31
73
63
3C
95
Table 4
AL-PA and loop IDs (continued)
AL-PA
Loop ID
AL-PA
Loop ID
AL-PA
Loop ID
AL-PA
Loop ID