Hp StorageWorks XP10000 Disk Array Bedienungsanleitung PDF herunterladen (Seite 29)

ports where a larger amount of data is transferred, you can optimize system performance. If you set

a slower data transfer speed for ports where a smaller amount of data is transferred, you can also

optimize performance.

For more information, see Specifying a Fibre Channel port's data transfer speed.

Standard, High Speed, and Initiator/External MIX modes

Channel adapter boards have built-in ports used for connecting hosts and an array. Ports can be in

Standard, High Speed, or Initiator/External MIX mode, although all ports are in Standard mode

by default. If a port satisﬁes certain conditions, you can apply High Speed mode to improve port

performance. If a port satisﬁes certain conditions, you can apply Initiator/External MIX mode so that one

part can be used both as an initiator port for Continuous Access XP or Continuous Access XP Journal and

as an extern

al port applied to a remote command device. For instructions on deﬁning a remote command

device, see the HP StorageWorks External Storage XP user guide.

You must apply High Speed or Initiator/External MIX mode to groups of four ports, not to individual

ports. In LUN Manager terminology, each group of four ports is referred to as a port block.Youcan

apply High Speed or Initiator/External MIX mode to each port block.

When you apply High Speed or Initiator/External MIX mode, two of the four ports in a port block must

satisfy the following conditions. Also, the other two ports must satisfy the following conditions:

• The two ports have the same Fabric option (Enable or Disable).

• The two po

rtshaveFC-ALastheConnectionoption.

• The two ports use different port addresses and no matching addresses.

• When you apply High Speed mode, the two ports have the same port attribute (Initiator, RCU

target,

or Target).

• When you apply Initiator/External MIX mode, one of the two ports takes the initiator attribute

and the other port takes the external attribute.

• Only one

of the ports is used for connecting the host.

Figure

8 shows an example of High Speed or Initiator/External MIX mode applied to one or two port

blocks

when the channel adapter board has eight ports. If the channel adapter board has 16 ports,

you ca

n apply High Speed or Initiator/External MIX mode in the same way, even though there are

four p

ort blocks.

HP StorageWorks LUN Conﬁguration and Security Manager XP user guide for the

XP12000/XP10000/SVS200

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