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hfcmgr lower than version 8.0
This section refers to the hfcmgr version eariler than 8.0. For hfcmgr version higher than or
equal to 8.0, please refer to p153. hfcmgr version can be checked by executing a command,
"hfcmgr -g". For details, refer to "Display General Information" section.
[Detailed description]
Displayed entry (Specified parameter)
Description
Connection Type
(-p ct)
Specify the connection type of a FC path between Hitachi Fibre Channel Adapter and the device attached
to it. If "auto" is specified, this product negotiates with the device connected to it and automatically sets the
connection type to "Arbitrated Loop" or "Point to Point" mode, depending on the situations. Usually, this
parameter does not need to be changed manually.
If LPAR manager is installed and LPAR is used on it, this parameter cannot be changed in the guest OS.
Refer to HVM section in Hitachi Compute Blade User's Guide for details.
Refer to the table below for the descriptions of the displayed values.
Displayed value
Point to Point[fabric]
Point to Point
FC-AL[fabric]
FC-AL
Link Speed
(-p sp)
Specify the link speed of a FC path between Hitachi Fibre Channel Adapter and the device attached to it.
The relations between specified value and the Link Speed are as follows.
<Specified Parameter>
1
2
4
8
If "auto" is specified, this product negotiates with the device connected to it and automatically sets the link
speed to a suitable value, depending on the situations. Usually, this parameter does not need to be
changed manually.
If LPAR manager is installed and LPAR is used on it, this parameter cannot be set in the guest OS. Refer
to HVM section in Hitachi Compute Blade User's Guide for details..
Login Delay Time
(-p lo)
In case it takes a long time to log into the target device, a larger delay time can be set to the adapter port by
using this parameter.
If LPAR manager is installed and LPAR is used on it, this parameter cannot be set in the guest OS. Refer to
HVM section in Hitachi Compute Blade User's Guide for details.
Max Transfer Size
(-p mt)
This parameter defines the maximum data length of a single request. The parameter is set to the optimum
value for a general purpose, so usually this parameter does not need to be changed.
Even if the value is increased and exceeding a certain level, the performance usually remains the same
level, although the memory used by the adapter is increased.
Link Down Time
(-p ld)
Time out value in seconds for the next link up after the driver detected a link down. The parameter is set to
the optimum value for a general purpose, so usually this parameter does not need to be changed.
Description
Point to Point (FC-SW Connection)
Point to Point (Direct Connection)
Fibre Channel Arbitrated Loop (FC-SW Connection)
Fibre Channel Arbitrated Loop (Direct Connection)
<Link Speed>
1Gbps
2Gbps
4Gbps
8Gbps
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