Dell PowerVault 50F Dell PowerVault 56F 16-Port Fibre Channel Switch Inst - Page 45

Per_frame Route Priority

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The operating modes are determined by the host adapter. The six operating modes for the switch are shown in Table 3-5: Non-SCSI Tachyon Mode When set, multiple sequences from different sources are interleaved to Tachyon-based controllers at Sequence boundaries rather than at frame boundaries, resulting in better performance from Tachyon-based controllers. Isolated Operation Setting this mode isolates the switch from the rest of the fabric. Disable Device Probing When this is set, devices that do not register themselves with the Name Server will not be present in the Name Server data base. VC-Encoded Address Mode When this mode is set, frame source and destination addresses utilize an address format compatible with some first-generation switches. Disable Translative Mode This setting is only relevant if VC Encoded Address Mode is also set. When set, this maintains explicit address compatibility with the PowerVault 50F switches. Per_frame Route Priority In addition to the 8 virtual channels used in frame routing priority, support is also available for perframe based prioritization when this value is set. When set, the virtual channel ID will be used in conjunction with a frame header to form the final virtual channel ID. The administrator determines the adapter in use, then sets the switch for the corresponding operating mode. The switch provides the ability to tune the switch in a specific application. The first two virtual channels are reserved for the switch's internal functions and are not available. NOTE: The default virtual channel settings are optimized for switch performance in most applications. For some applications, changing from default values may improve performance. If changes are made without fully understanding these parameters, the switch performance will be degraded considerably. support.dell.com Managing the PowerVault 56F 16-Port Fibre Channel Switch 3-11

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support.dell.com
Managing the PowerVault 56F 16-Port Fibre Channel Switch
3-11
¸¹º»¼½µ¿Ã·(¾Æº
The operating modes are determined by the host adapter. The six operating modes
for the switch are shown in Table 3-5:
The administrator determines the adapter in use, then sets the switch for the corre-
sponding operating mode.
'µ»½²¼´·°È¼¿¿º´Â
The switch provides the ability to tune the switch in a specific application.
The first two virtual channels are reserved for the switch
’
s internal functions and are
not available.
NOTE: The default virtual channel settings are optimized for switch performance in
most applications. For some applications, changing from default values may improve
performance. If changes are made without fully understanding these parameters, the
switch performance will be degraded considerably.
È¿ÉÀ¶·$¹Âº··Î϶µ¿Á²Ç³·&¼'¶·Í¶%²Ç²Á²¼ÇË
À¾Ëµ
̵ͻμ¹·¼¾¿
Non-SCSI Tachyon Mode
When set, multiple sequences from different
sources are interleaved to Tachyon-based control-
lers at Sequence boundaries rather than at frame
boundaries, resulting in better performance from
Tachyon-based controllers.
Isolated Operation
Setting this mode isolates the switch from the rest
of the fabric.
Disable Device Probing
When this is set, devices that do not register them-
selves with the Name Server will not be present in
the Name Server data base.
VC-Encoded Address Mode
When this mode is set, frame source and destina-
tion addresses utilize an address format compatible
with some first-generation switches.
Disable Translative Mode
This setting is only relevant if VC Encoded Address
Mode is also set. When set, this maintains explicit
address compatibility with the PowerVault 50F
switches.
Per_frame Route Priority
In addition to the 8 virtual channels used in frame
routing priority, support is also available for per-
frame based prioritization when this value is set.
When set, the virtual channel ID will be used in
conjunction with a frame header to form the final
virtual channel ID.