IBM TotalStorage SAN256N Director 2045-N16, Руководство по установке и обслуживанию

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Chapter 2. SAN256N director components
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• L (Link) LED -Displays the speed and link status of the I/O port. This LED will be solid
yellow if a device is logged into the TFIO as a 1.0625 Gbps device but there is no data
activity on the port. The LED will flash yellow as 1.0625 Gbps activity streams into or
out of the port. If the device attached and logged in is 2.125 Gbps, then the LED will
be lit green. It will blink green if 2.125 Gbps data is transmitted or received for that
port.
• E (Error) LED -Lights red to indicate that a port error has occurred.
Mirror ports
In order to provide non-disruptive visibility into the Fibre Channel data stream, mirror
ports are employed. The ports are designated as Mirror Transmit (MTx) and Mirror
Receive (MRx). Data only exits these mirror ports, so what MTx means is that data is
being transmitted out of the port being mirrored, and MRx designates the data that is
being received at the port being mirrored.
Each mirror port has two individual port status LED indicators showing the status and
activity of the port.
Like the rest of the Fibre I/O ports, each mirror port has two LED indicators. Rather than
indicating port log in, the solidly lit L LED means that the mirror port is enabled. Again,
flashing LED lights mean activity, although mirror ports only transmit out and don’t
receive any data.
• L (Link) LED - This LED shows the speed and link status of the I/O port. The bicolor
LED will be solid yellow if a device is logged into the TFIO as a 1.0625 Gbps device
but there is no data activity on the port. The LED will flash yellow as 1.0625 Gbps
activity streams out of the port. If the device attached and logged in is 2.125 Gbps,
then the LED will be solid green. It will blink green if 2.125 Gbps data is transmitted at
that port.
• E (Error) LED - this LED lights red to indicate that a port error has occurred.
TSW switch module
Description
The SAN256N director Switch Modules (TSW) provides the physical and logical
connectivity between the TFIO blades installed in the SANC40N cabinet. The TSWs
provide non-blocking any-to-any switching capabilities between the switch fabric ports
and to the TFIO blades.
A typical switch fabric, supporting up to 256 Fibre Channel user ports (at 2.125 Gbps,
per port) uses three TSW modules to provide the switch fabric. Only two TSWs are
required for full bandwidth, 256-port any-to-any connectivity.