Host And Drive Channel Led Definitions - IBM DS4200 Installation, User's, And Maintenance Manual

Table 26. Rear controller LEDs, controls, and connectors (continued)
Number
9
10
11
12
13
The L1 and L2 LEDs for each host and drive channel combine to indicate the status
and the operating speed of each host and drive channel.
Table 27. Host and drive channel LED definitions
L1
Off
On
Off
92
IBM System Storage DS4200 Express Storage Subsystem: Installation, User's and Maintenance Guide
LED
Ethernet Link Activity
Drive Channel Port
Bypass
(One LED per port)
Note: The drive channel
consists of two FC ports.
This LED indicates the
drive port bypass status
of one of the two FC
ports that comprise a
drive channel. The LED
marked 13 shows the
status of the other port.
Drive Channel Speed - L1 See Table 27.
Drive Channel Speed - L2 See Table 27.
Drive Channel Port 2
Bypass
(One LED per port)
Note: The drive channel
consists of two FC ports.
This LED indicates the
drive port bypass status
of one of the two FC
ports that comprise a
drive channel. The LED
marked 10 shows the
status of the other port.
L2 Definition
Off When both LEDs for host or drive channel ports are off (unlit), this indicates
one or more of the following conditions:
v The host or drive channel ports are bad or the SFPs are faulty.
v An SFP module is inserted with no fibre channel cable attached.
Note: If the SFP is inserted in a drive port with no fibre channel attached,
the associated drive port bypassed LED will also be lit. In addition, the L1
and L2 LEDs will be unlit.
v No SFP module is inserted in one or both of the host or drive ports in the
channel.
Off The host port is operating at 1 Gbps.
Note: This pattern is not applicable in the drive port because the DS4200
Express does not support 1 Gbps fibre channel speed.
On The host or drive channel port is operating at 2 Gbps.
Normal Status
On - link established
Off - no link established
Blinking - activity
Off
(Also off if no SFP
connected)
Off
(Also off if no SFP
connected)
Problem Status
Not applicable
On - No valid device
detected and port is
bypassed
On - No valid device
detected and port is
bypassed