
Chapter 1 Introduction
How the TC2201E Works
Quantum TC2201E User’s Guide 3
Figure 3 TC2201E
LEDs
Power/Fault
Ethernet Link Status
Ethernet Activity
iSCSI Activity
iSCSI Link Status
SCSI Activity for Bus 1
SCSI Activity for Bus 0
The LED functionality of the TC2201E is detailed below:
• Power and Fault (Pwr)—This bi-color LED is green to show that power
is currently active and is continuously amber-colored to show that
the TC2201E detects a fault condition in the TC2201E.
• iSCSI (Link/Act)—When lit green, the right indicator signifies a good
iSCSI link on the port. When lit green, the left indicator signifies iSCSI
port activity.
• SCSI Bus (0, 1)—When lit, these green indicators signify SCSI activity
on the bus corresponding to the number of the indicator.
• Ethernet (Link/Act)—When lit green, the right indicator signifies a
good Ethernet link on this management port. When lit green, the left
indicator signifies Ethernet port activity on this management port.
How the TC2201E Works 1
The TC2201E is a router that translates the iSCSI protocol to and from the
SCSI Protocol—transparently transferring commands, data, and status
information—so that devices and hosts can communicate with each other.
Interconnection is provided between two SCSI buses and one or two
iSCSI networks, also making use of iSCSI’s ability to encapsulate SCSI
protocol packets.
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