Item Name Icon Description
(2)
• Front-end ports: Fibre Channel ports, iSCSI ports, or SAS
ports
• MGMT port: Embedded Ethernet/iSCSI port that is typically
used for system management
• REPL port: Embedded iSCSI port that is typically used for
replication to another Storage Center
• Serial port: Used for initial configuration and support
functions
4 Cooling fan fault
indicator (2)
• Off: Normal operation
• Steady amber: Fan fault or the storage system is having a
problem communicating with the PSU
• Blinking amber: PSU is in programming mode
5 AC power fault
indicator (2)
• Off: Normal operation
• Steady Amber: PSU has been removed or the storage
system is having a problem communicating with the PSU
• Blinking amber: PSU is in programming mode
6 AC power status
indicator (2)
• Off: AC power is off, the power is on but the PSU is not in
the storage system, or a hardware fault is possible
• Steady green: AC power is on
• Blinking green: AC power is on and the PSU is in standby
mode
7 DC power fault
indicator (2)
• Off: Normal operation
• Steady amber: PSU has been removed, a DC or other
hardware fault has occurred, or the storage system is
having a problem communicating with the PSU
• Blinking amber: PSU is in programming mode
8 Power socket (2) — Accepts a standard computer power cord.
9 Power switch (2) — Controls power for the storage system. Each PSU has one
switch.
18
About the SC4020 Storage System
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