Item Name Panel Description
– Amber (flashing) — Arrays in impacted
state
• Cable Fault
– Amber — Cable fault
3 Drawer-specific
left and right side
expansion
enclosure activity
indicators
Activity Bar Graph — Six variable-intensity
LEDs dynamically displaying access of the
drives in that specific drawer
4 Status indicator
for storage
system
• Unit ID Display — Numerical display
primarily used to display the unit
identification number
• Input Switch — Not used
• Power On/Standby
– Off — Expansion enclosure does not
have power
– Green — Expansion enclosure is on
(operational)
– Amber — Expansion enclosure is in
standby mode (not operational)
• Module Fault
– Amber — Hardware fault (an LED may
be lit on a PSU, drawer, DDIC, fan
module, or I/O module indicating the
part at fault)
• Logical Status:
– Amber — Change of status or fault from
something other than the storage
system itself (this status is typically
associated with a disk drive as indicated
by its own fault LED)
• Drawer 1 Fault
– Amber — Drive, cable, or sideplane fault
has occurred in drawer 1
• Drawer 2 Fault
– Amber — Drive, cable, or sideplane fault
has occurred in drawer 2
30
About the SC4020 Storage System