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display numbers. The diagnostic LED tuns off when the numeric display shows the
storage subsystem enclosure ID. The numeric display shows various diagnostic
codes as the enclosures perform the startup process after each power cycle or
reset. After diagnostics are complete, the current storage subsystem enclosure ID is
displayed.
Diagnostic codes in the form of Lx or Hx, where x is a hexadecimal digit, indicate
storage subsystem state information. In general, these codes are displayed only
when the storage subsystem is in a non-operational state. The storage subsystem
might be non-operational due to a configuration problem (such as mismatched
types), or it might be non-operational due to hardware faults. If the storage
subsystem is non-operational due to system configuration, the storage subsystem
Needs Attention LED is off. If the storage subsystem is non-operational due to a
hardware fault, the storage subsystem Needs Attention LED is on. The definitions
for Lx diagnostic codes are listed in Table 46.
Table 46. Numeric display diagnostic codes
Value Controller State Description
Storage Manager
View
L0 Suspend Mismatched controller
board ID
Needs Attention
condition for board ID
mismatch
L2 Suspend Persistent memory
errors
Needs Attention
condition for offline
controller
L3 Suspend Persistent hardware
errors
Needs Attention
condition for offline
controller
L5 Offline The alternate
controller has
incompatible firmware
but automatic
controller firmware
synchronization (ACS)
cannot be performed
Needs Attention
condition for offline
controller
L7 Suspend/Offline Controller with
different controller
submodel ID inserted.
A DS4200 Express
controller is inserted
in a DS4700 Express
Storage Subsystem.
Needs Attention for
offline controller
L8 Offline Unsupported memory
is present or memory
is not populated in
the correct memory
slots
Need Attention
because the controller
is in offline/failed state
88 Reset Controller is held in
reset by the other
controllers
Needs Attention
condition for offline
controller
Powering off the storage subsystem
The DS4700 Express is designed to run continuously. After you turn it on, do not
turn it off. Turn off the power only in the following situations:
Chapter 4. Operating the storage subsystem 133