IBM System Storage Subsystem DS5020 - Manual (Page 139)

Table 17. Numeric display diagnostic codes (continued)
Value Controller State Description
LA Suspended Reserved
LB Suspended Host card configuration error
LC Suspended Persistent cache backup
configuration error
LD Suspended Mixed cache memory DIMMs
LE Suspended Uncertified cache memory
DIMM sizes
LF Suspended Lockdown with limited
SYMbol support
LH Suspended Controller firmware mismatch
Powering off the storage subsystem
The DS5020 is designed to run continuously. After you turn it on, do not turn it off.
Turn off the power only in the following situations:
v Instructions in a hardware or software procedure require that you turn off the
power.
v An IBM technical support representative instructs you to turn off the power.
v A power outage or emergency situation occurs, see “Restoring power after an
unexpected shutdown” on page 112.
Turning off the storage subsystem
Use the following procedure to turn off the power for the DS5020.
Attention: Except in an emergency, never turn off the power if any Needs
Attention LEDs are on. Correct the fault before you turn off the power. Use the DS
Storage Manager client and the Needs Attention LEDs to check the overall status of
the DS5020. All LEDs should be green on the front of the storage subsystem. If
they are not, use the DS Storage Manager client to diagnose the problem. This
ensures that the DS5020 will power up correctly later.
The DS5020 is designed to run continuously. After you turn on the DS5020, do not
turn it off. Turn off the power only in the following situations:
v Instructions in a hardware or software procedure require that you turn off the
power.
v An IBM technical support representative instructs you to turn off the power.
v A power outage or emergency situation occurs, see “Restoring power after an
unexpected shutdown” on page 112.
Chapter 4. Operating the storage subsystem 109