hardware fault, the storage subsystem Needs Attention LED is on. The definitions
for Lx diagnostic codes are listed in Table 7.
Table 7. Controller numeric display diagnostic codes
Value Description
L0 Mismatched controller board ID.
L1 Missing interconnect canister.
L2 Persistent memory errors.
L3 Persistent hardware errors.
L4 Persistent data protection errors.
L5 ACS failure.
L6 Unsupported host card.
L7 Submodel identifier not set or mismatched.
L8 Memory configuration error.
L9 Link speed mismatch.
LA Reserved.
LB Host card configuration error.
LC Persistent cache backup configuration error.
LD Mixed cache memory DIMMs.
LE Uncertified cache memory DIMM sizes.
LF Lockdown with limited SYMbol support.
LH Controller firmware mismatch.
Table 8. ESM numeric display diagnostic codes
Value Description
FF ESM Boot Diagnostic executing.
88 This ESM is being held in Reset by the other ESM.
AA ESM-A application is booting up.
bb ESM-B application is booting up.
L0 Mismatched ESM types.
L2 Persistent memory errors.
L3 Persistent hardware errors.
L9 Over Temperature.
LL Cannot read midplane EEPROMs.
LP Missing Drive Port Mapping table.
Ln ESM not valid for enclosure.
H2 Invalid/Incomplete Configuration.
LF Lockdown with limited SYMbol support.
LH Controller firmware mismatch.
H3 Maximum Reboot Attempts Exceeded.
H4 Cannot Communicate with Other ESM.
H5 Midplane Harness Failure.
H6 Firmware Failure.
Chapter 4. Operating the storage subsystem and expansion enclosure 79
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