Dell PowerEdge M420 Hardware Owner's Manual - Page 114

Table 1-26. Blade Messages (continued) Message Causes Corrective Actions DIMMs should be installed in pairs. Pairs must be matched in size, speed, and technology. Mismatched or unmatched DIMMs installed; faulty or improperly installed memory modules. The system operates in a degraded mode with reduced ECC protection. Only memory installed in channel 0 is accessible. Ensure that all pairs of memory modules are of the same type and size and that they are properly installed. See "System Memory" on page 159. If the problem persists, see "Troubleshooting Blade Memory" on page 297. DIMMs must be populated in sequential order beginning with slot 1. The following DIMM is electrically isolated: DIMM x. The specified DIMM is inaccessible to the system due to its location. DIMMs must be populated in sequential order, beginning with slot 1. Populate two, four, or eight DIMMs sequentially. DIMM pairs must be matched in size, speed, and technology. The following DIMM pair is mismatched: DIMM [x] and DIMM [y]. Mismatched or Ensure that all pairs of unmatched DIMMs memory modules are of the installed; faulty or same type and size, and that improperly seated memory they are properly installed. modules. See "System Memory" on page 159 and "Troubleshooting Blade Memory" on page 297. Diskette read failure. Faulty or improperly inserted diskette. Replace the diskette. Drive not ready. Diskette missing or improperly inserted in diskette drive. Reinsert or replace the diskette. 114 About Your System