Out-of-band methodUse this information to recover the server firmware and restore the serveroperation to the primary bank.See the IMM2 documentation (Integrated Management Module II User's Guide) atwww.ibm.com/support/entry/portal/docdisplay?lndocid=MIGR-5089484&brandind=5000008.Automated boot recovery (ABR)While the server is starting, if the integrated management module II detectsproblems with the server firmware in the primary bank, the server automaticallyswitches to the backup firmware bank and gives you the opportunity to recoverthe firmware in the primary bank.About this taskFor instructions for recovering the UEFI firmware, see “Recovering the serverfirmware (UEFI update failure)” on page 179. After you have recovered thefirmware in the primary bank, complete the following steps:Procedure1. Restart the server.2. When the prompt Press F3 to restore to primary is displayed, press F3 tostart the server from the primary bank.Nx-boot failureConfiguration changes, such as added devices or adapter firmware updates, andfirmware or application code problems can cause the server to fail POST (thepower-on self-test).If this occurs, the server responds in either of the following ways:v The server restarts automatically and attempts POST again.v The server hangs, and you must manually restart the server for the server toattempt POST again.After a specified number of consecutive attempts (automatic or manual), theNx-boot failure feature causes the server to revert to the default UEFI configurationand start the Setup utility so that you can make the necessary corrections to theconfiguration and restart the server. If the server is unable to successfully completePOST with the default configuration, there might be a problem with the systemboard.To specify the number of consecutive restart attempts that will trigger the Nx-bootfailure feature, in the Setup utility, click System Settings > Recovery > POSTAttempts > POST Attempts Limit. The available options are 3, 6, 9, and 255(disable Nx-boot failure).182 IBM System x3550 M4 Type 7914: Installation and Service Guide
