2. Daily MaintenanceExpress5800/B120f Maintenance Guide16Chapter 1 Installing Windows2.3 Status Indicator LEDsAfter powering on the server or before shutting down the system and powering off the server, check the statusindicator LEDs on the front of the server. For the functions and descriptions of LEDs, see Chapter 1 (5. Namesand Functions of Parts) in User’s Guide. If the indicator shows the server abnormality, contact your salesrepresentative.2.4 BackupWe recommend that you periodically back up the data on hard disk drive. For backup storage devices suitablefor the CPU blade and backup tools, consult with your sales representative.If a RAID array has been configured on your system, back up the RAID configuration data. We also recommendthat you back up it after a rebuilt process required due to hard disk drive failure. For details, see Chapter 2 (5.3Utilities in EXPRESSBUILDER).2.5 CleaningRegularly clean the server to keep it in good condition.WARNINGBe sure to observe the following precautions to use the server safety. Failure to observe theprecautions may cause death or serious injury. For details, see Safety Precautions and RegulatoryNotices.● Do not disassemble, repair, or alter the server.● Disconnect the power plug before cleaning the server.