Chapter 1. Introducing the IBM xSeries 250 5• Customer support center 24 hours per day, 7 days a week 1• Error codes and messages• Error correcting code (ECC) L2 cache• ECC FSBs• ECC memory• Fast power-on self-test (POST)• Fault-resistant startup• 45°C (113°F) normal operating temperature for hard disk drives• Hot-plug Universal Serial bus (USB) keyboard and mouse• Hot-swap drive bays• Hot-swap hard disk drives• Information and diagnostic light-emitting diode (LED) panels• Integrated Advanced System Management processor subsystem provides controlfor remote system management• Light Path Diagnostics™ (LED panel)• Memory scrubbing and Predictive Failure Analysis™ (PFA) (background and realtime)• Menu-driven setup, system configuration, SCSISelect configuration, anddiagnostic programs• Microcode and diagnostic levels available• NIC failover support• Parity checking on the small computer system interface (SCSI) bus and PCI buses• Power and temperature monitoring• Power Managed - Advanced Configuration and Power Interface (ACPI) level• Power-on self-test (POST)• Power-supply redundancy monitoring• Predictive Failure Analysis™ (PFA) alerts• Processor serial number access• Redundant Ethernet capabilities (with optional adapter)• Redundant hot-swap cooling• Redundant hot-swap power supplies• Remote Connect• Remote system problem-determination support• Standard cables present detection• Standby voltage for system management features and monitoring• System auto-configuring from a configuration menu• System error logging (POST and Advanced System Management processor)• System management monitoring via Intra-Integrated Circuit (I 2 C) bus• Upgradable flash read-only memory (ROM) resident code• Upgradable POST, basic input/output system (BIOS), diagnostics, and AdvancedSystem Management processor microcode• Vital Product Data (VPD) on processors, processor board, I/O board, powersupplies, hard disk drive backplane, power backplane, and voltage regulatormodules (VRMs)• Wake on LAN™ capability• Wake on Ring capability• Windows NT failover support• xSeries Server Management1.Service availability will vary by country. Response time will vary depending on the number and nature of incoming calls.