IBM @server xSeries 343, Product Manual

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xSeries 343 Product Guide
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ACPI
The server board supports the Advanced Configuration and Power Interface (ACPI) as defined by
the ACPI 2.0 specification. An ACPI-aware operating system can put the system into a state where
the hard drives spin down, the system fans stop, and all processing is halted. However, the power
supply will still be on and the processors will still be dissipating some power, so the power supply
fans will still run.
The IBM
®
xSeries 343 server board supports sleep states s0, s1, s4, and s5:
•
s0: Normal running state.
•
s1: Processor sleep state. No context will be lost in this state and the processor caches will
maintain coherency.
•
s4: Hibernate or Save to Disk. The memory and machine state are saved to disk. Pressing the
power button or other wakeup event will restore the system state from the disk and resume normal
operation. This assumes that no hardware changes have been made to the system while it was off.
•
s5: Soft off. Only the RTC section of the CSB and the BMC are running in this state. No context
is saved by the OS or hardware.
CAUTION
The system is off only when the AC power cord is disconnected.
Security
Software Locks
The BIOS Setup and the System Setup Utility provide a number of security features to prevent
unauthorized or accidental access to the system. Once the security measures are enabled, you can
access the system only after you enter the correct password(s). For example:
•
Enable the keyboard lockout timer so that the server requires a password to reactivate the
keyboard and mouse after a specified time out period

1 to 120 minutes.
•
Set and enable an administrator password.
•
Set and enable a user password.
•
Set secure mode to prevent keyboard or mouse input and to prevent use of the front panel reset
and power switches.
•
Activate a hot key combination to enter secure mode quickly.
•
Disable writing to the diskette drive when secure mode is set.
•
Disable access to the boot sector of the operating system hard disk drive.
Using Passwords
You can set the user password, the supervisor password, or both passwords.
If only the user password is set, you:
•
Must enter the user password to enter BIOS Setup or the System Setup Utility.
•
Must enter the user password to boot the server if “Password on Boot” is enabled in either the
BIOS Setup or System Setup Utility.
•
Must enter the user password to exit secure mode.
If only the supervisor password is set, you:
•
Must enter the administrator password to enter BIOS Setup or the System Setup Utility.
•
Must enter the administrator password to boot the server if “Password on Boot” is enabled in
either the BIOS Setup or System Setup Utility.