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13.1 Understanding the Differences Between Locked Mode and Service Mode


13.1 Understanding the Differences Between Locked Mode and Service Mode
The SPARC M12/M10 systems have two operating modes: Locked mode and Service mode.
  1. Locked mode
    Locked mode is dedicated to regular operation. In this mode, the Mode switch has been slid to the "Locked" position.
    The user accounts configured with the XSCF are used for work. The range of work varies depending on the user account.
    In Locked mode, power cannot easily be turned off since a mechanism prevents mistaken power-off by users. The POWER switch on the operation panel can be used to turn on but not turn off the power.
  2. Service mode
    Service mode is dedicated to maintenance work. In this mode, the Mode switch has been slid to the "Service" position. Maintenance that requires the stopping of the whole system has to be performed in Service mode.
Control for power-on and power-off in Locked mode and Service mode affects not only operations from the POWER switch but also power control from a remote location, automatic power control, and other control. Table 13-1 shows differences in power control between the two modes.
Table 13-1  Differences in Power Control Between Locked Mode and Service Mode
Item Operating Mode
Locked Mode Service Mode
Power-on by POWER switch Power-on permitted Power-on not permitted
Power-off by POWER switch Power-off not permitted Power-off permitted
A long press (4 seconds or longer) starts power-off processing.
Break signal Depends on the setting
(The default is enabled.)
Signal sent to the control domain
Power-on during recovery Power turned on Power not turned on
Alive Check Depends on the setting
(The default is enabled.)
Disabled
Reaction when Host Watchdog times out Depends on the setting
(The default is PPAR reset.)
Depends on the setting
(The default is PPAR reset.)
Automatic start-stop of Oracle Solaris Depends on the setting
(The default is automatic start.)
Depends on the setting
(The default is automatic start.) (*1)
Automatic scheduled power-on Power-on permitted Power-on not permitted
Automatic scheduled power-off Power-off permitted Power-off not permitted
Remote power management Control permitted Control with other hosts not permitted
*1 For details of the automatic start-stop of Oracle Solaris, see "6.4 Suppressing Starting Oracle Solaris at Power-on."
Of the items controlled in Locked mode and Service mode, the ones shown with "Depends on the setting" can be configured by the setpparmode command of the XSCF firmware.