H3C UniServer R4300 G5, Руководство пользователя

Страница: 142 / 167

12
Figure 9 System maintenance switch
Table 9 System maintenance switch description
Item Description Remarks
1
•
Off (default) —HDM login requires the
username and password of a valid HDM
user account.
•
On —HDM login requires the default
username and password.
For security purposes, turn off the switch after
you complete tasks with the default username
and password as a best practice.
5
•
Off (default) —Normal server startup.
•
On —Restores the default BIOS settings.
To restore the default BIOS settings, turn on
and then turn off the switch. The server starts
up with the default BIOS settings at the next
startup.
CAUTION:
The server cannot start up when the switch is
turned on. To avoid service data loss, stop
running services and power off the server
before turning on the switch.
6
•
Off (default) —Normal server startup.
•
On —Clears all passwords from the
BIOS at server startup.
If this switch is on, the server will clear all the
passwords at each startup. Make sure you turn
off the switch before the next server startup if
you do not need to clear all the passwords.
2, 3, 4, 7,
and 8
Reserved for future use. N/A
DIMM slots
The system board and processor mezzanine board each provide six DIMM channels per processor,
and 12 channels in total, as shown in
Figure 10 . Each channel contains two DIMM slots.