EMS consists of components that are standard features of Windows Server 2008 and Windows
Server 2008 R2, and to which console redirection functionality has been added. EMS also includes
the Special Administration Console (SAC), which is unique to it. You access this console from a
headless system using terminal emulation software such as telnet and PuTTY.
When SAC is active, it displays the SAC prompt (
SAC>
). SAC provides the following commands
you can use to perform a number of management tasks that help return the system to a normally
functioning state:
ch
Lists all channels.
cmd
Creates Windows command-prompt channels. To use a command-prompt
channel, you must provide valid login credentials. You must log in to each
command-prompt instance. Press
ESC+TAB
to switch back and forth between
the command prompt channels and SAC. If a command prompt channel
becomes unresponsive, use the
K
(end) command to close it. You can then
open another command-prompt channel.
crashdump
Manually generates a stop error message and forces a memory dump file
to be created. A stop error is a serious error that affects the operating system
and that could place data at risk. The operating system generates an obvious
message, a screen with the stop error, rather than continuing on and possibly
corrupting data. Also called a fatal system error.
D
Dumps the kernel log.
F
Switches between showing processes only or processes and threads in output
from the
t-list
command.
I
Sets or views the IP address of the server. If no parameters are passed, this
command lists IP information. You can display or set the IP address, subnet
mask, and gateway of a given network interface device by providing the
network number, IP address, and subnet information. To do so, use the
following format:
I network# IPaddress subnet
KPID
Ends the given process.
PID
is the process identification number you specify.
LPID
Lowers the priority of a process (and any associated child processes) to the
lowest possible level.
lock
Restricts access to EMS command-prompt channels.
MPID MB-allow
Limits the memory usage of a process (and any associated child processes)
to a specified number of megabytes.
MB
is the number of megabytes you
specify.
P
Switches paging on and off for the
t
command output.
RPID
Raises the priority of a process and associated child processes.
reg_add
Allows registry edits from the SAC.
restart
Restarts the server.
shutdown
Shuts down the server. Do not use this command unless you can be physically
present at the computer when you are ready to restart it.
T
Lists the processes and threads that are currently running.
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Special Administration Console
