APC AP9606 Specifications download pdf (Page 79)

Chapter 4. The command file UPS.CMD 71

According to recommendations from Microsoft, there should no application

resources belonging to the Cluster Group (see

http://support.microsoft.com/support/kb/articles/Q168/9/48.ASP). It is not

necessary to set the Cluster Group offline. Hence, it is not required to bring the

Cluster Group online after restart; the cluster name and IP address will be

accessible via network automatically.

The group with the quorum disk is a special case because the quorum disk itself

cannot be brought offline. This does not matter because the quorum disk should

be used for the quorum log only. Thus the quorum disk will not belong to an

application-related resource group. In our example, we created a separate

Quorum group. Another usual way is to move the quorum disk into the Cluster

Group (as default with Windows 2000). However, the quorum resource must be

ignored by the command file.

The dot after the command cluster in line 164 denotes the cluster to which the

local node belongs. The name of the group has to be specified in quotation marks

after the parameter GROUP. As action /OFFLINE takes place. In contrast to the

case of moving groups (4.2.1, “MoveClusterGroups” on page 69), here the

commands are executed synchronously. If the command does not complete

within 30 seconds successfully, the command is aborted. The wait time is

application-specific and must be adjusted to the configuration. The next line

allows a low-level error control: Error code 5023 means that the group is currently

in “Online Pending” status. Setting the group offline can take place as soon as the

pending phase is over.

The command file utilizes SHUTGUI.EXE (instead of the PowerChute PLUS Shut

Down Server action) to ensure that the operating system shutdown begins after

resource handling (independent of PowerChute PLUS timers).

With the application SHUTGUI.EXE from the Microsoft Windows NT Resource

Kit, shutdown of the operating system is initiated finally (line 182).

182 C:\UPS_CMD\SHUTGUI.EXE /L /T:120 "A power loss has occurred !" /C

The parameter /L forces the local machine to shut down with a delay of /T

seconds. During shutdown, the message in quotation marks ("A power loss has

occurred !") will be displayed. /C means that applications will be forced to stop

without any input.

Note: If you use the /C parameter, Windows NT ignores the application’s option to

save data that may have changed. You will not see any File-Save dialog box

because Windows NT forces the application to stop immediately. This will result

in loss of all data previously not saved.

4.3 Parameter SingleUPSOnBattery

As explained in 3.2, “Single power line solutions” on page 31, and 3.3, “Solutions

with double power lines” on page 51, the same command file handles

configurations with one UPS as well as two UPS units. In both scenarios,

PowerChute PLUS launches the command file at the UPS on Battery event (after

the UPS On Battery Delay). The startup parameter indicates which type of

configuration has to been handled (for example with one UPS; see Figure 35 on

page 41).

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APC AP9606 Specifications Page 79

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