Network communication failure - remote station


If the network communication fails

If the network communication fails while a method is running, the remote station will lose control of the system. Then the following will happen:

  • The run continues under the control of the local station.

  • Results that were destined for network drives cannot be saved in their correct folders. Instead, the results are saved in the Failed folder on the local station.


Failed folder and result file

Failed folder path

If C: is the UNICORN installation drive, the path to the Failed folder is C:\Unicorn\Local\Fil\Failed. There the results can be retrieved when the run is completed.

Result file name

The name of the result file will be the same as the original result file name. Files with the same name base are distinguished by an incremental serial number, in the same way as result files in any other folder.


How to retrieve the results from the Failed folder

Follow the instructions in the table below to retrieve the results from the Failed folder:

Step

Action

1

Start UNICORN (unless already started) on the local station connected to the system that was run.

2

Log on as an authorized user with access to the Failed folder.

3

  • Reestablish the network communication.

  • Move the result file from the Failed folder to a suitable location on the network server where it is accessible from remote stations.


Policies for access to the Failed folder

The system administrator may choose one of the following policies regarding access to the Failed folder:

  • To grant access to the Failed folder to all users

  • To grant access to the Failed folder only to one or a few users

In either case, it is sufficient to grant access to C:\Unicorn\Local\Fil\Failed since this is the path to the Failed folder on all local stations.

Access to all users

If the system administrator grants access to the Failed folder to all users, it will have the following implications:

  • The individual user gets the responsibility to retrieve his or her own result files and to delete old files from the Failed folder.

  • Any user will be able to examine, copy, move and delete the other users' results in the Failed folder.

  • The Failed folder can be used to temporarily store methods and results from runs performed from the local station when the network is not running.

Access to a few users

If the system administrator grants access to the Failed folder to only one or a few users, it will have the following implications:

  • One or a few users will have the responsibility for retrieving the result files and deleting the old files from the Failed folder.

  • The user(s) with access to the Failed folder should also have access to other users' home folders to be able to copy or move result files to suitable destinations.

Note: This policy should be used if the installation requires restricted access to users' result files.

2005-06-15