Specifications
MDR User Guide 29
5.3 Connecting the MDR Shell to the disk subsystem
For more details on how to configure the MDR Host Software for direct read-
back/preload, please refer to Chapter 7: Configuration Files.
Currently, the items to modify are present in the configuration file
mdr.ini, section
StorageInfo and are the following: Disks, DiskTransferBlockSize, FcLoopRetry-
Time
and UseHostFcAdapter.
In order to establish a connection between the MDR Shell (running on the host software)
and the MDR disk subsystem (as shown above), the user has to:
• Configure the items in the MDR host configuration file (
mdr.ini file),
• Run the MDR Shell program (see section 4.3 for a more detailed description),
• Press
<Enter> after the prompt: MDR Server hostname or IP address.
Remarks:
• In order to detect the FC disks, Windows and Solaris require the MDR Shell to have
the administrator (or root) privileges.
In order to use the FC adapter installed in the Host computer, the
UseHostFcAdapter
parameter in the Host mdr.ini file must be set to ‘1’.
The MDR Shell then looks for the MDR disk subsystem and the prompt will appear, in-
dicating that it is now connected to the MDR disk subsystem and ready to receive com-
mands from the user.
If the configuration file items do not match the physical MDR disk subsystem configura-
tion then an appropriate error message will be shown.
5.3.1 Unavailable MDR Shell commands
Because the MDR Shell is connected directly to the disk subsystem, the user does not
have the possibility to use all the commands. The following commands are not available:
• record, playback and stop:
A record/playback operation can be only be performed by the MDR Server.
•
selftest:
It is not currently possible to test the MDR disk subsystem from the MDR Shell in
this configuration.
•
format-disk:
It is not currently possible to format the MDR disk subsystem from the MDR Shell in
this configuration.
•
copy (when using the parameters disks tape and tape disks):
No tape device is attached to the host computer. Therefore, this operation is not pos-
sible.
• reset:
This command applies only to the MDR Server. Therefore, this operation is not
possible.
Note: The same restrictions apply to the MDR API functions corresponding to these
MDR commands.
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com