User guide
Before running MDM:
• Your system must be properly configured.
• The Digital Storage Systems Interconnect (DSSI) cable connecting the
multiple hosts must be installed.
You must run MDM separately for each host. For TKxx based systems, the
procedure to use depends on whether one host is a tapeless system (no tape
drive) or each host has its own tape drive.
Use the procedure in Section 2.2.3.1 to prepare to run MDM in a DSSI
VAXcluster with one TKxx tape drive.
Use the procedure in Section 2.2.3.2 to prepare to run MDM in a DSSI
VAXcluster with a TKxx tape drive in each host.
2.2.3.1 MDM on a DSSI VAXcluster with One TKxx Tape Drive
To run MDM on a DSSI VAXcluster with one TKxx tape drive (one or more
tapeless hosts):
• Use the MDM Hard Disk Kit.
• Complete the Diagnostic Software Installation Acknowledgment.
• Install the kit on a hard disk or an RF-series ISE as described in the
MicroVAX Diagnostic Monitor Hard Disk User’s Guide.
After the installation is complete, use the following procedure to run MDM.
1. If software is installed on your system:
a. Warn all users to log off.
b. Perform system shutdown as described in your software manuals.
2. Set the Break Enable/Disable switch on the host to be tested to enable (up).
3. Insert a blank tape cartridge into the tape drive and lock it in place.
4. Restart the host to be tested.
5. Enter one of these commands, where u is the unit number of the disk
containing the Hard Disk Kit and c is the controller port letter.
BOOT/100 DIAu (CPU-based DSSI)
BOOT/100 DUcu (KFQSA adapter or KDA50 controller)
The system prompts for the boot file name by displaying
Bootfile:
6. Enter one of these file names.
[SYS0.SYSEXE]MDMSHA.SYS (CPU-based DSSI)
2–4 Running the Diagnostic Monitor










