Installation Problems

Most installation problems are caused by incorrectly setting options on the SCSI controller card or the Tandberg tape drive. The general rules are:

• the io address, BIOS address, the dma channel, and the irq line must not have the same value as any other card in the system;
• each device on the SCSI cable must have a unique SCSI id;

  and

• the SCSI bus requires exactly two terminating resistors at the two ends of the cable. It is the air/conductor interface at the ends of the cable, not the peripherals, that must be terminated.

Please refer to the Adaptec and Tandberg manuals which accompany the hardware.

There are a few software traps that may catch you as well. The following examples should cover most of the problems.

Not found error

If you try to execute one of the programs and the shell responds with "not found", the shell is indicating that the program was not found in any of the directories listed in the current search path. The search path is produced from the shell variable "$PATH". To see the path, type:

# echo $PATH <Enter>

You will see a list of directories separated by colons. If the path is correct, you will see a directory that holds the tape backup programs. If the path is correct and the shell continues to respond with "not found" when you use the tape backup commands, it is possible that execute permissions have been turned off. Use the ls program with the "-l" option to see the permissions and then use the program called "chmod" to change them if they are incorrect.

To see the report from SecondCopy, run it with a device name that you know is incorrect. For example:

# secondcopy /dev/st12 name<Enter>

The fix for these conditions is to check the jumper or switch settings on the controller and the drive, and either change them or change the command line arguments.