Tape Device Re-write count. This is the number of times blocks had to be re-written to the device. This value is maintained since the Tape Hardware Interface driver was loaded. Re-write errors may occasionally occur. If this value should rise dramatically, you may need to clean the device. If you continue to have re-writes, you may have a problem. Some common causes include radio frequency interference (RFI) on the bus cables, bad or missing terminating resisters on the drives or having more than one device with the same SCSI ID. Insure the bus cable is free of obstructions and that the devices on the bus are properly configured.