I would like to use this SCSI Terminator (SCSI Terminator 68-pin External Active LVD Differential ) to terminal a Dell Powervault 120t. Will this work for that. Also if it will work, how much for 4 of these terminators.

Hi Jeff - PowerVault 120T DLT4000 is a High Voltage Differential (HVD) device, and must have an HVD SCSI adapter such as Adaptec 2944UW or Adaptec 3944UW. Connection of low voltage differential (LVD) or single-ended SCSI devices to the adapter will cause the bus and/or devices to be nonfunctional. The SCSI terminator you referenced is LVD and is not suitable for the specific device you want to use it on.