4-20 Upgrading Your System! The onboard SCSI controller supports Low Voltage Differential (LVD)and Ultra-160/M drives. The hard disk SCSI address assignment is:Bay Device SCSI ID Address1 First 1.6 inch Hard Disk (Bottom) 02 Second 1.6 inch Hard Disk 13 Third 1.6 inch Hard Disk 24 Fourth 1.0 inch Hard Disk 35 Fifth 1.0 inch Hard Disk 46 Sixth 1.0 inch Hard Disk 57 Seventh 1.0 inch Hard Disk (Top) 6Installing or Swapping a Hard Disk Drive in a Hot-swap BayThis procedure describes installing a new drive or swapping out a faulty drivefrom one of the seven hot-swap SCSI disk drive bays. The 3 1/2-inch SCSIdrives must use the industry standard 80-pin Single Connector Attachment(SCA) connector. Each drive must be installed in a drive carrier.Note: To order a disk with a carrier, contact your salesrepresentative or dealer.! If installing new drives, follow an installation scheme starting with thebottom drive. Fill the bays bottom to top.! If an individual SCSI drive fault LED (yellow light) is on steadily, thisindicates that the drive has been flagged as faulty by the RAID controller.Follow the procedure described in this section to remove the faulty driveand swap in a good one.Note: ESD can damage disk drives, boards, and otherparts. This system can withstand normal levels ofenvironmental ESD while you are hot-swapping SCSI harddrives. However, we recommend that you do all proceduresin this chapter only at an ESD workstation or provide someESD protection by wearing an antistatic wrist strap attachedto chassis groundany unpainted metal surfaceon yoursystem when handling parts.! CAUTIONDrive manufacturers caution against moving a disk drivethat is still spinning because of possible damage to the drive.