PS4000 Hardware Maintenance Maintaining Disks2–4Disk Drive Handling RequirementsHandle disk drives as follows:• Store drives properly. Store replacement disk drives in the packaging inwhich they were shipped. Do not stack disk drives or place anything on top ofa disk drive.• Protect disk drives from electrostatic discharge. Wear an electrostatic wriststrap when handling a disk drive, unless it is protected from electrostaticdischarge.• Handle disk drives carefully. Hold a disk drive only by the plastic part of thecarrier or the handle. Do not drop or jolt a disk drive or force a disk drive intoa slot.• Warm replacement disk drives to room temperature before installation.For example, let a disk drive sit overnight before installing it in an array.• Do not leave disk drive slots empty. Each disk drive slot in an array mustcontain a disk drive assembly or a blank carrier. Operating an array with anempty slot will void your warranty and support contract.• Do not remove a disk drive from its carrier. This action will void yourwarranty and support contract.• Keep the shipping material. Return a failed disk drive to your array supportprovider in the packaging in which the replacement disk drive was shipped.Shipping disk drives in unauthorized packaging may void your warranty.Identifying Failed Disk DrivesA disk drive failure is indicated by:• LEDs on the disk drive. See Interpreting Disk Drive LEDs on page 2-3.• A message on the console, in the event log, or in the Group Manager GUIAlarms panel describes a disk drive failure.Error LED Off No power or normal condition.Red Error condition.Table 2-1: Disk Drive Detail Descriptions (Continued)Callout Item Color Description