Compaq ProLiant 8500 ProLiant Server Troubleshooting Guide - Page 69
If you are installing a SCSI hot-plug hard drive, observe the following guidelines
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Hardware Problems CAUTION: Before removing a hot-plug drive, refer to "Unsafe Hot-Plug Drive Replacement Precautions" in this chapter to avoid potential data loss. IMPORTANT: It is recommended that disk drive replacement be performed during low-activity periods whenever possible. In addition, a current valid backup should be available for the logical drives in the array of the drive being replaced, even if drive replacement is being made during server downtime. Each hot-plug SCSI hard drive has three LED indicators located on the front of the drive. The LEDs provide activity, online, and fault status for each corresponding drive, when configured as a part of an array and connected to a powered-up Smart Array Controller. The behavior of the LEDs varies, depending on the status of other drives in the array. Refer to your server-specific user documentation for information about drive statuses. IMPORTANT: If the hard drive fault LED is on, follow the proper troubleshooting procedures, find the cause of the problem, and correct it. One common mistake with failed hot-plug drives in a fault-tolerant array is removing the hot-plug drive for a few seconds and reseating the same drive without dealing with the cause of the problem. This reseating of the hot-plug drive often causes the fault LED to turn off, but does not solve the problem that initially caused it to light. Usually the drive should be replaced, but in some situations a problem could exist with the drive cage, the SCSI cable, or the controller. If you are installing a SCSI hot-plug hard drive, observe the following guidelines: • If only one SCSI hard drive is used, it should be installed in the lowest-numbered bay. If several drives are installed, the drives must be installed adjacent to each other starting from the lowest-numbered bay, with the system-bootable drive installed in the lowest-numbered bay. It is not necessary to set the SCSI ID of a hot-plug hard drive. The backplane board automatically sets the ID when the drive is installed. • To maintain proper system cooling, blanking panels must be installed into unused drive bays. Refer to your server-specific user documentation for details on correct drive placement. HP Servers Troubleshooting Guide 2-27