HP LH4r HP Netserver LC 2000 Installation Guide - Page 44
Mass Storage Guidelines
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Chapter 4 Installing Mass Storage Devices Mass Storage Guidelines • General Guidelines ◊ Use care when unpacking and handling the disk drives. The hard disk drives are very susceptible to mechanical shock and can be easily damaged by a drop as short as one-quarter of an inch. If the drop would crack an egg, it will damage the drive. ◊ Do not stack drives. ◊ Do not use high voltage differential (HVD) SCSI devices on any of the SCSI channels or damage will occur. Use only Single-Ended (SE) or Low-Voltage Differential (LVD) devices. • SCSI Device Selection ◊ Ensure the SCSI devices you install in both Hot Swap and non-Hot Swap-drive bays do not have terminations installed. The non-Hot Swap SCSI drives are connected to a terminated cable and the Hot Swap cage provides the termination for any unused slots in the cage. ◊ Use only HP LVD SCSI 3.5-inch hard disk drives for the Hot Swap drive cage. You can use a combination of half-height (1.6-inch) and low-profile (1.0 inch) drives in the Hot Swap cage, but be sure to use spacers and filler panels to cover any openings. The HP Hot Swap drives come set for LVD SCSI operation and without device ID or termination. Do not change these settings. ◊ Use only 3.5-inch or 5.25-inch single-ended (SE) SCSI devices for the non-Hot Swap shelves. The available space in the non-Hot Swap shelves supports two half-height (1.6 inch) devices. You can order HP mounting kits for removable media devices or trays for 3.5-inch hard disk drives (half-height). You may use narrow/wide SCSI adapters on these devices. CAUTION When installing Hot Swap drives, you must install one drive spacer with each half-height (1.6 inch) drive and ensure there are no drive gaps in the cage to provide proper ventilation. 36