HP ML350 HP ProLiant Servers Troubleshooting Guide - Page 18

DIMM handling guidelines CAUTION: Failure to properly handle DIMMs can cause damage to DIMM components and the system board connector. When handling a DIMM, observe the following guidelines: • Avoid electrostatic discharge (on page 15). • Always hold DIMMs by the side edges only. • Avoid touching the connectors on the bottom of the DIMM. • Never wrap your fingers around a DIMM. • Avoid touching the components on the sides of the DIMM. • Never bend or flex the DIMM. When installing a DIMM, observe the following guidelines: • Before seating the DIMM, align the DIMM with the slot. • To align and seat the DIMM, use two fingers to hold the DIMM along the side edges. • To seat the DIMM, use two fingers to apply gentle pressure along the top of the DIMM. For more information, see the HP website (http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?lang=en&cc=us&objectID=c008 68283&jumpid=reg_R1002_USEN). Hard drive guidelines SAS and SATA hard drive guidelines When adding hard drives to the server, observe the following general guidelines: • The system automatically sets all drive numbers. • If only one hard drive is used, install it in the bay with the lowest drive number. • Drives must be the same capacity to provide the greatest storage space efficiency when drives are grouped together into the same drive array. NOTE: ACU does not support mixing SAS and SATA drives in the same logical volume. SCSI hard drive guidelines • Each SCSI drive must have a unique ID. • The system automatically sets all SCSI IDs. • If only one SCSI hard drive is used, install it in the bay with the lowest number. • Drives must be the same capacity to provide the greatest storage space efficiency when drives are grouped together into the same drive array. Common problem resolution 18