User`s guide

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Chapter 5
5. Installing or Replacing Drives and Power Supplies
SCSI Hard Disk Drives
The system supports a variety of low-voltage differential (LVD) and single-ended SCSI
devices. As shipped from the factory, the system might contain only a single hard disk
drive (sometimes called the “systemdisk”). Contact yoursales or service representative
for a list of optional approved SCSI devices.
Caution: Electrostatic discharge (ESD): ESD can damage disk drives, add-in boards,
and other components. The server can withstand normal levels of environmental ESD
while you are hot-swapping SCSI hard disk drives. However, we recommend doing all
procedures in this manual only at an ESD-protected workstation. If one is not available,
you can provide some ESD protection by wearing an antistatic wrist strap attached to
chassis ground of the server—any unpainted metal surface—when handling
components.
Mounting a SCSI Hard Disk Drive in a Carrier
The SGI 1400 servers use an integrated drive sled and heatsink assembly for installing
harddisks into the server. If youplan to use SCSI driveswhose power exceeds 15 watts,
you must have heatsinks on those drives.
1. Remove the 3.5-inch hard drive from its wrapper and place it on an antistatic
surface.
2. Record the drive model and serial number in your equipment log.