User`s guide

2 - Xserve Troubleshooting
General Information
Diagnostics
Four types of diagnostics are available for Xserve:
• status lights
• remote monitoring
• Apple Hardware Test
• Apple Service Diagnostic
For more information, see “Diagnostic Tools” below.
DDR Memory
The server’s logic board includes four memory slots, which accept double data rate (DDR)
SDRAM DIMMs. Memory can be expanded to a maximum of 2 gigabytes.
DIMMs used in the original Xserve must fit these specifications:
• PC2100 DDR SDRAM, also known as DDR-266
• 2.5 volt
• 64-bit wide, 184-pin module
• unbuffered (do not use registered or buffered DRAM)
• maximum height of 1.3 inches
DIMMs used in Xserve (Slot Load) and Xserve (Cluster Node) must fit these
specifications:
• PC2700 DDR SDRAM, also known as DDR-333
• 2.5 volt
• 64-bit wide, 184-pin module
• 16 memory devices maximum
• unbuffered (do not use registered or buffered DRAM)
• maximum height of 1.25 inches
Important: DIMMs from older Macintosh computers are not compatible with Xserve. Do
not use older DIMMs even if they fit into the DIMM slots.
Ports
The standard configuration of the original Xserve includes the following ports on the back
panel: one or two gigabit Ethernet ports, two FireWire 400 ports, two USB ports, a serial
port that supports RS-232 or RS-422 connection, and a VGA monitor port. There is also
one FireWire 400 port on the front of the server.
The standard configuration of Xserve (Slot Load) includes the following ports on the back
panel: one or two gigabit Ethernet ports, two FireWire 800 ports, two USB ports, a serial
port that supports RS-232 connection, and a VGA monitor port. There is also one FireWire
400 port on the front of the server.
The standard configuration of Xserve (Cluster Node) includes the following ports on the
back panel: one gigabit Ethernet port, two FireWire 800 ports, two USB ports, and a serial