IBM System x3550 M5 Type 5463 User Manual

Table 4. System pulse LEDs (continued)
LED Description Action
IMM heartbeat IMM2.1.1 heartbeat boot process. The following steps describe the different
stages of the IMM2.1 heartbeat sequencing
process.
1. When this LED is blinking fast
(approximately 4Hz), this indicates, that the
IMM2.1 code is in the loading process.
2. When this LED goes off momentarily, this
indicates that the IMM2.1 code has loaded
completely.
3. When this LED goes off momentarily and
then starts blinking slowing (approximately
1Hz), this indicates that IMM2.1 is fully
operational. You can now press the
power-control button to power-on the
server.
4. If this LED does not blink within 30
seconds of connecting a power source to
the server, (trained technician only) replace
the system board.
PCI riser-card LEDs
Use this information to view PCI riser-card LEDs.
The following illustration shows the location of the PCI riser-card LEDs.
72 IBM System x3550 M5 Type 5463: Installation and Service Guide

IBM System x3550 M5 Type 5463 Specifications

General

Form Factor	1U rack
Memory Slots	24 DIMM slots
Processor	Intel Xeon E5-2600 v3/v4 product family
Memory	Up to 1.5TB DDR4
Storage	Up to 8x 2.5" HDD/SSD or 4x 3.5" HDD
RAID Support	RAID 0, 1, 10
Network Interface	Four integrated Gigabit Ethernet ports (10/100/1000 Mbps)
Expansion Slots	Up to 3 PCIe 3.0 slots
Power Supply	Dual redundant hot-swap 550W, 750W, or 900W
Operating Systems Supported	Microsoft Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, VMware vSphere