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I/O Subsystems Intel® Server Board Set SE8500HW4
Revision 1.0
Intel order number D22893-001
14
3.1.5 PCI Hot Plug* Support
PCI Hot Plug* is the concept of removing a standard PCI adapter card from a system without
stopping the software or powering down the system as a whole.
In the Intel
®
Server Board Set SE8500HW4, PCI Slot 2 supports the PCI Hot-Plug Specification,
Revision 1.1 and is configured so that the PXH isolates the slot from the PCI bus when no
adapter is present. The four PCI Express slots support the PCI Express Base Specification,
Revision 1.0a.
3.1.5.1 Hardware Components
The Intel
®
Server Board Set SE8500HW4 contains buttons and LEDs to assist a user for hot
plug operations. Buttons provide isolation circuitry to physically disconnect the hot plug adapter
from the PCI buses while LEDs provide slot power and status. The LEDs have enough luminous
intensity to pass through system-level light pipes and be visible at the top of a system. An
attention button can be used to invoke a hot-plug sequence to remove or add an adapter
without the use of an operating system/software interface.
Table 7. PCI Hot Plug LEDs
LED State Meaning
Off Power off: All main rails have been removed from slot. Card can be inserted or removed.
On Power on: Slot is powered on. Card cannot be inserted or removed.
Power
(Green)
Blinking Power transition: Slot is in the process of changing state. Card cannot be inserted or
removed.
Off Normal: Normal operation.
On Attention: Power fault or operational problem at this slot.
Attention
(Amber)
Blinking Locate: Slot is being identified at the user’s request.
3.1.5.2 Software Components
PCI hot plug operations are supported by the system BIOS, an operating system driver and an
optional operating system administrative interface. The Intel
®
Server Board Set SE8500HW4
BIOS provides initialization of the hot plug hardware components, logging of hot plug events
through server management and ACPI table generation. Microsoft* Windows* Server 2003,
Enterprise Edition includes support for PCI hot plug through the taskbar “Unplug or Eject
Hardware” interface but may require an updated adapter device driver. Refer to other operating
systems’ manuals for more information on how to perform hot-plug operations. Reference the
PCI adapter release notes for specific information on support and driver requirements.