Compaq ProLiant 8500 ProLiant 8500 Server Technology - Page 13

Redundant Network Interface Controller Technology, Redundant Hot-Plug Fans

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TC000604TB TECHNOLOGY BRIEF (cont.) ... For more information about major OS vendors that support PCI Hot Plug, refer to the following Compaq technology briefs: • PCI Hot Plug Technology, document number ECG080/0698 • PCI Hot Plug Technology with Novell Architecture, document number ECG081/0698 • PCI Hot Plug Technology with SCO Software Architecture, document number ECG082/0698 • PCI Hot Plug Technology with Microsoft Windows Architecture, document number ECG071/0399 Redundant Network Interface Controller Technology Compaq's redundant Netelligent NIC technology allows two similar NICs to share a single instance of device driver code. One NIC becomes the active network controller and the other NIC acts as a standby controller. If the active NIC fails, the network traffic is automatically switched to the standby NIC. This redundancy eliminates the NIC or cable as a single point of failure. With PCI Hot Plug technology, the failed NIC can be replaced without rebooting the system. Thus, the end user can have continuous service and the administrator can greatly reduce planned and unplanned downtime. The ProLiant 8500 server supports a Compaq NC3131 Fast Ethernet controller on the PCI local bus. The NIC has two ports for 10BaseT or 100TX Ethernet. The ports are seen as two separate local area networks, both supporting full-duplex Ethernet (20 Mb/s) and Fast Ethernet (200 Mb/s). Redundancy is available across the two ports with one NIC. In addition, the NIC is upgradeable with a daughter card to an additional two ports of 100BaseTX Ethernet, a single port of 100 BaseFX, or single-port Gigabit Ethernet SX or LX Fiber support. Redundancy is also available here; the NIC can be configured to failover from the Gigabit daughter card to the dual 10/100 ports in the event of a failure, thus allowing continued access to the network. Redundant Hot-Plug Fans The ProLiant 8500 server includes two hot-plug system fans in the I/O module of the server (Figure 7). One fan is required to cool the system, and the other fan is redundant. If the primary fan fails, a system alert triggers the secondary (or redundant) fan to take over automatically. The redundant hot-plug system fan protects the various server components from overheating and helps prevent possible system interruption. Figure 7: Hot-plug fans in the ProLiant 8500 server. 13

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T
ECHNOLOGY
B
RIEF
(cont.)
13
TC000604TB
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For more information about major OS vendors that support PCI Hot Plug, refer to the following
Compaq technology briefs:
•
PCI Hot Plug Technology
, document number
ECG080/0698
•
PCI Hot Plug Technology with Novell Architecture
, document number
ECG081/0698
•
PCI Hot Plug Technology with SCO Software Architecture
, document number
ECG082/0698
•
PCI Hot Plug Technology with Microsoft Windows Architecture
, document number
ECG071/0399
Redundant Network Interface Controller Technology
Compaq’s redundant Netelligent NIC technology allows two similar NICs to share a single instance
of device driver code.
One NIC becomes the active network controller and the other NIC acts as a
standby controller.
If the active NIC fails, the network traffic is automatically switched to the
standby NIC.
This redundancy eliminates the NIC or cable as a single point of failure.
With PCI
Hot Plug technology, the failed NIC can be replaced without rebooting the system.
Thus, the end
user can have continuous service and the administrator can greatly reduce planned and unplanned
downtime.
The
ProLiant
8500 server supports a Compaq NC3131 Fast Ethernet controller on the PCI local
bus.
The NIC has two ports for 10BaseT or 100TX Ethernet.
The ports are seen as two separate
local area networks, both supporting full-duplex Ethernet (20 Mb/s) and Fast Ethernet (200 Mb/s).
Redundancy is available across the two ports with one NIC.
In addition, the NIC is upgradeable
with a daughter card to an additional two ports of 100BaseTX Ethernet, a single port of 100
BaseFX, or single-port Gigabit Ethernet SX or LX Fiber support.
Redundancy is also available
here; the NIC can be configured to failover from the Gigabit daughter card to the dual 10/100 ports
in the event of a failure, thus allowing continued access to the network.
Redundant Hot-Plug Fans
The
ProLiant
8500 server includes two hot-plug system fans in the I/O module of the server
(Figure 7).
One fan is required to cool the system, and the other fan is redundant.
If the primary
fan fails, a system alert triggers the secondary (or redundant) fan to take over automatically.
The
redundant hot-plug system fan protects the various server components from overheating and helps
prevent possible system interruption.
Figure 7:
Hot-plug fans in the
ProLiant
8500 server.