HP ML530 ProLiant ML530 High-Performance Technologies - Page 11

balancing or failover functions. The Adaptec 7899 Dual Channel Ultra3 SCSI controller, controller - proliant g2 hard drive

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ProLiant ML530 High-Performance Technologies figure 10. architecture of the ProLiant ML530 G2 server I/O subsystem The north bridge uses the third 400-MHz IM Bus (4-bit width) to connect to the ServerWorks CSB 5.0 south bridge. The south bridge provides interfaces to the following buses: • LPC bus - This bus provides connection to a National NS417 Super I/O controller for diskette, keyboard, mouse, parallel, and serial port support. • X-Bus - The 2-MB redundant system ROM and bootblock are connected through this bus. • Compatibility bus - The 33-MHz, 32-bit PCI bus supports the system management controller, ATI Rage XL Video controller, Adaptec 7899 Dual Channel Ultra 160 SCSI controller, and Intel 82559 (10/100) NIC. All controllers are embedded in the system board. The embedded 10/100 NIC provides high-speed LAN capability while saving a PCI slot for other needs. The configuration utility enables customers to set up NICs for load balancing or failover functions. The Adaptec 7899 Dual Channel Ultra3 SCSI controller operating at 160 MB/s per channel provides twice the data rate of the Ultra2 controller used in the first generation ProLiant ML530 server. The SCSI controller has two ports, which are cabled to two 6-inch x 1-inch hot-plug drive cages in the front of the server to support up to 14 hard drives (Figure 11). A third 2-inch x 1-inch hot-plug SCSI drive cage is optional. It fits in the full-height removable media bay area and requires a dedicated SCSI channel. The SCSI backplanes on the hot-plug drive cages are built to work with Ultra 320 drives and controllers, allowing simple upgrades to faster drive technology when it becomes available. 11

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ProLiant ML530 High-Performance Technologies
11
figure 10. architecture of the ProLiant ML530 G2 server I/O subsystem
The north bridge uses the third 400-MHz IM Bus (4-bit width) to connect to the
ServerWorks CSB 5.0 south bridge. The south bridge provides interfaces to the following
buses:
•
LPC bus — This bus provides connection to a National NS417 Super I/O controller
for diskette, keyboard, mouse, parallel, and serial port support.
•
X-Bus — The 2-MB redundant system ROM and bootblock are connected through this
bus.
•
Compatibility bus — The 33-MHz, 32-bit PCI bus supports the system management
controller, ATI Rage XL Video controller, Adaptec 7899 Dual Channel Ultra 160
SCSI controller, and Intel 82559 (10/100) NIC. All controllers are embedded in the
system board.
The embedded 10/100 NIC provides high-speed LAN capability while saving a PCI slot
for other needs. The configuration utility enables customers to set up NICs for load
balancing or failover functions. The Adaptec 7899 Dual Channel Ultra3 SCSI controller
operating at 160 MB/s per channel provides twice the data rate of the Ultra2 controller
used in the first generation ProLiant ML530 server. The SCSI controller has two ports,
which are cabled to two 6-inch x 1-inch hot-plug drive cages in the front of the server to
support up to 14 hard drives (Figure 11). A third 2-inch x 1-inch hot-plug SCSI drive
cage is optional. It fits in the full-height removable media bay area and requires a
dedicated SCSI channel. The SCSI backplanes on the hot-plug drive cages are built to
work with Ultra 320 drives and controllers, allowing simple upgrades to faster drive
technology when it becomes available.