Description 17
Modular RAID on Motherboard
The SE7501BR2 server board supports M-ROMB or Zero Channel RAID (ZCR) that allows the
on-board SCSI controller to be “hidden” from the system and used by the RAID processor on the
add-in card. This support is provided via hardware and BIOS support on PCI-X Slot 4. This PCI
segment may operate as PCI 64-bit/66 MHz with some ROMB RAID controllers.
Segment A: 32-bit/33 MHz PCI Subsystem
The 32-bit / 33 MHz PCI segment includes the following embedded devices and connectors:
• Two 5 V keyed full-length, full height PCI expansion slots (PCI Slots 5 and 6)
• Integrated Intel 10/100 Fast Ethernet Controller (Intel
82550PM)
• Integrated Intel Gigabit Ethernet Controller (Intel 82540EM)
• Integrated ATI Rage XL video controller with 8 MB of on-board SDRAM
32-bit/33 MHz PCI features include:
• Bus speed up to 33 MHz
• 5 V signaling environment
• Burst transfers up to a peak of 132 MB/s
• 8-, 16-, or 32-bit data transfers
• Plug-and-Play ready
• Parity enabled
Video Controller
The Intel
®
Server Board SE7501BR2 includes an ATI Rage XL video controller, 8 MB video
SDRAM, and support circuitry for an embedded SVGA video subsystem.
The SVGA subsystem supports a variety of modes: up to 1600 X 1200 resolution for CRT
displays, up to 1024 x 768 resolution for TFT displays, and up to 16.7 million colors with a refresh
rate of up to 100Hz. The SE7501BR2 server board provides a standard 15-pin VGA connector, and
external video blanking logic for server management console redirection support.
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