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Video
The SCB2 uses an ATI RAGE XL PCI graphics accelerator with 8 MB video SDRAM that
supports all standard IBM
•
Pixel resolutions up to 1600 x 1200 under 2D and 1024 x 768 under 3D
•
CRT and LCD monitors up to 100 Hz vertical refresh rate
The server board supports disabling of the onboard video through the BIOS setup menu or
when a plug in video card is installed in any of the PCI slots.
SCSI Controller
The SCSI version of the server board includes an embedded Adaptec
providing dual Ultra160 Low Voltage Differential (LVD) SCSI channels.
The SCSI bus is terminated on the server board with active terminators that cannot be
disabled. The onboard device must always be at one end of the bus. The device at the other
end of the cable must also be terminated. LVD devices generally do not have termination
built-in and need to have a termination source provided. Non-LVDs devices generally are
terminated through a jumper or resistor pack on the device itself.
ATA-100 Controller
The ATA version of the server board provides an embedded dual channel ATA-100 bus through
the use of the Promise Technology
two independent ATA-100 channels that share a single 32 Bit, 33-MHz PCI bus master interface
as a multifunction device. The controller supports:
•
DMA and PIO IDE drives and ATAPI devices
•
ATA and ATAPI proposal PIO Mode 0, 1, 2, 3, 4; DMA Mode 0, 1, 2; and
Ultra DMA Mode 0, 1, 2, 3, 4, 5
•
IDE transfer rates up to 100 MB/sec per channel
•
Buffering for PCI/IDE burst transfers
•
Master/slave IDE mode
•
Host interface complies with PCI Local Bus Specification Revision 2.2
IDE RAID
The ATA-100 controller supports IDE RAID through both ATA-100 channels. In a RAID con-
figuration, multiple IDE hard drives are placed into one or more arrays of disks. Each array is
seen as an independent disk, though the array may include one, two, three, or four drives.
The IDE RAID can be configured as follows:
•
RAID 0: Striping one to four drives
•
RAID 1: Mirroring two drives
•
RAID 1 +: Spare drive (three drives)
•
RAID 0 +: One to four drives are required
RAID 0 configurations are used for high performance applications, as it doubles the sus-
tained transfer rate of its drives. RAID 1 configurations are primarily used for data protec-
tion. It creates an identical drive backup to a secondary drive. Whenever a disk write is
performed, the controller sends data simultaneously to a second drive located on a different
data channel. With 4 drives attached to dual ATA-100 channels, two striped drive pairs can
mirror each other (RAID 0+1) for storage capacity and data redundancy.
MAXDATA PLATINUM Server Board User's Manual
®
VGA modes. The embedded SVGA video subsystem supports:
®
PDC20267 ATA-100 controller. The controller contains
®
AIC-7899W controller
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