Adaptec Raidport - NEC POWERMATE PROFESSIONAL 9000 Service Manual

When using 16-bit SCSI devices on channel B:
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Use the onboard 68-pin Wide connector for cabling to 16-bit devices.
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Enable termination only on the last device on the SCSI cable (internal and/or
external).
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Remove or disable termination on all other devices.
When using 8-bit SCSI devices on channel B:
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Use the onboard 50-pin connector for cabling to 8-bit devices.
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If the cable does not end at the system board, but continues to external devices,
disable onboard SCSI termination through the SCSISelect utility and the Channel
B termination option in the BIOS Setup utility.
When mixing 8-bit and 16-bit SCSI devices on channel B:
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Use the onboard 50-pin connector for 8-bit devices and the 68-pin connector for
16-bit devices.
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If the internal 68-pin cable ends at the system board, then more than one 8-bit
device may be connected to the 50-pin cable; however, if the 68-pin cable
continues to the external terminator card, then only one 8-bit device can be
connected to the 50-pin cable. Terminate devices at the end of the cable.

Adaptec RAIDport

The onboard RAIDport connector, in conjunction with an ARO-1130CA-B Adaptec
RAIDport card and the SCSI controller, provides a complete client RAID solution. The
RAIDport card supports the following features for enhancing performance, data
redundancy, and data availability:
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RAID coprocessor
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Support for RAID levels 0 (data striping), 1 (mirroring), and 0/1
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Hot-swap drive support
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Hot-spare standby
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Dynamic sector repairing.
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