IntraServer Technology ITI-90-100250 Manuel D’Utilisation
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Connecting Internal SCSI
Devices
Devices
Internal SCSI devices (disks inside the host enclosure) can be connected to
the ITI-8241C-R rear I/O adapter using a multi-conductor 68 position ribbon
cable for 16-bit (WIDE) devices. There is one 68 position connector for each
of the two SCSI buses. SCSI bus A is wired to J7 and SCSI bus B is wired to
J8.
the ITI-8241C-R rear I/O adapter using a multi-conductor 68 position ribbon
cable for 16-bit (WIDE) devices. There is one 68 position connector for each
of the two SCSI buses. SCSI bus A is wired to J7 and SCSI bus B is wired to
J8.
Connectors that are labeled ULTRA2 LVD/SE are capable of running LVD
SCSI at 80MB/sec. To maximize the performance of the card, use all LVD
capable devices. Connecting a non-LVD device to the LVD bus will cause it
to run in SE mode and reduce the maximum performance of the port to
40MB/sec.
SCSI at 80MB/sec. To maximize the performance of the card, use all LVD
capable devices. Connecting a non-LVD device to the LVD bus will cause it
to run in SE mode and reduce the maximum performance of the port to
40MB/sec.
If the SCSI bus is not in LVD mode (LVD LED is off), the SCSI bus length
must be kept to the Ultra2 SE length of 1.5 meters.
must be kept to the Ultra2 SE length of 1.5 meters.
NOTE:
If the LVD LED is not illuminated, the LVD bus is not running in
LVD mode. This is a quick check to indicate if a non-Ultra2/LVD
device is on the LVD segment of the card.
LVD mode. This is a quick check to indicate if a non-Ultra2/LVD
device is on the LVD segment of the card.
Attaching Ultra2 LVD Devices
A differential internal cable (50-401030) can be used to attach internal LVD
disks to the ITI-8241C-R rear I/O module. The LVD cable should be
plugged into one of the LVD/SE connectors on the rear I/O adapter (J7 or J8).
All internal LVD devices should be connected to this cable.
disks to the ITI-8241C-R rear I/O module. The LVD cable should be
plugged into one of the LVD/SE connectors on the rear I/O adapter (J7 or J8).
All internal LVD devices should be connected to this cable.
To configure internal devices on the LVD/SE bus:
•
Set the device to a unique SCSI ID (0-6 or 8-15), the host adapter
default is 7.
default is 7.
•
Plug the unterminated end of the SCSI cable into the IntraServer
CompactPCI
CompactPCI
®
adapter, making sure pin 1 (usually marked on the
cable with a red stripe), corresponds to pin 1 on the connector.
•
Plug one connector on the ribbon cable to each of the devices on
the bus
the bus
•
Plug a 4-pin power connector into the power connector of each
SCSI device
SCSI device
•
The end of the LVD differential cable has a built in LVD
terminator, which will correctly terminate the end of the internal
terminator, which will correctly terminate the end of the internal