M To Connect The Scsi Cables; Figure 3-21 Scsi In And Out Ports On The Back Of The Array (Ac Version) - Sun Microsystems StorEdge S1 Array Installation And Maintenance Manual

To Connect the SCSI Cables
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1. Verify that the host system has been powered off (if needed).
Refer to "To Prepare the Host System" on page 59.
2. Connect the SCSI cable to the host system.
You can connect a cable to a host bus adapter or an on-board connector.
3. Connect the other end of the SCSI cable to the SCSI IN port at the back of the
array.
FIGURE 3-21
4. Determine if this array is at the beginning or the end of the SCSI chain.
If this array is at the end of the SCSI chain (you are not connecting any other
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peripherals to the host), go to "Connecting and Disconnecting Power Cables" on
page 62.
If this array is at the beginning of the SCSI chain (if you are going to daisy chain
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other arrays or peripherals off of this one), go to Step 5.
5. Connect one end of the SCSI cable to the SCSI OUT port of the first array.
6. Connect the other end of the SCSI cable to the SCSI IN port on the second array
array or peripheral.
7. Repeat Step 5 and Step 6 until all arrays are attached to the daisy chain.
8. Determine if you need to install an external terminator at the end of the daisy
chain.
If the last device in the daisy chain is an array or some other type of UltraSCSI
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device, do not install an external terminator on the device. The on-board
autoterminator in the device functions in UltraSCSI mode.
If the last device in the SCSI daisy chain is a wide SCSI device, install an external
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terminator on the SCSI OUT port on that device if it requires one.
Refer to the documentation that came with the wide SCSI device to determine if
the device needs an external terminator.
Note – Wide SCSI Devices use a 16- or 32-bit bus and transmit twice as much data
as a narrow SCSI device.
60 Sun StorEdge S1 Array Installation and Maintenance Manual • April 2003
SCSI IN and OUT Ports on the Back of the Array (AC Version)
SCSI IN port
SCSI OUT port