ID 3
id 2
The host adapter is assigned SCSI ID 7, which has the highest priority over all other devices.
The ID number which is traditionally assigned to the SCSI controller is ID 7. ID 7 is given the highest priority during bus arbitration.
You change the ID of one of them. You change the ID of one of them.
Assign each SCSI device a unique ID number
8 or 16 depending upon the SCSI hardware being used. In a narrow bus, you can use a SCSI ID of 0-7, and in a wide bus, you can use 0-15.
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When assigning IDs to SCSI peripherals, ID 0 should generally not be used for devices other than the SCSI host controller itself. This is because ID 0 is typically reserved for the SCSI initiator, which is responsible for sending commands to other devices on the bus. Using ID 0 for other peripherals can lead to conflicts and communication issues within the SCSI chain. It's best to allocate IDs 1 through 6 or 7 for other devices, depending on the SCSI standard in use.
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The SCSI logical unit number for boot devices is almost always zero(0).Matt Friend
ID3. Every other device can be set to any number as long as it's not in use. It is a recommended practice in IT comunity to set the scsi ID number for CD-ROM drive to 3.
In a plain SCSI (Small Computer System Interface) chain, up to 8 devices can be connected, including the SCSI host adapter. This means there are 7 additional devices that can be connected to the chain. SCSI IDs range from 0 to 7, with each device needing a unique ID for proper communication.