13-3

RESET condition, or an unexpected disconnect occurs.

logical unit A physical or virtual peripheral device addressable through a target.

logical unit An encoded three-bit identifier for the logical unit. number

peripheral A physical peripheral device that can be attached to an SCSI

device device, which connects to the SCSI bus. The peripheral device and the SCSI device (peripheral controller) may be physically packaged together. Often there is a one-to-one mapping between peripheral devices and logical units, but this is not required. Examples of peripheral devices are: magnetic disks, printers, optical disks, and magnetic tapes.

queue tag The value associated with an I/O process that uniquely identifies it from other queued I/O processes in the logical unit for the same initiator.

reconnection A reconnection is the result of a reconnect and it exists from the assertion of the BSY signal in a SELECTION or RESELECTION phase until the next BUS FREE phase occurs.

SCSI address The hex representation of the unique address (0-15) assigned to an SCSI device. This address would normally be assigned and set in the SCSI device during system installation.

SCSI ID The bit-significant representation of the SCSI address referring to one of the signal lines dB(7-0).

SCSI device A host adapter or a target controller that can be attached to the SCSI bus.

target An SCSI device that performs an operation requested by an initiator.

INI-9100UW, INI-9100U specifications

The Initio INI-9100UW and INI-9100U are high-performance SCSI (Small Computer System Interface) controllers designed to provide exceptional data transfer rates and efficient connectivity for various storage solutions. These controllers are particularly favored in environments that demand reliable and fast data access, including servers and workstations.

One of the standout features of the INI-9100 series is its ability to support ultra-wide SCSI, allowing for data transfer rates of up to 40 MB/s. This speed is crucial for applications requiring rapid data movement, such as databases, streaming applications, and intensive computing tasks. The INI-9100UW variant extends this capability with its support for 68-pin connectors, which further enhances data throughput by allowing for a greater number of devices to be connected simultaneously.

Both the INI-9100UW and INI-9100U are built on a robust architecture, which includes integrated support for a wide range of SCSI devices. This includes hard disk drives, CD-ROMs, and tape drives, making these controllers versatile solutions for both modern and legacy systems. Their compatibility with various operating systems, including Windows and Linux, ensures seamless integration into existing setups.

Furthermore, the Initio controllers employ advanced technologies such as asynchronous transfers and cycle stealing, which minimize CPU load and allow the system to handle multiple tasks simultaneously without bottlenecks. This makes them particularly advantageous in multitasking environments.

Another key characteristic of the INI-9100 series is their dedicated onboard BIOS, which simplifies device management and setup processes. Users can easily configure the controllers for optimal performance using the user-friendly interface provided by the BIOS.

In summary, the Initio INI-9100UW and INI-9100U are powerful SCSI controllers that offer high-speed data transfer capabilities, robust architecture, and versatile compatibility with various SCSI devices. Their advanced technologies and user-friendly features make them ideal solutions for environments requiring reliable and efficient data access. As data storage needs continue to evolve, the INI-9100 series remains a valuable asset for both enterprise-level and individual users seeking to enhance their storage solutions.