CBI/CGI Technical Reference

adapter to perform other operations on the SCSI bus while the SCSI device is tempo- rarily disconnected.

When the Enable Disconnection option is set to the default setting of Yes, the SCSI device may disconnect from the SCSI bus. The SCSI device may choose not to disconnect, however, even if permitted by the adapter (this can usually be configured on the SCSI device). When this option is set to No, the SCSI device cannot disconnect from the SCSI bus.

Leave the Enable Disconnection option set to Yes if the adapter connects to two or more SCSI devices. This optimizes SCSI bus performance. If the adapter connects to only one SCSI device, set this option to No to achieve slightly better performance.

Available options are:

Yes

No

Initiate Wide Negotiation

This option, which only displays for 16-bit adapters, lets the adapter initiate wide negoti- ation with a 16-bit SCSI device. The adapter will not attempt wide negotiation with 8-bit devices, so you can leave this option set to Yes even if the bus includes 8-bit devices.

Available options are:

Yes

No

Send Start Unit Command

This setting determines whether the adapter sends the Start Unit command (SCSI command 1B) to the SCSI device. The default setting for Send Start Unit Command is No (disabled).

Enabling this option reduces the load on a computer's power supply by allowing the adapter to turn on SCSI devices one by one when the computer boots; otherwise, all SCSI devices turn on at the same time. Before you enable this option for a device, make sure the AIC-7880 BIOS is enabled. Also, check the device documentation to make sure the device supports the command. On most devices, you must also change a switch or jumper setting on the device to enable the device to respond to the command.

If you enable Send Start Unit Command for more than one SCSI device, the adapter first sends the Start Unit command to the boot device specified in the Boot Target ID option of the Boot Device Configuration screen. When the boot device responds, Start Unit commands are sent to the remaining devices, beginning with the device with the lowest SCSI ID. The boot time varies depending on how long each drive takes to spin up.

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Chassis Plans

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Intel S5721-xxx manual Initiate Wide Negotiation, Send Start Unit Command
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S5721-xxx specifications

The Intel S5721-xxx is a high-performance processor designed for a variety of applications, particularly in data center environments and enterprise-level solutions. This processor is part of Intel's line of server-grade CPUs, which are engineered to deliver exceptional performance, efficiency, and scalability.

One of the standout features of the Intel S5721-xxx is its multi-core architecture, which allows for enhanced parallel processing capabilities. This is crucial for workloads that require simultaneous processing of multiple tasks, such as virtualization, cloud computing, and large-scale data analytics. With up to 20 physical cores and support for Intel Hyper-Threading technology, the S5721-xxx can handle up to 40 threads, significantly improving throughput and performance for demanding applications.

In terms of performance, the S5721-xxx offers impressive clock speeds that can reach up to 3.2 GHz, providing the necessary power for demanding tasks. Additionally, the processor supports Intel Turbo Boost Technology, which automatically increases the processor's frequency to provide extra performance when needed. This dynamic scaling ensures efficient resource utilization, making the processor an ideal choice for environments where workload requirements can fluctuate.

Another notable characteristic of the S5721-xxx is its advanced memory support. The processor is compatible with DDR4 memory, allowing for high bandwidth and low latency, which is essential for applications that require quick access to large datasets. Additionally, the S5721-xxx supports Intel Optane technology, which enhances memory performance and offers lower latency, providing a considerable advantage in data-intensive operations.

Intel's S5721-xxx also features enhanced security technologies. With Intel Software Guard Extensions (SGX), this processor provides hardware-based protection for applications and data, which is critical for enterprise applications dealing with sensitive information. Furthermore, it includes Intel Virtualization Technology, facilitating improved resource management and security in virtual environments.

Thermal management is also a focus for the S5721-xxx. It incorporates Intel's thermal velocity boost technology, which optimizes thermal performance and ensures that the processor can maintain high speeds without overheating under heavy loads.

In summary, the Intel S5721-xxx is characterized by its robust multi-core architecture, high clock speeds, advanced memory support, and security features. Its design caters specifically to the needs of modern data-driven enterprises and offers the scalability necessary to support emerging technologies and workloads. With its combination of performance, efficiency, and security, the Intel S5721-xxx is a formidable choice for organizations looking to enhance their computing capabilities.
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