Other OpenBoot Commands

Beyond the formal firmware-based diagnostic tools, there are a few commands you can invoke from the ok prompt. These OpenBoot commands display information that can help you assess the condition of a Sun Fire V490 server. These include the following commands:

■.env command

■printenv command

■probe-scsiand probe-scsi-all commands

■probe-ide command

■show-devs command

This section describes the information these commands give you. For instructions on using these commands, turn to “How to Use OpenBoot Information Commands” on page 198, or look up the appropriate man page.

.env Command

The .env command displays the current environmental status, including fan speeds; and voltages, currents, and temperatures measured at various system locations. For more information, see “About OpenBoot Environmental Monitoring” on page 52, and “How to Obtain OpenBoot Environmental Status Information” on page 155.

printenv Command

The printenv command displays the OpenBoot configuration variables. The display includes the current values for these variables as well as the default values. For details, see “How to View and Set OpenBoot Configuration Variables” on page 180.

For more information about printenv, see the printenv man page. For a list of some important OpenBoot configuration variables, see TABLE 6-2.

probe-scsi and probe-scsi-all Commands

The probe-scsiand probe-scsi-allcommands check the presence of SCSI or FC-AL devices and verify that the bus itself is operating properly.

Caution – If you used the halt command or the Stop-A key sequence to reach the ok prompt, then issuing the probe-scsior probe-scsi-allcommand can hang the system.

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V490 specifications

Sun Microsystems V490 is a robust, high-performance server that was launched in the mid-2000s. It is part of Sun's Enterprise line of servers, specifically designed to meet the needs of businesses requiring reliability, scalability, and efficiency in their computing environments. The V490 is well-regarded for its versatility and ability to handle demanding applications.

At the heart of the V490 is its support for the UltraSPARC IV processor. The server can be configured to contain up to four processors, allowing it to deliver exceptional parallel processing capabilities. The UltraSPARC IV architecture enhances throughput and efficiency, making it suitable for enterprise applications and database management tasks.

One of the standout features of the V490 is its memory capacity. The server can support up to 64 GB of RAM, which allows for extensive caching and improved performance for memory-intensive applications. Coupled with a high bandwidth architecture, the V490 ensures that data can be processed quickly and effectively.

The V490 also emphasizes storage flexibility. It comes equipped with multiple disk drive bays, allowing for a combination of SATA and SAS drives. This flexibility enables businesses to tailor their storage solutions according to their specific performance and redundancy requirements. The V490 supports hot-swappable drives, making maintenance and upgrades considerably easier without taking the server offline.

In terms of connectivity, the Sun V490 features a variety of networking options. It includes multiple Gigabit Ethernet ports, ensuring high-speed data transfer and redundancy. Additionally, the server supports advanced input/output capabilities, making it compatible with various peripherals and external storage solutions.

Sun Microsystems V490 runs on the Solaris operating system, known for its stability and security. This OS enhances the server's performance while providing a reliable platform for mission-critical applications. The V490 also supports virtualization technologies, allowing organizations to run multiple operating systems and applications on a single hardware platform, thus optimizing resource utilization.

Another key characteristic of the V490 is its thermal efficiency. The server is designed with an advanced cooling system that minimizes energy consumption while maximizing performance. This focus on power efficiency aligns with modern data center requirements for sustainability and reduced operational costs.

In summary, the Sun Microsystems V490 is a powerful enterprise server that combines the latest processing technologies, substantial memory and storage capabilities, and robust networking options. Its scalability, along with advanced virtualization support and energy-efficient design, makes it a suitable choice for organizations looking to enhance their IT infrastructure. The V490 remains a testament to Sun Microsystems' commitment to delivering high-quality, reliable computing solutions.
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