d)If an error is detected in initial self-diagnosis the LED blinks. In this case, it is recommended to issue the REQUEST SENSE command from the initiator (host system) to obtain information (sense data) for error analysis.

IMPORTANT

The LED lights during the IDD is executing a command. However, in same commands, the lighting time is only an instant. Therefore, it seems that the LED blinks or the LED remains off.

5.6.2Checking SCSI connection

When the initial operation is checked normally after power is turned on, check that the IDD is connected to the SCSI bus from the host system. Although checking the connection depends on the structure of the host system, this section describes the general procedures.

(1)Checking procedure

Issuing the commands and determining the end status depends on the start mode of the spindle motor and UNIT ATTENTION report mode (specified with setting terminal). Figure 5.4 shows the recommended checking procedure for the mode that the motor starts when power is turned on. Figure 5.5 shows for the mode that the motor starts by the START/STOP command. In these recommended checking procedures, following items are checked.

Note:

Following steps a) to d) correspond to a) to d) in Figures 5.4 and 5.5.

a)Issue the TEST UNIT READY command and check that the IDD is connected correctly to the SCSI bus and the initial operation after power is turned on ended normally. The command issue period of the TEST UNIT READY command shall be more than 20 ms.

b)To control starting of the spindle motor from the host system, issue the START/STOP UNIT command to start the spindle motor.

c)Check the SCSI bus operations with the WRITE BUFFER and READ BUFFER commands. Use data whose data bus bits change to 0 or 1 at least once. (Example: Data with an increment pattern of X'00' to X'FF')

d)Start the IDD self-diagnostic test with the SEND DIAGNOSTIC command and check the basic operations of the controller and disk drive.

5-14

C141-E205

Page 85 Page 87
Page 86
Image 86
Fujitsu MAU3036NC/NP, MAU3073NC/NP, MAU3147NC/NP manual Checking Scsi connection
Page 85 Page 87

MAU3036NC/NP, MAU3147NC/NP, MAU3073NC/NP specifications

The Fujitsu MAU3036NC/NP, MAU3147NC/NP, and MAU3073NC/NP are advanced models designed to offer high performance and reliability in various computing environments. These models are particularly notable for their optimized efficiency and robust feature set, making them suitable for a range of applications from enterprise servers to high-performance computing.

One of the standout features of the MAU series is its reliance on cutting-edge technology that maximizes data handling capabilities. The MAU3036NC/NP boasts a formidable capacity for high-speed data processing, making it ideal for tasks requiring quick data retrieval and storage. With an optimized caching mechanism, this model enhances data throughput and reduces latency, contributing to an overall faster response time in demanding applications.

The MAU3147NC/NP introduces further advancements with its enhanced thermal management system. This ensures that the unit operates at optimal temperatures, reducing the risk of overheating and prolonging the lifespan of the hardware. Additionally, this model implements advanced error-correcting code (ECC) memory, which significantly improves reliability by detecting and correcting internal data corruption, a crucial feature in mission-critical environments.

Meanwhile, the MAU3073NC/NP excels in terms of scalability. Its architecture allows for easy upgrades and expansions, accommodating growing data needs without significant downtime. This flexibility is essential for businesses looking to future-proof their operations and adapt to changing demands seamlessly.

All three models incorporate Fujitsu's innovative energy-efficient technologies, which not only reduce power consumption but also align with global sustainability goals. The intelligent power management systems make these units not only cost-effective but also environmentally friendly, demonstrating Fujitsu's commitment to responsible manufacturing.

Furthermore, robust connectivity options, including multiple interface support, make these models easily integrable into existing IT infrastructures. They are compatible with a variety of operating systems and software, ensuring that users can leverage their full potential regardless of their specific setup.

In summary, the Fujitsu MAU3036NC/NP, MAU3147NC/NP, and MAU3073NC/NP series exemplify the blend of performance, reliability, and efficiency. With features tailored to meet the evolving needs of modern businesses, these models stand out in the competitive landscape of computing solutions, ensuring that users can address both current and future challenges in data management and processing.
Top Page Image Contents