b.Fault LED: Output signal (CN1-A2 pin)

The HDD indicates that the write-protect status is in effect (CN1-A12 is connected to the GND, or the CN2-9 and CN2-10 are short-circuited.) A signal for driving the LED is output.

(HDD)

74LS06 or equivalent

150

CN1-A2

IMPORTANT

This signal is temporarily driven at the GND level when the micro program reads the SCSI ID immediately after the power supply to the HDD has been switched on (it is possible to set up the SCSI ID by short circuiting CN1-A1 and CN1-A2.)

c.CN1-A6 (reserved)

This pin is temporarily driven at the GND level when the micro program reads the SCSI ID immediately after the power supply to the HDD has been switched on (it is possible to set up the SCSI ID by short circuiting CN1-A3 and CN1-A4, and CN1-A5 and CN1-A6.)

This pin gets high impedance status except above.

d.–LED and LED (+5V): Output signals (CN1-A8 pin and CN2-21, 22 pin)

These signals drive the external LED as same as LED on the front of the disk drive. The electrical requirements are given in Figure 4.21.

IMPORTANT

1.The external LED is identical in indication to the LED on the front of the HDD. The LED blinks during command execution.

2.Any load other than the external LED (see Subsection 4.3.5) should not be connected to the CN2-21, 22 pin (LED [V] and –LED terminals).

3.This signal is temporarily driven at the GND level when the micro program reads the SCSI ID immediately after the power supply to the HDD has been switched on (it is possible to set up the SCSI ID by short circuiting CN1-A7 and CN1-A8.)

C141-E226

4-17

Page 67
Image 67
Fujitsu MAW3073NC/NP, MAW3300NC/NP, MAW3147NC/NP manual 74LS06 or equivalent 150 Ω CN1-A2

MAW3147NC/NP, MAW3073NC/NP, MAW3300NC/NP specifications

Fujitsu has established itself as a key player in the world of hard disk drives, and their MAW3073NC/NP, MAW3300NC/NP, and MAW3147NC/NP models showcase exemplary engineering and innovative technology. These drives are designed primarily for enterprise applications, providing robust performance, reliability, and data integrity in demanding environments.

One of the standout features of the Fujitsu MAW series is its high storage capacity. The MAW3073NC/NP model comes with a generous 73 GB capacity, while the MAW3300NC/NP boasts 300 GB, and the MAW3147NC/NP offers 147 GB of storage. This range makes them suitable for various applications, from databases to data-intensive software.

The drives utilize the latest Serial Attached SCSI (SAS) interface, which ensures high speed and efficiency in data transfer. SAS technology provides better bandwidth and performance compared to older parallel SCSI interfaces, enabling faster access to data and improved overall system responsiveness. With rotational speeds of 10,000 RPM, these drives further enhance performance, enabling faster read and write times, which is critical for enterprise applications that require quick data retrieval.

Another noteworthy characteristic of the Fujitsu MAW series is their advanced error recovery and data integrity features. The drives are equipped with sophisticated error correction mechanisms and management systems that help maintain data integrity, ensuring that the data remains intact even in the event of power loss or system failure. This reliability is paramount for enterprise environments where data loss can result in significant operational disruptions.

In terms of physical design, these drives are built to endure the rigors of high-demand environments. They feature a robust construction that allows for efficient heat dissipation, minimizing the risks associated with overheating. Additionally, their form factor is designed for easy integration into various server and storage systems, making them versatile solutions for IT infrastructure.

Fujitsu's commitment to sustainability is also evident in the MAW series with their energy-efficient operation and reduced power consumption, contributing to decreased overall operational costs. With a combination of high performance, reliability, and sustainability, the Fujitsu MAW3073NC/NP, MAW3300NC/NP, and MAW3147NC/NP hard drives stand out as formidable choices for organizations looking to optimize their data storage solutions. They embody the cutting-edge technology and quality that Fujitsu is known for in the enterprise storage market.