If zero is specified in the "SCSI Level" field, the IDD operates at the current SCSI level without changing the SCSI level. However, if the correct operation mode parameter (described later) is transferred at the same time, the IDD changes its operation mode.

The total byte length of the operation mode parameter transferred by the INIT with this command is specified in the "Parameter List Length" field in CDB byte 8.

If zero is specified in the "Parameter List Length" field, the command is terminated normally with only the SCSI level being changed.

When changing the operation mode, the "Parameter List Length" field must always be specified by the length (=8) defined by the operation parameter, described later. If a value other than the defined length in the "Parameter Byte Length" field is specified, this command is terminated with a CHECK CONDITION status (ILLEGAL REQUEST [=5] / Invalid field in CDB [=24-00]) and the SCSI level and operation mode are not changed.

If the IDD's operation mode is changed by this command, a UNIT ATTENTION condition (UNIT ATTENTION [=6] / INQUIRY Data has changed [=3F-00]) is generated for all the INITs except the INIT that issued this command.

The format for the operation mode parameter transferred by this command from the INIT to the IDD is shown below. If the operation mode parameter is transferred in a format other than that shown below, this command is terminated with a CHECK CONDITION status (ILLEGAL REQUEST [=5] / Invalid field in parameter list [=26-00]) and the SCSI level and operation mode are not changed.

Byte

Bit

7

6

5

4

3

2

1

 

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

X‘00’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

X‘00’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

X‘00’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

X‘04’ (Parameter Length)

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

0

0

0

WDTR

UNTAIN

SDTR

RSRTY

 

0

 

 

 

 

 

 

 

 

 

 

 

5

 

PHSCRC

AGD

ACE

0

0

0

RTD

 

 

 

 

 

 

 

 

 

6

 

 

 

 

X‘xx’ (Spindle Motor Start Delay Time)

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

X‘00’ (Reserved)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Header

Parameter List

The operation mode parameter is configured from a 4-byte parameter list following a 4-byte header.

C141-E124-01EN

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Fujitsu MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES specifications Wdtr, Sdtr Rsrty Phscrc AGD ACE RTD
Page 81 Page 83

MAN3735, MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES, MAN3367, MAN3184 specifications

Fujitsu's MAN3184, MAN3367, and MAN3735 series disk drives represent a significant advancement in storage technology, catering to the needs of businesses seeking reliability, performance, and high capacity. These drives are designed for enterprise environments, providing exceptional data integrity and speed essential for effective data management.

The MAN3184 series is renowned for its high rotational speed of 10,000 RPM, which significantly enhances data access times. With a capacity of up to 18.4 GB, these drives are suitable for applications requiring quick read and write operations. The series employs an improved read/write head technology, which reduces latency and increases overall performance. This technology is complemented by advanced error correction mechanisms, ensuring the reliability necessary for critical data applications.

Transitioning to the MAN3367 series, these drives offer increased storage capacity and improved performance metrics. With capacities reaching up to 36.7 GB, they cater to growing data demands in modern enterprises. They also feature a 10,000 RPM spindle speed, ensuring that the drives can handle intensive workloads with ease. The MAN3367 drives include SCSI interface support, making them versatile and easy to integrate into various systems. The inclusion of intelligent caching algorithms allows for faster data retrieval, while built-in thermal management features ensure optimal performance, even under heavy usage.

The MAN3735 series takes performance up another notch, boasting higher capacities of up to 73.5 GB. These drives are particularly suited for environments that require high reliability and availability. The series utilizes a state-of-the-art SCSI Ultra160 interface, which maximizes data transfer rates, ultimately enhancing overall system efficiency. Additionally, the MAN3735 series employs advanced data protection technologies, including power loss protection and predictive failure analysis, which proactively minimizes potential downtime.

All these series of Fujitsu disk drives are built with a focus on durability and sustained performance. They are designed to operate seamlessly in high-demand environments, ensuring that organizations can rely on them for critical applications. Their compact design and energy-efficient operation make them an ideal choice for modern data centers looking to optimize space and reduce power consumption.

In summary, Fujitsu's MAN3184, MAN3367, and MAN3735 series disk drives deliver a blend of high capacity, performance, and reliability. These drives incorporate advanced technologies that address the evolving needs of enterprise storage solutions, making them a valuable asset for any organization aiming to enhance their data management capabilities.
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