3.1.7MODE SENSE (1A)

Byte

Bit

7

 

6

5

4

 

3

2

1

0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

 

 

X‘1A’

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

LUN

 

0

 

DBD

0

0

0

 

 

 

 

 

 

 

 

 

 

 

2

 

 

PC

 

 

 

Page Code

 

 

 

 

 

 

 

 

 

 

 

 

3

 

0

0

0

0

0

0

0

0

 

 

 

 

 

 

 

 

 

 

4

 

 

 

 

 

Transfer Byte Length

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

0

 

0

0

0

0

0

Flag

Link

 

 

 

 

 

 

 

 

 

 

 

 

This command reports the values for each type of parameter related to the disk drive's physical attributes, data format, timing for SCSI bus disconnect and reconnect processing, error recovery procedures, etc., as well as the attributes of those parameters, to the INIT.

The data (MODE SENSE data) transferred to the INIT from the IDD by this command are configured from a "Header," "Block Descriptor" and one or more "Page descriptors" which describe each type of parameter, each of which will be described later in this item.

When "1" is specified in the "DBD (disable block descriptors)" bit of CDB byte 1, it indicates that a "Block descriptor" is not included in the MODE SENSE data transferred to the INIT by this command and the IDD transfers MODE SENSE data composed from the "Header" and the specified "Page descriptor" only to INIT. When "0" is specified in this bit, the IDD transfers MODE SENSE DATA composed of the "Header, " a single "Block descriptor" and the specified "Page descriptor" to the INIT.

The "Page code" field in CDB byte 2 specifies the page code of the "Page descriptor" transferred to the INIT by this command. The types of "Page descriptor" supported by the IDD and their page codes and lengths are as shown below.

Page Code

Page Descriptor Name

CCS

SCSI-2

SCSI-3

 

 

 

 

 

1

Read/Write Error Recovery Parameter

8 bytes

12 bytes

12 bytes

2

Disconnect/Reconnect Parameter

12 bytes

16 bytes

16 bytes

3

Format Parameter

24 bytes

24 bytes

24 bytes

4

Drive Parameter

20 bytes

24 bytes

24 bytes

7

Verify Error Recovery Parameter

12 bytes

12 bytes

12 bytes

8

Read Caching Parameter

20 bytes

20 bytes

20 bytes

A

Control Mode Parameter

12 bytes

12 bytes

12 bytes

C

Notch Parameter

24 bytes

24 bytes

24 bytes

1C

Information of exceptions control parameter

12 bytes

12 bytes

12 bytes

21

Additional Error Recovery Parameter

4 bytes

4 bytes

4 bytes

3F

All Page Descriptors Supported by the IDD

68 bytes

160 bytes

160 bytes

 

 

 

 

 

3 - 32

C141-E124-01EN

Page 97
Image 97
Fujitsu MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES specifications Mode Sense 1A, Lun Dbd

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.