3.1 Control/Sense Commands

This command specifies a different SCSI level in the "SCSI level" field in SCB byte 3. The SCSI level is indicated by 1 byte of code as shown in the following table. If a code other than the following codes is specified, the command is terminated by a CHECK CONDITION status (ILLEGAL REQUEST [=5] / Invalid field in CDB [=24-00] and the SCSI level and operation mode are not changed.

 

Operation Code (HEX)

SCSI Level

 

 

 

 

X'00'

Not Change

 

 

 

 

X'01'

SCSI-1 (Same as CCS)

 

 

 

 

X'02'

CCS (Same as SCSI-1)

 

 

 

 

X'03'

SCSI-2

 

 

 

*1

X'04'

SCSI-3

 

 

 

*1 Set at shipping time.

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.

C141-E167

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Fujitsu MAS3735, MAP3367, MAP3147, MAP3735, MAS3367 specifications SCSI-2, SCSI-3
Page 76 Page 78

MAP3735, MAP3147, MAS3367, MAP3367, MAS3735 specifications

Fujitsu, a renowned leader in technology and innovation, has developed a variety of reliable hard disk drives (HDDs) that cater to a wide range of data storage needs. Among these, the MAS3735, MAP3367, MAS3367, MAP3147, and MAP3735 series stand out for their advanced features and exceptional performance.

The MAS3735 is a high-capacity enterprise-class drive that boasts a storage capacity of up to 300 GB. Its 10,000 RPM spindle speed ensures rapid data retrieval and efficient performance, making it ideal for data-intensive applications. It utilizes a Serial Attach SCSI (SAS) interface, which allows for improved data transfer rates and increased reliability compared to traditional SATA drives. The drive is designed with advanced technologies such as error recovery and data integrity features, ensuring the safety and security of critical data.

Similarly, the MAP3367 and MAS3367 models are geared towards both enterprise and mid-range server environments, providing a storage capacity of up to 300 GB as well. These drives also operate at a spindle speed of 15,000 RPM, offering swift access times that enhance overall system performance. The MAP3367 employs the Ultra 320 SCSI interface, allowing for significant bandwidth and ensuring data is transmitted efficiently.

On the other hand, both MAP3147 and MAP3735 models provide versatile solutions for various applications, supporting capacities from 36 GB to 147 GB. The MAP3147, with its 10,000 RPM speed, is optimized for workloads requiring quick access and high throughput, making it suitable for transactional systems and enterprise applications. The MAP3735, while offering comparable capacity, emphasizes exceptional reliability and durability, which is crucial for environments that involve heavy data loads.

All these Fujitsu HDDs are characterized by their robust construction, reliability, and efficiency. They are built to withstand heavy workloads and are equipped with features like advanced thermal management and acoustic noise reduction, ensuring they operate effectively in data center environments.

In conclusion, Fujitsu's MAS3735, MAP3367, MAS3367, MAP3147, and MAP3735 series HDDs are designed for high performance and reliability, catering to both enterprise and mid-range environments. Their advanced features make them a strong choice for businesses looking to enhance their storage solutions while maintaining data integrity and system performance.
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