Command Specifications

 

Table 3.1

MODE SENSE Data Type Specifications

 

 

 

PC

 

Type of Parameter Transferred to the INIT

 

 

 

00

Current Values:

 

 

Reports each "Current" parameter value. The "Current" values are either of the following values.

 

• Values specified by a MODE SELECT or MODE SELECT EXTENDED command which is finally

 

normally terminated.

 

 

• When a MODE SELECT or MODE SELECT EXTENDED command is not executed after the power is

 

switched on, after a RESET condition or after a BUS DEVICE RESET message issued by any INIT is

 

received, the same values as "Save" values. However, if "Save" values do not exist for parameters

 

other than those on Page 3 and Page 4 (excluding byte 17), the same values as "Default" values.

 

 

 

01

Variable Values:

 

 

The INIT reports variable parameter fields and parameter bits through the MODE SELECT or MODE

 

SELECT EXTENDED command. A "1" is reported in the variable fields and bit positions in each page

 

descriptor and "0" is reported in the fields and bit positions which cannot be changed. See the description

 

of each page descriptor for the MODE SELECT command (Section 3.1.5) concerning the variability of

 

each parameter.

 

 

 

 

10

Default Values:

 

 

Reports the "Default" value of each parameter. See the description of each page descriptor for the MODE

 

SELECT command (Section 3.1.5) concerning the actual default value of each parameter.

 

 

 

11

Save Values:

 

Reports the "Save" value of each parameter. The "Save" values are either of the following values.

•For parameters other than those on Page 3 and Page 4 (excluding byte 17), these are the values specified in a MODE SELECT or MODE SELECT EXTENDED command in which the "SP" bit after the final execution is completed is "1." When a MODE SELECT or MODE SELECT EXTENDED command in which the "SP" bit is "1" is not executed (when "Save" values do not exist), these are the same values as the "Default" values.

•The values in the parameters in Page 3 and Page 4 (excluding byte 17) are the values save to the disk media during execution of the FORMAT UNIT command.

The "Transfer Byte Length" field in the CDB specifies the total number of bytes of MODE SENSE data which can be transferred to the INIT by this command. The IDD transfers the number of bytes of all the MODE SENSE data specified in the "Page code" field or the portion of MODE SENSE data with the length specified in the "Transfer Byte Length" field, whichever is smaller. When zero is specified in the "Transfer Byte Length" field, this command is terminated without anything being transferred.

Figure 3.10 shows the data configuration in the parameter list (MODE SENSE data) transferred to the INIT by this command. The parameter list consists of a 4-byte header, an 8-byte block descriptor and one or more page descriptors, specified in the CDB, which are transferred in order. However, when "1" is specified in the DBD bit of the CDB, the block descriptor is not transferred. Also, when X '00' is specified in the "Page code" field of the CDB, the page descriptor is not transferred.

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Fujitsu MAS3735, MAP3367, MAP3147, MAP3735, MAS3367 specifications Mode Sense Data Type Specifications
Page 91 Page 93

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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