Manuals / Fujitsu / Computer Equipment / Computer Drive

Fujitsu MAP3147, MAP3367, MAS3735 FOV format option valid, Dpry disable primary Default value

Models: MAP3735 MAP3147 MAS3367 MAP3367 MAS3735

1 290
Download 290 pages 28.72 Kb
Page 141
Image 141

3.3 Format Commands

a.Header

The top of the format parameter transferred from the INIT is a 4-byte header. The INIT can specify the method used for defect processing that is executed by this command by control flags within the header.

•FOV (format option valid)

0:Indicates that the INIT does not specially specify concerning the functions specified by the control flags in bits 6 to 4 of byte 1 (see following “DPRY” to “STPF”.). The IDD executes format processing in accordance with the default values of the various control flags. If the INIT specifies “0” in this bit, “0” must be specified in all the control flags in bits 6 to 4 of byte 1.

1:Indicates that the INIT is clearly specifying the functions specified by the control flags in bits 6 to 4 of byte 1 (see following “DPRY” to “STPF”.). The IDD executes format processing according to the values specified in the various control flags.

•DPRY (disable primary): Default value: “0”

0:Specifies execution of format processing using the P List. Alternate blocks are allocated as substitutes for sectors in which defects registered in the P List exist, and logical data blocks are not positioned there.

1:Specifies use of the P List in defect processing. Even if this value is specified, the P List itself is saved without being erased.

Note:

When the disk media is being initialized for normal operation, the P List must by all means be used. Therefore, “0” should be specified in this bit.

•DCRT (disable certification): Default value: “0”

0:Specifies that data block verification be performed after initialization of the disk media. The IDD confirms that all logical data blocks can be read from normally after initialization is completed. Any defective data blocks detected in this verify operation are registered as a C List and alternate blocks are allocated for those data blocks.

1:Indicates that data block verify operations are prohibited after initialization of the disk media.

•STPF (stop format): Default value: “1”

When the defect list (P List or G List) necessary for executing the defect processing specified in this command, cannot be read from the disk media, this bit indicates whether to continue (“0” is specified) or terminate (“1” is specified) command processing, but in the IDD, this bit’s specification is disabled, and the specified value is disregarded. When the necessary defect list cannot be read, this command is terminated with a CHECK CONDITION status. The sense data at this time indicate “MEDIUM ERROR [=3] / Primary defect list not found [=1C-01]” or “MEDIUM ERROR [=3] / Defect list error in primary list [=19-02],” if the P List cannot be read and “MEDIUM ERROR [=3] / Grown defect list not found [=1C-02]” or “MEDIUM ERROR [=3] / Defect list error in grown list [=19-03],” if the G List cannot be read.

C141-E167

3 - 79

Page 140 Page 142
Page 141
Image 141
Fujitsu MAP3147 FOV format option valid, Dpry disable primary Default value, Dcrt disable certification Default value
Page 140 Page 142

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.