Fujitsu MAP3367NC, MAP3147NC/NP, MAP3735NP, MAP3735NC/NP manual Track skew/head skew, Sector format

Models: MAP3735NP MAP3367NC MAP3735NC/NP MAP3367NC/NP MAP3147NC/NP MAP3367NP

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Cylinder skew

Head

Cylinder skew

Trackskew

Head

Leadinglogical sectorinhead p+1

Figure 3.5 Track skew/head skew

The number of physical sectors (track skew factor and head skew factor) corresponding to the skew time varies depending on the logical data block length because the track skew and the head skew are managed for individual sectors. The IDD automatically determines appropriate values for the track skew factor and the head skew factor according to the specified logical data block length. The value can be read out by the MODE SENSE or MODE SENSE EXTENDED command after the track has been formatted.

3.1.4Sector format

Each sector on the track consists of an ID field, a data field, and a gap field which separates them. Figure 3.6 gives sector format examples.

SCT

 

 

 

 

 

 

 

 

SCT

PLO

SM1

DATA1

SM2

DATA2

BCRC

ECC

PAD

 

 

 

G1 Sync

 

G2

 

 

 

SCT

 

 

PLO

SM1 DATA1

SM2 DATA3

G1 Sync

 

 

Servo

 

 

 

 

 

 

 

SCT

PAD

 

G2

 

PLO

SM1

DATA1

SM2

DATA4

BCRC

ECC

PAD G3

 

 

G1 Sync

 

Figure 3.6 Sector format

Each sector on the track consists of the following fields:

C141-E166

3-7

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Fujitsu MAP3147NC/NP, MAP3735NP, MAP3735NC/NP, MAP3367NC/NP, MAP3367NP manual Track skew/head skew, Sector format

MAP3735NP, MAP3367NC, MAP3735NC/NP, MAP3367NC/NP, MAP3147NC/NP specifications

Fujitsu's MAP3147NC/NP, MAP3367NC/NP, and MAP3735NC/NP hard disk drives represent a robust solution for businesses seeking reliable data storage options. These models are part of Fujitsu’s extensive line of high-performance hard drives that cater to various organizational needs, from servers to high-capacity data storage systems.

One of the standout features of these hard drives is their speed. The MAP3147NC/NP operates at a spindle speed of 10,000 RPM, ensuring rapid data access and retrieval. This speed is essential for environments requiring quick data transactions, making it suitable for enterprise-level databases and high-performance computing applications.

The capacity range across these models is designed to meet varying storage requirements. The MAP3147NC offers 147 GB, while the MAP3367NC provides 67 GB, and the MAP3735NC boasts a generous capacity of 35 GB. This diversity allows organizations to select the drive that best fits their data storage and performance needs while maintaining a scalable storage solution.

In terms of technology, the drives incorporate advanced features such as Serial Attached SCSI (SAS) interface, which enhances data throughput and reliability compared to traditional Parallel SCSI interfaces. SAS technology enables these drives to support multiple device connections while ensuring high-performance throughput, essential for modern enterprise environments.

The drives employ a 64 MB cache, providing a significant performance boost by allowing for quicker access to frequently used data. This capability improves overall system responsiveness, especially in applications requiring high input/output operations per second (IOPS).

Moreover, the MAP3147NC/NP, MAP3367NC/NP, and MAP3735NC/NP series are designed with data integrity in mind. They include features such as Error Correction Code (ECC) and background error scanning, which work together to maintain the integrity of stored data and minimize the risk of data loss.

In conclusion, Fujitsu’s MAP3147NC/NP, MAP3367NC/NP, and MAP3735NC/NP hard disk drives provide a blend of performance, capacity, and reliability. With their fast spindle speeds, robust data throughput via SAS technology, and enhanced cache memory, these drives are ideal for enterprises requiring durable and efficient data storage solutions in high-demand environments. As organization needs evolve, these drives offer scalability and reliability to support diverse applications and workloads.