3.1 Data Space

 

 

Table 3.1

Zone layout and track capacity

 

 

 

 

 

 

 

 

Zone

Cylinder

Byte/track

Sector/track

 

 

 

 

 

MAP3147FC

 

MAP3735FC

 

 

 

 

 

 

 

 

 

 

 

 

0

0 - 1,120

479,232

936

 

 

 

 

 

 

 

1

1,121

- 4,117

465,920

910

 

 

 

 

 

 

 

2

4,118

- 6,078

459,264

897

 

 

 

 

 

 

 

3

6,079

- 9,075

452,608

884

 

 

 

 

 

 

4

9,076 - 12,884

439,296

858

 

 

 

 

 

 

 

5

12,885

- 16,077

425,984

832

 

 

 

 

 

 

 

6

16,078

- 19,270

412,672

806

 

 

 

 

 

 

 

7

19,271

- 21,637

402,432

786

 

 

 

 

 

 

 

8

21,638

- 24,354

399,360

780

 

 

 

 

 

 

 

9

24,355

- 27,561

379,392

741

 

 

 

 

 

 

 

10

27,562

- 29,256

372,736

728

 

 

 

 

 

 

 

11

29,257

- 32,351

359,424

702

 

 

 

 

 

 

 

12

32,352

- 34,942

346,112

676

 

 

 

 

 

 

 

13

34,943

- 37,855

330,240

645

 

 

 

 

 

 

 

14

37,856

- 41,062

319,488

624

 

 

 

 

 

 

 

15

41,063

- 43,961

299,520

585

 

 

 

 

 

 

 

16

43,962

- 46,342

284,672

556

 

 

 

 

 

 

 

 

17

46,343 - 47,925

 

46,343 - 47,995

272,896

533

 

 

 

 

 

 

 

 

Note: When the logical data block length is 512 bytes, the sector/track capacity indicates above amount

(1)User space

The user space is a storage area for user data. The data format on the user space (the length of data block and the number of data blocks) can be specified with the MODE SELECT or MODE SELECT EXTENDED command.

The default value of cylinders in the user space is MAP3147 FC = 47,926, MAP3735 FC = 47,996. These also equal the maximum cylinders number for each series. The user can also specify the number of logical data blocks to be placed in the user space with the MODE SELECT or MODE SELECT EXTENDED command. When the number of logical data blocks is specified, as many cylinders as required to place the specified data blocks are allocated in the user space.

C141-E163

3-3

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Image 39
Fujitsu MAP3735FC, MAP3147FC manual Data Space, Zone layout and track capacity

MAP3735FC, MAP3147FC specifications

Fujitsu has been a prominent player in the hard disk drive market, with its MAP3147FC and MAP3735FC models standing out in terms of performance and reliability. These drives are engineered to meet the growing demands of enterprise applications, providing robust solutions for data storage in critical environments.

The Fujitsu MAP3147FC, with a capacity of 147 GB, is optimized for high-speed data access and storage efficiency. This 3.5-inch SCSI drive operates at a rotational speed of 15,000 RPM, ensuring rapid data retrieval and minimized latency, making it ideal for applications requiring quick transaction processing. It features a 4 Gbps Fibre Channel interface, which enhances connectivity and system integration, promoting seamless communication between devices in storage area networks.

On the other hand, the MAP3735FC model offers a higher capacity of 300 GB. It shares similar specifications with its counterpart, including the 15,000 RPM speed, which guarantees top-notch performance for mission-critical applications. The MAP3735FC, like the MAP3147FC, incorporates advanced technologies such as Command Queuing, which optimizes the execution of multiple read and write commands in a queue. This feature is particularly beneficial in environments with high I/O demands, improving overall system throughput and efficiency.

Both drives utilize sophisticated error correction techniques, ensuring data integrity and reliability. They are equipped with features like S.M.A.R.T. (Self-Monitoring, Analysis, and Reporting Technology), which continuously monitors the health of the drives and helps predict potential failures, allowing for proactive maintenance and data protection.

In terms of physical characteristics, both models are designed to withstand the rigors of continuous operation. They are built with a rugged casing to protect against vibration and shock, making them suitable for use in enterprise-level servers and storage systems. Their design also allows for efficient heat dissipation, which is critical for maintaining optimal performance during extended use.

In summary, Fujitsu's MAP3147FC and MAP3735FC hard drives embody a combination of high speed, reliability, and advanced features tailored for enterprise environments. Their robust performance, large storage capacities, and reliable error correction technologies make them an excellent choice for businesses looking to optimize their data storage solutions and ensure seamless operation in demanding applications. With Fujitsu's commitment to quality and innovation, these models continue to meet the evolving needs of the data storage industry.