Defect descriptor Byte distance from index format

ξByte distance from the index format defect descriptor

Figure 3.14 shows this description format of the defect descriptor. Defect descriptor in this format specifies the cylinder number, head (track) number and byte distance to the top byte of those data (8 bytes), of the data which includes defective bits, on the disk media. One defect is treated as a defect with a length of 8 bytes (64 bits length). Therefore, for defects with a length which exceeds 8 bytes, 2 or more defect descriptors must be specified. When multiple defect descriptors are specified, the cylinder number must be specified in the top position, the byte distance from the index in the bottom position, and the defect positions listed in ascending order.

Note:

In order to specify an entire track as defective, X ‘FFFFFFFF’ must be specified as the byte distance from the index to the defect position.

Byte	Bit	7	6	5	4	3	2	1	0
		7	6	5	4	3	2	1	0


	0			Cylinder No. (MSB)

	1			Cylinder No.

	2			Cylinder No. (LSB)

	3			Head No.

	4		Byte distance from index to defect position (MSB)

	5		Byte distance from index to defect position

	6		Byte distance from index to defect position

	7		Byte distance from index to defect position					(LSB)

Figure 3.14 Defect descriptor: Byte distance from index format

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MAN3735, MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES, MAN3367, MAN3184 specifications

Fujitsu's MAN3184, MAN3367, and MAN3735 series disk drives represent a significant advancement in storage technology, catering to the needs of businesses seeking reliability, performance, and high capacity. These drives are designed for enterprise environments, providing exceptional data integrity and speed essential for effective data management.

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In summary, Fujitsu's MAN3184, MAN3367, and MAN3735 series disk drives deliver a blend of high capacity, performance, and reliability. These drives incorporate advanced technologies that address the evolving needs of enterprise storage solutions, making them a valuable asset for any organization aiming to enhance their data management capabilities.

Fujitsu MAN3184, MAN3367, MAN3735 Byte distance from the index format defect descriptor

Models: MAN3735 MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES MAN3367 MAN3184

ξByte distance from the index format defect descriptor

In order to specify an entire track as defective, X ‘FFFFFFFF’ must be specified as the byte distance from the index to the defect position.

Byte

Bit

Cylinder No. (MSB)

Cylinder No. (LSB)

Head No.

Byte distance from index to defect position (MSB)

Figure 3.14 Defect descriptor: Byte distance from index format

MAN3735, MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES, MAN3367, MAN3184 specifications