c. Parameters specifying sector format (bytes 12 to 19)

ξData byte length/physical sectors

This parameter specifies the data length per 1 physical sector as the number of bytes. In the IDD, the data byte length per 1 physical sector is the same as the data byte length in 1 logical data block. The INIT can specify the value of this parameter at 0 or 512 to 528 bytes (4-byte boundary).

If a value less than 512 bytes, the IDD sets a byte length of 512. If more than 528 bytes is specified, the IDD performs rounding processing and sets a byte length of 528. If an odd number of bytes is specified within the specified range, the IDD performs rounding up processing. If the above rounding processing is performed, the IDD reports the CHECK CONDITION status (RECOVERED ERROR [=1] / Rounded parameter [37-00] for that command.

If 0 is specified in this parameter, the value calculated based on the value of the "Data block length" in the block descriptor is used as this parameter value.

When both this page descriptor and the block descriptor are specified by the same MODE SELECT command, and a nonzero value is specified in this parameter which differs from the value in the "Data block length" parameter in the block descriptor, the value specified in the block descriptor has priority.

ξInterleave factor

This parameter field has meaning only with the MODE SENSE and MODE SENSE EXTENDED commands. The interleave factor (in the IDD, this is always X '0001' :non interleave) of the disk drive's current data format. The value specified in this field is disregarded in the MODE SELECT and MODE SELECT EXTENDED commands.

ξTrack skew factor

This parameter indicates the number of physical sectors existing between the data block with the highest order logical block address on a track and the data block with the next logical block address on the next track of the same cylinder (track skew). This parameter cannot be changed. The IDD disregards the value specified in this field and sets the optimum track skew value in the specified data block length. See Chapter 3, "Data Format" in the Product Manual for details about track skew. This parameter indicates the value of zone specified in active notch of Page C. If it is 0, this parameter indicates the value in zone 0.

ξCylinder skew factor

This parameter indicates the number of physical sectors existing between the data block with the highest order logical block address in a cylinder and the data block with the next logical block address in the next cylinder (cylinder skew). This parameter cannot be changed. The IDD disregards the value specified in this field and sets the optimum cylinder skew value in the specified data block length. See Chapter 3, "Data Format" in the Product Manual for details about cylinder skew. This parameter indicates the value of zone specified in active notch of Page C. If it is 0, this parameter indicates the value in zone 0.

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Fujitsu MAN3184, MAN3367, MAN3735 SERIES DISK DRIVES specifications

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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