ISO 7297:1985 PDF

Information processing — Magnetic disk for data storage devices — 96 000 flux transitions per track, 200 mm (7.9 in) outer diameter, 63,5 mm (2.5 in) inner diameter

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Title (English):

ISO 7297:1985

Information processing — Magnetic disk for data storage devices — 96 000 flux transitions per track, 200 mm (7.9 in) outer diameter, 63,5 mm (2.5 in) inner diameter

Document status:: Active
Format:: Electronic (PDF)
Number of pages:: 15
Publication date:: March 14, 1985
Edition:: ISO IS 7297 edition 1 version 1
ICS:: 35.220.21

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Description (English):

Lays down mechanical, physical and magnetic characteristics of a lubricated magnetic disk, having a 200 mm (7.9 in) outer diameter and 63.5 mm (2,5 in) inner diameter, intended for mounting in data storage devices. Defines the requirements for a disk to give satisfactory performance at 95 840 flux transitions per track. When used at other densities, equivalent performance may require modifications of the characteristics. Reference: ISO 1202

Technical details

Technical committee: ISO/IEC JTC 1 - Information technology
SKU: ISO 7297:1985

Abstract

Overview

ISO 7297:1985 defines the mechanical, physical and magnetic characteristics of a lubricated magnetic disk intended for data storage devices with a nominal outer diameter of 200 mm (7.9 in) and inner diameter 63.5 mm (2.5 in). The standard (prepared by ISO/TC 97) specifies requirements to give satisfactory performance at approximately 95 840 flux transitions per track (title nominally cites 96 000). First published in 1985, ISO 7297 covers dimensional tolerances, environmental and operating conditions, surface quality, magnetic testing and durability criteria for high‑density disk media.

Key topics and technical requirements

Dimensional and mechanical: outer diameter d3 = 200.00 ± 0.10 mm; inner diameter d2 = 63.500 ± 0.005 mm; thickness 1.905 ± 0.025 mm; concentricity and circularity limits; clamping area specifications.
Environmental / storage: operating air temperature 15–57 °C, storage −40 to +65 °C; ambient stray field limit at disk surface not to exceed 4 000 A/m (reduced when heads concentrate fields).
Surface quality: magnetic surfaces roughness

Related standards

Other ISO standards

Overview

Key topics and technical requirements

Dimensional and mechanical: outer diameter d3 = 200.00 ± 0.10 mm; inner diameter d2 = 63.500 ± 0.005 mm; thickness 1.905 ± 0.025 mm; concentricity and circularity limits; clamping area specifications.
Environmental / storage: operating air temperature 15–57 °C, storage −40 to +65 °C; ambient stray field limit at disk surface not to exceed 4 000 A/m (reduced when heads concentrate fields).
Surface quality: magnetic surfaces roughness

ISO 7297:1985 PDF

Technical details

Abstract

Overview

Key topics and technical requirements

Related standards

Abstract

Overview

Key topics and technical requirements

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