Browse Prior Art Database

DISK DIAGNOSTICS READ/WRITE TEST

IP.com Disclosure Number: IPCOM000026215D
Original Publication Date: 1990-Oct-31
Included in the Prior Art Database: 2004-Apr-05
Document File: 2 page(s) / 78K

Publishing Venue

Xerox Disclosure Journal

Abstract

In a system having multiple hard disks for electronic storage, for example, an electronic reprographic system having three hard disks for software and image storage, it is desirable to have the disks and associated reaawrite control logic maintain the integrity of the stored data at all times. Unfortunately, systems of this type occasionally, for whatever reasons, are suspected of corrupting data stored therein. For this reason, it is necessary to provide a diagnostic test, capable of running on such a system, to verify the ability to write and read data from each of the disks.

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XEROX DISCLOSURE JOURNAL

DISK DI.AGNOSTICS READIWRITE Proposed Classification TEST U.S. C1.360/053 Daniel C. Chen
Jeff M. Goldfield

Int. C1. Gllb 5/09

In a system having multiple hard disks for electronic storage, for example, an electronic reprographic system having three hard disks for software and image storage, it is desirable to have the disks and associated reaawrite control logic maintain the integrity of the stored data at all times. Unfortunately, systems of this type occasionally, for whatever reasons, are suspected of corrupting data stored therein. For this reason, it is necessary to provide a diagnostic test, capable of running on such a system, to verify the ability to write and read data from each of the disks.

Accordingly, a diagnostic test was developed for the above electronic reprographic system to successively write and read one of a pair of complementary binary patterns (1,2) to each of the three hard disks (A,B,C) in an alternating fashim. The test was designed to assure the ability to write and read 1's and 0's in each bit position tested on each hard disk, via the complementary test patterns. Moreover, the test is designed to alternate the patterns being written and read, to provide maximum stress to the storage and control devices. The test sequence for the three disk diagnostic test includes the following 12 step:

STEP ACTION PA"XRN DRIVE

1

2

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5 6 7

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12

  Write Write Write ReaWeri fy ReadNeri fy Write ReaWeri fy

  Write Write Rea...