ISO/IEC 29121 INTERNATIONAL STANDARD edition Fourth2021-01 Information technology Digitally recorded media for information interchange and storage Data migration method for optical disks for long-term data storage Technologies de I'information - Supports enregistres numeriquement pour échange et stockage d'information Methode de migration de données pour disques optiques pour le stockage a long terme Reference number IEC Is IS0/IEC 29121:2021(E) @IS0/IEC 2021 IS0/IEC 29121:2021(E) COPYRIGHTPROTECTEDDOCUMENT @IS0/IEC2021 Ad nigbite dusedvedutihikess otherwise sipeaifjefbrororrdyuangdim ehascaleektofioitsieaplameaitatiominplnd ofgtbisotocopying,pnbdjcationposting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISo's member body in the country of the requester. fSotobyfightfficBlandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 WBilite:copyrightfso.org Published in Switzerland ii @IS0/IEC2021-Allrightsreserved IS0/IEC 29121:2021(E) Contents Page Foreword iv Introduction. Scope 2 Normative references 1 3 Terms and definitions 1 4 General 3 5 Test method for measuring maximum data error 5.1 Maximum data error for each disk 4 5.2 Ambient condition of maximum data error measurement 5.3 Test drirea.and.sample.disk 5 5.4.1 General 5 5.4.2 Test drive check 5 6 Test interval for periodic performance test 6 7 Test result evaluation 6 7.1 Initial performance test. 6 7.2 Periodic performance test. 8 Preventionofdeterioration 8 Annex A (informative) Causes of deterioration for optical disks for long-term data storage 9 Boptical disks long-term on handling, storage and cleaning conditions for Annex (informative)forRecommendationsstorage. 11 Annex C (informative) Relation between BER and PIsum 8 .13 Dconditions Guideline for adjustment of the estimated lifetime to higher stress Annex 14 (informative) Annex E (normative) Calculation for Bmig life using Bso life and Bs life .16 .18 Annex F (normative) Guidelines for test interval and migration .22 Annex G (informative) Test area and sample disk for periodic performance test Annex H (informative) RSERmax criteria for BD recordable and BD rewritable disks .23 Annex I (informative) Guideline for treatment of defects .24 Bibliography 25 @ IS0/IEC 2021 - All rights reserved iii