SNIA-SDC23-Landsman-Data-Retention-Metrics-DNA-Data-Storage-System_0.pdf

1、1|2023 SNIA.All Rights Reserved.Virtual ConferenceSeptember 28-29,2021Creating confidence in preserving digital data in DNADave Landsman,Marthe Colotte,Jacques Bonnet,Chris TakahashiData Retention WorkgroupDNA Data Storage Alliance2|2023 SNIA.All Rights Reserved.DNA Data Retention Workgroup-Overview

2、Overall Mission Enable users of DNA-based storage systems to have confidence that the data they store in DNA can be reliably preserved and recoveredConsidering a number of ways to build this confidence in the ecosystemFirst Spec Stability Evaluation Method for DNA Data Storage Containment Systems 3|

3、2021 Storage Developer Conference.Insert Company Name Here.All Rights Reserved.A brief aside:How did the storage industry try to resolve endurance ratings for SSDsJEDEC JESD 218/2194|2023 SNIA.All Rights Reserved.The SSD Endurance Problem,circa 2010In 2008-2009,SSDs were still newAnd a question was

4、growing re:SSDs:I hear SSDs“wear out”;what does that mean and how long does it take?How do I compare wear out claims(endurance)between vendors?5|2023 SNIA.All Rights Reserved.Establish standard reference use conditions,success criteria,and metricJESD 218/219:SSD Reqts and Endurance Test MethodTBW:Te

5、rabytes of data that can be written to a drive over its 3-5 year lifetime,assuming a standard set of Reference Use Conditions(Workload,Temp,Duty Cycle)and meeting standard Success Requirements(FFR&UBER)Application ClassStandard Workload(JESD 219)Active Use Period(power on)Retention Period(power off)

6、Functional Failure Rate(FFR)UBERClientTrace based40oC8hrs/day30oC 1yr3%10-15EnterpriseSPC based55oC24hrs/day40oC3 months3%10-16Reference Use Conditions Over Drive LifetimeSuccess RequirementsFirst we needed a standard metric6|2023 SNIA.All Rights Reserved.Accelerated Wear:Simulate lifetime of wear v