Subject: Data corruption on Nemo: frame files affected Data affected: GPS range: Date corruption discovered: Cause: Comment: analysis that read this data from disk between may have used corrupt data unless internal checksum tests were performed. Policy on Nemo data management: Upon discovering any issue with data storage, we take the affected storage elements offline and check for data corruption and system issues. Any corrupt data is purged before restoring the storage elements to online status and an e-mail is sent identifying the affected data. We highly recommend users to perform internal data checksums (built into the frame library, but must be turned on).