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My #1 concern with Arq is the integrity of backup data. This usually hasn't been an issue with using SFTP, S3 or Glacier as a backup destination but uploading t
by brandon272 10y ago
My #1 concern with Arq is the integrity of backup data. This usually hasn't been an issue with using SFTP, S3 or Glacier as a backup destination but uploading to OneDrive or Amazon Cloud Drive usually ends up with a lot of backup errors.
The errors seem to be entirely the fault of OneDrive or ACD but it leaves me wondering what files are backed up (apparently Arq doesn't re-try backing up whichever files were affected until the next backup session), and what the integrity is of files that do exist at the destination.
I'm also unclear on whether any checksum validation is done by Arq (or even can be done) on uploaded files.
- moduspwnens14 10y agoI've never used OneDrive or Amazon Cloud Drive, so I've not seen that. Arq does have a button for validating data manually and a separate option for each backup destination that specifies how often (in days) backups should be validated. Whether that's a checksum or not, I don't know.
- sreitshamer 10y agoIt recalculates checksums of your files and compares them to checksums of the backup data at the destination. (I work on Arq)
- sreitshamer 10y agoArq does validate checksums of the backup data. If there are transient errors it should be retrying. Please send mail to support@arqbackup.com so we can diagnose the problem and fix it. (I work for Arq)