Does the server clear failed file back ups that are not shown as "backed up"

Hi, we have a client that is failing with “ERROR” Creating directory [correct folder name] failed. File exists (errorcode=17) the backup folder set is on the storage disk taking about 50Gb of room, as this was failed its not listed it in the “backup” tab under the machine to allow a restore, so will the server clear this “dead / failed” stored data or do we manually have to find them failures and clear them?

Yes, it will clear it in the cleanup time window.