The law firm wants to retain more versions of the backups when possible, so the best backup method for the technician to implement in this scenario would be Incremental backup. Incremental backups only save the changes made since the last backup, which allows for more frequent backups and minimizes the amount of storage required. This would allow the law firm to retain more than three versions of backups without risking backup failure.
To retain more versions of backups, the technician should implement an Incremental backup method12 An incremental backup method only backs up the data that has changed since the last backup, so it requires less storage space than a full backup12