They both do delta backups, but incremental bases it's delta on previous backup, while differential between the last full backup.
To restore from an incremental you need the last full backup and all the incrementals inbetween. If you do say a full backup every month, you'd need up to 30 good incremental backup sets to be able to restore.
For the differential you just need the last full backup in addition.
Obviously the differential one might take more and more space, depending on the changes.
To restore from an incremental you need the last full backup and all the incrementals inbetween. If you do say a full backup every month, you'd need up to 30 good incremental backup sets to be able to restore.
For the differential you just need the last full backup in addition.
Obviously the differential one might take more and more space, depending on the changes.