Disk-to-Disk (D2D) Backup

Dive into the world of Disk-to-Disk (D2D) Backup, a modern data protection method that involves direct backup from one disk to another.

Definition

Disk-to-Disk (D2D) backup is a data backup method that involves copying and storing data from a source disk directly to a target disk, without intermediate tape or other removable media. It provides faster backup and restore speeds compared to traditional tape-based backup methods.

Explanation

In a D2D backup scenario, data is read from the source disk (such as a primary storage system or server) and written directly to the target disk, which can be a dedicated disk array, a network-attached storage (NAS) device, or a cloud storage system. This approach eliminates the need for tape drives and media, reducing backup and restore times.

D2D backup offers several advantages over tape-based backup methods. It provides faster backup and restore speeds, as disk-based systems can read and write data more quickly than tape drives. Additionally, disk-based backups offer random access to data, enabling faster data recovery compared to sequential access in tape-based backups.

D2D backup also simplifies backup management and reduces the risk of data loss. With disk-based backups, there is no need to manage and track physical tape cartridges, and the risk of tape failure or damage is eliminated. Disk-based backups can also be easily replicated to remote locations for offsite data protection and disaster recovery purposes.

Related terms

• Backup-to-disk (B2D): A general term referring to the process of backing up data to disk storage.

• Tape backup: A traditional backup method that uses tape drives and tape media to store data backups.

• Backup appliance: A purpose-built hardware device that combines storage capacity and backup software for disk-based backups.

• Data deduplication: A technique used to eliminate redundant data within a storage or backup system, reducing storage space requirements.

• Cloud backup: A backup method that involves copying and storing data in cloud-based storage systems, offering scalability and remote data protection.

• Replication: The process of copying data to a secondary location for redundancy and disaster recovery purposes, often used in conjunction with D2D backup for data protection.