Magnetic storage

Magnetic storage is a type of data storage that uses magnetism to store and retrieve digital information. The most common type of magnetic storage is the hard disk drive (HDD), which is used in computers to store operating system files, application files, and user data. HDDs are also used in video recorders, digital video recorders … Read more

Bidirectional replication

Bidirectional replication is a data backup and disaster recovery technique whereby data is replicated in both directions between two data storage devices or locations. This ensures that both copies of the data are always up-to-date, providing a high level of protection against data loss. What is bidirectional and unidirectional replication? Bidirectional replication is a type … Read more

Backup and recovery testing

Backup and recovery testing is the process of validating the data backup and recovery procedures of an organization. This includes testing the backup media and software, as well as the backup process itself. The purpose of backup and recovery testing is to ensure that data can be recovered in the event of a disaster, such … Read more

Write back

In data backup and disaster recovery, “write back” is a technique in which data is first written to a temporary location and then, once it has been verified as correct, is written to the original location. This ensures that the original data is not corrupted by any errors that may occur during the writing process. … Read more

Write through

The term “write through” refers to a data backup strategy in which data is written to both the primary storage location and the backup storage location simultaneously. This ensures that the data is always available in both locations in case one of them becomes unavailable. What is write back and write through? Write back is … Read more

Recovery time objective (RTO)

The Recovery Time Objective (RTO) is the maximum tolerable amount of time that data can be unavailable after a disaster. The RTO is a critical component of a disaster recovery plan, as it sets the expectation for how long data will be unavailable in the event of a disaster. In order to determine the RTO, … Read more

Recovery point objective (RPO)

The recovery point objective (RPO) is the maximum tolerable period of data loss measured in time. The RPO is the point in time to which the data must be recovered. For example, if the RPO is four hours, the data that has been modified or created within the four-hour period prior to a disaster must … Read more