Onsite data backup is the backup mechanism that is performed within the organization using

external devices such as hard disks and requires human interaction to perform the backup

operations, thus, making it susceptible to theft or natural disasters. Onsite data backup means

storing the backup data on a local storage device, such as an external hard drive, a USB flash drive, a

CD/DVD, or a tape drive, that is physically located in the same premises as the original data source.

Onsite data backup has some advantages, such as fast backup and restore speed, easy access, and

low cost. However, it also has some disadvantages, such as requiring manual intervention, occupying

physical space, and being vulnerable to damage, loss, or theft. If a disaster, such as a fire, flood,

earthquake, or power outage, occurs in the organization, both the original data and the backup data

may be destroyed or inaccessible. Therefore, onsite data backup is not a reliable or secure way to

protect the data from unforeseen events. Reference:

Should I Use an External Hard Drive for Backup in 2024?, Cloudwards, February 8, 2024

How to Back Up a Computer to an External Hard Drive, Lifewire, April 1, 2022

Best Way to Backup Multiple Computers to One External Drive, AOMEI, December 29, 2020