CV0-002 · Question #578
A cloud administrator at a media company is creating a backup strategy for large file servers hosted in a public cloud. These servers are used to host large video projects that are edited…
The correct answer is C. Differential. For large, frequently edited files where new files are rare, a differential backup strategy is best for minimizing costs by only backing up changes since the last full backup, thereby reducing daily egress traffic.
Question
A cloud administrator at a media company is creating a backup strategy for large file servers hosted in a public cloud. These servers are used to host large video projects that are edited frequently, but new files are created rarely. The cloud provider bills on ingress and egress data traffic. If the cloud administrator wants to minimize costs on backups, which of the following backup types would be BEST?
Options
- AClone
- BIncremental
- CDifferential
- DFull
How the community answered
(38 responses)- A5% (2)
- B3% (1)
- C79% (30)
- D13% (5)
Why each option
For large, frequently edited files where new files are rare, a differential backup strategy is best for minimizing costs by only backing up changes since the last full backup, thereby reducing daily egress traffic.
A clone is an exact copy, equivalent to a full backup, and would incur high costs if performed frequently for large, changing data.
Incremental backups copy data changed since the *last backup of any type*, minimizing daily transfers but leading to complex and potentially costly restoration processes requiring a full backup and all subsequent incrementals.
Differential backups copy all data that has changed since the *last full backup*. For frequently edited files with rare new creations, this minimizes daily data transfer (egress costs) compared to full backups, and simplifies restoration by only requiring the last full and latest differential backup.
Full backups copy all selected data every time, which would incur the highest egress costs for large, frequently edited files due to repeated transfer of the entire dataset.
Concept tested: Backup types and cost optimization
Source: https://learn.microsoft.com/en-us/azure/backup/backup-architecture#types-of-backups
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