OneDrive vs Backblaze: Which Do You Need for PC Backup?
Consider OneDrive for working with current files across devices and sharing them. Consider Backblaze Computer Backup for recovering eligible files stored on a PC. Paying for both does not automatically protect every file twice: current Windows OneDrive integration has a documented backup limitation.
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Who this guide is for and what to prepare
- People deciding whether the OneDrive included with Microsoft 365 meets their recovery needs
- Windows users considering a separate cloud backup for photos and project files
What you need
- Exact locations and sizes of the folders you need to protect
- Current subscriptions and the longest delay before you might notice a lost file
Start with the files and failures you need to recover from
For a laptop failure, assess documents stored in OneDrive separately from projects stored on another drive. Seeing some documents in the cloud does not establish that data in every other location is protected.
OneDrive has recovery features, including a Microsoft 365 option to undo actions across OneDrive within the previous 30 days. Backblaze protects eligible local data files; it is not a complete PC-image recovery service that restores the operating system and applications.
Comparison: Working-file access and recovery coverage
Apply these differences to your actual file locations. Large capacity and a backup label are insufficient selection criteria; settings and exclusions determine the files you can recover.
Scroll horizontally to see the full table →
| Decision factor | OneDrive | Backblaze Computer Backup |
|---|---|---|
| Main workflow | Access and share synchronized files | Protect eligible PC files off-site |
| Coverage | Files stored or synchronized in OneDrive | Eligible drives and files, subject to exclusions |
| Deletion or overwrite | Check applicable version, recycle-bin, and restore rules | Check the selected Version History period |
| Complete OS and application recovery | Arrange a separate recovery method | Does not restore a complete PC image |
| Using both | Record synchronized locations and local file availability | Verify that the required files actually appear in a restore |
Do not assume Windows OneDrive files are backed up twice
At the verification date, Backblaze documents a OneDrive update that prevents backing up synchronized files. The relevant file flags can affect locally available files as well as online-only placeholders. Do not assume that selecting Always keep on this device alone resolves the limitation.
The same help page recommends downloading files to another readable local location. To assess using both services, first place a small test set outside synchronized folders and verify backup and restore. If separate copies become part of your workflow, assign a clear responsibility and schedule for refreshing them.
Check retention settings and subscription conditions before buying
Backblaze offers selectable history periods and documents a one-year option without an additional storage charge. Inspect the setting actually applied to your account. Extending retention later should not be treated as a way to recover data that has already expired.
Forever history has conditions under which older retained versions incur additional charges. Match the billing cycle, computers you want covered, and required retention against the order. An archive intended to replace local copies has different requirements from ordinary PC backup.
Verify a restore rather than stopping at a completion indicator
Use this test to decide whether the service fits your file layout before purchasing or renewing. You can use disposable copies without deleting production data.
- Create small, identifiable test files in each location you need protected.
- Review included locations and exclusions, then wait for the test files to finish processing.
- In the restore interface, verify the path and modification date, then restore into a separate folder.
- Open the restored files and, if needed, recover a previous version. Record the date, uncovered locations, and selected retention period.
- For a large recovery, plan transfer time and free destination space, including the replacement computer or drive you would use.
Inspect backup coverage folder by folder
List required locations beyond the desktop, such as production assets, game settings and documents on other drives. Record the sync and backup destination for each. A running client does not prove every required folder is covered.
OneDrive online-only files may have no local content. Check Backblaze requirements for local availability in the official instructions and establish the required copies. If disk space is insufficient, prioritize datasets or use another recovery route instead of downloading everything blindly.
Choose with recovery volume and connectivity in mind
Recovering a few documents and restoring a large asset library after PC failure have different demands. Restore a sample using the normal connection and inspect destination, archive extraction and free-space requirements. Upload time alone does not decide recovery usability.
For overwrite recovery, check whether the required date is retained in version history. Retention can depend on subscription and storage conditions, so keep an independent copy of important long-term material. Restoring outside the synchronized folder helps avoid overwriting current data before inspection.
Worked scenarios and decision boundaries
Editing current documents on another PC differs from restoring a failed PC asset collection. Map OneDrive synchronization/recovery and Backblaze backup coverage/retention to required folders. Product names do not prove everything is protected.
Distinguish OneDrive folders, online-only items, other drives and excluded data. Completion status can omit excluded files. Verify important samples appear in the backup-side listing.
Scroll horizontally to see the full table →
| Condition | Route to evaluate | Acceptance boundary |
|---|---|---|
| Edit current files on another PC | Evaluate synchronization | Current content reaches both |
| Recover failed-PC assets | Inspect backup scope | Listing and restored sample match |
| OneDrive online-only data | Check local availability requirements | Backup contains actual content |
| Recover a prior overwrite | Check retention | Required historical version selectable |
Run the trial and complete the transition
Recovery also includes post-download work: archive extraction space and application references may matter. A replacement PC matching source capacity can still lack staging space. Rehearse with a sample.
- List required folders and their sync and backup coverage.
- Identify online-only content and excluded destinations.
- Wait for sample completion and inspect backup-side listing.
- Restore recent documents and older versions outside synchronization.
- Extract required archives and open documents and dependencies.
- Record connectivity, space, unlock information and retention and review new sources.
Limitations and requirements
- NAS devices and network shares are excluded from Computer Backup. Do not confuse its coverage with the separate B2 Cloud Storage service.
- This selection guide uses official specifications. It does not claim to have measured or guaranteed coverage of your files or recovery time.
Frequently asked questions
Does synchronization mean OneDrive cannot recover deleted files?
No. OneDrive has recycle-bin, version, and eligible whole-drive recovery features. The available recovery depends on the account, retention rules, and whether data has been permanently removed.
Does subscribing to both guarantee two copies of every OneDrive file?
No. Backblaze documents limitations affecting synchronized files on Windows. Verify actual recovery, including any test copies placed outside the synchronized folder.
Do two running apps prove two copies?
Verify actual important content is included in both scopes. Online-only files require special attention to official conditions and backup-side listings.
Should I restore into the original sync folder?
Initially restoring elsewhere helps avoid overwriting current data or propagating unintended changes. Inspect the required version before putting it back into ordinary storage.
Sources and verification date
Sources checked: . These sources support the specifications, procedures or prices discussed here. Check each source for applicable conditions and current information.
Related practical guides
- Restore an Earlier OneDrive File Version Without Losing Track of Current Work
- Create a OneDrive sharing link: permissions and expiration
- Windows 11: Sync Settings and Folders with Windows Backup
- Check which folders OneDrive is holding, and the two choices when you stop
- External SSD vs HDD for backups: capacity, speed and portability
- NAS vs cloud backup: costs, recovery time and maintenance