Choose a way to keep at least one recoverable copy of your financial records separate from the computer and its connected storage, rather than relying on a single drive or account. A disconnected hard drive or portable SSD can provide a local copy; cloud backup can add an off-site copy if you can manage account recovery and retention settings. Encryption helps protect records on a lost drive, while a NAS suits households prepared to manage storage across several devices—but neither replaces a separately kept backup.
If statements, scans and account records would be difficult to replace, plan for a copy you can restore even when the computer or a connected drive is affected. The National Cyber Security Centre’s guidance on offline backups makes separation more important than relying on the speed of one device.
If a portable copy could be lost or stolen, consider how its contents are protected and how you would retain access yourself. The Information Commissioner’s Office describes encryption as a way to reduce unauthorised access after device loss; password recovery needs planning too.
If remembering to connect a drive is the obstacle, automatic cloud backup may be useful alongside a separate local copy. Before depending on the cloud account, check sign-in recovery and how long changed or deleted files remain available.
Decide how you will keep and test a separate copy before comparing drive types. A hard drive or SSD can serve as a disconnected local copy; cloud backup offers an off-site route, while a NAS helps organise several devices only if you are prepared to manage it and back it up elsewhere.
| Concern | What to check when buying | Who this matters to |
|---|---|---|
| Separate copies and recovery | Can a copy be kept offline or elsewhere? Check how you would restore a selected file, not just how backups are created. | If losing the computer could also put a connected backup at risk, I need another copy I can actually restore. Around 31% of consumers put separated, recoverable copies first. |
| Privacy after drive loss | Check the exact model’s encryption and password features, including what happens if the password is forgotten. | When I carry sensitive records, I want a lost drive to be difficult for someone else to read without locking myself out. Roughly 31% of consumers make confidentiality their primary concern. |
| Automatic off-site access | Distinguish backup from file synchronisation; check account recovery and how long changed or deleted files can be restored. | If I might forget a manual backup, I need an off-site routine that does not depend on connecting a drive each time. For around 23% of consumers, reducing that work is the first priority. |
| Capacity and several devices | Allow for the records you intend to keep, growth and retained versions; check connections or NAS backup destinations as appropriate. | With records spread across several household computers, I need enough room and a manageable way to organise copies. Around 15% of consumers prioritise capacity and multi-device management. |
A problem affecting the original files may also reach connected storage. The National Cyber Security Centre advises keeping backups from all being connected at once.
Keep at least one copy offline when it is not being updated or in a separate location, and try restoring a file after setup and periodically afterwards.
Encryption can protect records on a lost drive, but losing the password may also prevent you from reading them. Western Digital says a forgotten password on supported drives using WD Security requires erasing the drive before reuse.
Check the exact model’s password and recovery arrangements before using encryption, and keep the necessary access information separate from the drive.
For the supported Western Digital drives described in its guidance, forgetting the password can mean losing access to that drive’s contents.
An overwritten or deleted record may no longer be available after the service’s retention period. Backblaze describes a 30-day default version history for its personal service, with longer history dependent on the selected option.
Check the current version-history and account terms before relying on a service, and keep another independent copy of records you cannot readily replace.
A NAS can centralise household storage, but its location alone does not provide an off-site copy. Synology documents external, remote NAS and supported cloud destinations for Hyper Backup.
If you choose a NAS, configure a separate backup destination and check that you can restore from it.
The T7 Shield is a portable SSD option for a compact local copy that may be carried between locations.
The My Passport range is relevant to households considering a portable hard drive for a local archive.
A Synology NAS is a route to central backup management when several household devices justify the setup.
Backblaze Personal Backup is a cloud-service route for automatic computer backups rather than another drive to connect manually.
OneDrive’s Personal Vault offers an additional protected area for selected sensitive files within a Microsoft account.
These drives provide portable local-storage options, while the diskless NAS is for a household willing to configure shared storage. Whichever you consider, plan where a separate copy will be kept and how you will restore it.
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Consider this for a portable local copy of household records that you can disconnect after updating.
The listed capacity is 2TB. If protecting a lost drive matters, check this exact model’s encryption setup and what access options remain if a password is forgotten.
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Consider this when you want a larger portable local archive for the records you have chosen to retain.
The listed capacity is 5TB. Check connection and file-system compatibility with the computers you intend to use, as well as the exact model’s password arrangements if you plan to encrypt it.
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Consider this compact local-copy option if you expect to carry records between locations or update the drive frequently.
The listed connection is USB Type-C 3.2 Gen 2 and the capacity is 1TB. Samsung’s speed claims for the corresponding T7 Shield model depend on the host, cable and UASP; check your computer’s connection and keep another copy of the files.
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Consider this for a portable local archive that you intend to update and then store separately from the computer.
The listed capacity is 4TB and the product name specifies USB 3.0. If the records need protection in the event of drive loss, check the exact model’s security features before purchase.
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Consider a NAS if several household devices need centrally managed storage and someone can maintain the setup.
This is listed as a two-bay diskless unit, so storage drives are a separate setup decision. Confirm compatible drives and arrange another backup destination; keeping the NAS at home does not make its contents an off-site copy.
Do not rely on one external drive as your only backup. The National Cyber Security Centre notes that an incident can affect original files and connected backup locations, so keep a copy offline when it is not being updated or in another location, and test that you can restore a file.
Encryption is worth considering if the drive could be lost or stolen. The Information Commissioner’s Office describes its value in reducing unauthorised access in that situation; check the exact drive’s encryption and password arrangements so that you can still retrieve your records.
Check whether the service creates recoverable backups rather than only synchronising files, then review account recovery, sign-in protection and version retention. Keep recovery information separately and confirm how you would retrieve a changed or deleted record before depending on the service.
A NAS can organise local backups, but one kept at home does not by itself provide off-site separation. If protection from a home-wide incident matters, configure another destination and test recovery from that copy.
Record-retention periods are outside this storage choice. Decide which records you need to retain using guidance relevant to your circumstances, then size and organise backups for those records and any earlier file versions you intend to keep.