For home-office work files, choose an external drive when internet access is unreliable or a small USB stick would not hold the files and versions you need; use a USB stick for a limited, portable set, and consider cloud or combined backup when you can maintain the connection and recovery settings. Whichever route you choose, check that the right folders and earlier versions are covered, keep a copy independent of the original, and practise restoring a file.
If invoices, contacts or project documents are needed to keep work going, prioritise a copy you can restore and a recovery process you understand. The National Cyber Security Centre (NCSC) recommends backing up critical data.
If your connection is unreliable, consider a local backup device and a routine that does not depend on being online. The NCSC identifies external storage as an option in this situation.
If you carry a small set of sensitive records, weigh portability and encryption against the risk of losing a small device. Kingston describes password and recovery options for its IronKey Vault Privacy 50 series; the NI Cyber Security Centre also advises practising data restoration.
Consider when: You need a local copy without dependable internet, or your chosen files and retained versions need more space than a small USB stick provides.
Trade-off: Connect the drive for backup sessions, then disconnect it and store it securely; a drive kept beside the computer shares some physical risks.
Consider when: You want to carry a limited set of essential files and their size fits the device.
Trade-off: Small devices can be misplaced, and their capacity may limit how many versions you keep.
Consider when: You have reliable internet and want an online copy of your work files.
Trade-off: Recovery depends on what the service covers, its retention settings and your access to the account; synchronisation alone is not necessarily an independent backup.
Consider when: Losing either the computer or one backup copy would seriously interrupt your work, and you can maintain both destinations.
Trade-off: You will have another destination and routine to manage; check the rules for any external drive included in a cloud backup.
NCSC guidance for small organisations identifies unreliable internet and independent copies as practical backup considerations. Choose a route around your files, computer and ability to restore them, rather than capacity alone.
| Concern | What to check when buying | Who this matters to |
|---|---|---|
| Recovering the right files | Check that the backup includes your work folders and the versions you may need. Microsoft says File History can include folders added to a library; practise restoring a file. | If a missing invoice or project file could interrupt my work, I want to know I can restore the right copy. Around 29% of consumers put recoverability first. |
| Keeping an independent copy | Check where each copy is stored and whether the same device, account or location could affect both. The NCSC advises keeping an independent copy. | If one incident could reach the original and its backup, I want a copy kept separately. Around 23% of consumers put independence first. |
| Working without reliable internet | Check whether the backup can run locally and whether your computer has the required connection. The NCSC recommends external storage when internet access is unreliable. | If my connection is unreliable, I need a backup I can create and access offline. Around 18% of consumers put offline operation first. |
| Capacity and compatibility | Match capacity to the files and versions you intend to keep, then check the exact computer, connection and backup software. For Time Machine, Apple recommends a device with at least twice the Mac's storage capacity. | If my files, computer and backup software must all fit the same setup, I want to check them together. Around 18% of consumers put capacity and compatibility first. |
| Maintaining the routine | Check the backup schedule, retention settings and account tasks you will need to manage. | If I need a routine I can keep up with, I want to understand the ongoing steps before choosing. Around 12% of consumers put a sustainable routine first. |
A service’s own version or deleted-file recovery may not provide the independent copy you need for critical work.
Check how to export and restore essential files, and keep an independent copy.
Connected storage can be affected by malware, and keeping both copies in one place exposes them to some of the same physical risks.
Disconnect the device between backup sessions and consider keeping a separate copy elsewhere.
Kingston says the IronKey Vault Privacy 50 crypto-erases after ten consecutive incorrect administrator-password entries. Apple also says an encrypted Time Machine backup requires its password for restoration.
Set up and safely retain the recovery credentials before relying on the device as your only backup.
Different services and settings can retain deleted files or earlier versions differently, which affects what you can recover.
Check the retention settings and account requirements for the specific service and test a restoration.
The One Touch with Password portable hard-drive line is relevant for local work-file backups; the researched UK candidate is the black 2TB STKY2000400.
IronKey Vault Privacy 50 is relevant when encrypted portable USB storage matters more than holding a large archive.
Computer Backup is relevant to buyers considering cloud backup for a computer and eligible directly attached external drives.
IDrive’s UK service is relevant to buyers who want scheduled backup from multiple devices within one account.
These options are locally connected storage for work files: portable external drives for larger file sets and a USB stick for a more limited set. They do not represent cloud backup services.
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Consider it for a local copy of work files; confirm your backup routine covers the folders you need and that you can restore them.
4 TB capacity; USB Type-C; USB 3.2 Gen 2x2.
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Consider it for local computer storage; check that the backup software includes your work folders and that the connection suits your computer.
1TB capacity; USB Type-C; USB 3.2 Gen 2 (3.1 Gen 2).
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Consider it for a portable copy of a limited set of work files; check that the files and any versions you intend to keep fit the device.
64GB capacity; the listing identifies it as a USB flash drive.
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Consider it for a local copy of work documents; check that your backup software and computer support the intended setup.
5TB capacity; USB 3.0; the listing describes use with Windows computers.
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Consider it for local work-file backups; check compatibility with your operating system before setting it up.
4TB capacity; USB 3.0. The product description says reformatting may be required for Mac or other operating systems.
Not automatically. The NCSC advises checking that essential data is backed up, that you know how to restore it, and that you have an independent copy rather than relying only on a service’s own version or deleted-file recovery.
Base capacity on the files you will include and the versions you intend to retain. For Time Machine specifically, Apple recommends a storage device with at least twice the Mac’s storage capacity; that recommendation is not a minimum for every document-only backup.
Yes. Microsoft says folders elsewhere can be added to an existing or new library for backup. Check which folders are selected and restore a sample from each important work location. Microsoft’s support page covers Windows 11 and Windows 10; it states that free Windows 10 support ended on 14 October 2025.
Yes, for a standalone local copy, keep it secure and reconnect it for your planned backup sessions. If Backblaze also backs up that external drive, the cloud copy depends on the selected history setting and the service’s disconnected-drive rules.
Where UK GDPR applies to your processing, the Information Commissioner’s Office (ICO) says security measures should support confidentiality, integrity, availability and timely restoration, with effectiveness testing. The ICO describes encryption as a measure to consider in light of the circumstances and risks, not as a blanket requirement to buy a particular encrypted product.