What matters when choosing a backup route?
Decide where a recoverable copy will live, then check whether your computer can make and restore the backups you need.
Portable hard drive
Choose it when: You want a removable destination for local file backups that you can store away from the computer.
Bear in mind: A drive kept in the same location still needs a separate-copy plan.
Portable SSD
Choose it when: A compact drive you can carry is central to your local-copy routine.
Bear in mind: Portability does not replace a second, separately held copy.
Desktop external drive
Choose it when: One computer will normally back up to a drive kept in a fixed home location.
Bear in mind: Keeping it alongside the computer leaves both exposed to a loss affecting that location.
Cloud copy alongside local backup
Choose it when: Important photos or documents need a copy outside the home as well as a local restore option.
Bear in mind: Check account access and security rather than relying on the online account alone.
Network-attached storage
Choose it when: Several devices need a shared destination or supported scheduled, versioned backup tasks.
Bear in mind: NAS needs configuration and maintenance, plus another destination for its own backup.
| Concern |
What to check |
Who this matters to |
| Separate, recoverable copies |
Where each copy will be kept, and whether one can be stored apart from the computer. |
I want family photos to remain recoverable if an incident affects both my computer and a nearby drive. Around 36% of consumers put a separately held copy first. |
| Routine backup and restoration |
Which folders the backup tool covers, its supported destination and how earlier versions are restored. |
I need regular copies of personal files without remembering every backup myself. Around 29% of consumers primarily need routine backups they can restore. |
| Portable local storage |
The exact capacity, connector and whether the drive works with the intended computer and backup tool. |
I plan to connect a drive when needed and put it away afterwards, so carrying and connecting it matter. Around 21% of consumers prioritise a removable local copy. |
| Shared, versioned storage |
Device compatibility, supported backup tasks and where a second copy of NAS data will go. |
Files are spread across several household devices, and I need a shared place to manage backups. Around 14% of consumers put multi-device backup first. |
Portable drives for local backup copies
These portable hard drives and SSDs are options for keeping a removable local copy of household files. Check capacity and connection against your backup routine, and arrange a separately held copy for losses that could affect the home.
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Western Digital My Passport portable hard drive, 2TB, black
A removable local destination for copies of household files. Check that its connection and your chosen backup software suit the computer; keep another copy separately.
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Western Digital My Passport Ultra for Mac portable hard drive, 5TB, silver
A higher-capacity portable local-copy option for files you intend to back up. Confirm the connection, backup-tool compatibility and exact-model warranty terms before buying; it is not an off-site copy.
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Samsung MU-PE1T0S portable SSD, 1TB, black
A compact, removable destination for a local file copy. Its title specifies USB Type-C and USB 3.2 Gen 2; confirm the host connection and backup-tool compatibility. Keep another copy elsewhere.
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Samsung MU-PG4T0B portable SSD, 4TB, black
A portable local-copy option when you need the stated 4TB capacity. Its title specifies USB Type-C and USB 3.2 Gen 2x2; check the computer's port and intended backup software, and keep a copy apart from this drive.
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SanDisk Portable SSD, 2TB
A removable 2TB local destination for household files. Confirm its connector and compatibility with your computer and backup routine, and plan another separately held copy.
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Home-backup questions
Is one external drive enough for home backups?
Not if it is your only additional copy and you need protection from a loss affecting both the drive and computer. The NI Cyber Security Centre advises three copies on two devices, with one kept offline in a different location; decide where you will keep and restore each copy.
Can an external drive back up Windows files automatically?
Yes, Microsoft Support says File History can make regular backups to an external drive or network location and restore earlier versions of included files. Check which folders it covers and ensure the destination is available when backups are due.
How large should a Mac Time Machine drive be?
Apple Support says the backup disk should ideally have at least twice the Mac's storage capacity. A smaller disk can be used, but Time Machine may remove older backups as space runs low, so consider how long you want to retain versions.
Can I use a NAS with Mac Time Machine?
Yes, if the third-party NAS supports Time Machine over SMB, as specified by Apple Support. Check the exact NAS documentation and Mac requirements, and back up NAS-held files to another destination.
Will a drive warranty recover lost family photos?
Do not rely on it for that purpose: Seagate's UK limited warranty excludes data loss and related recovery work. Check the selected model's terms and keep separate copies before a drive needs repair or replacement.