Who needs which backup arrangement?

Family-photo protectors

If photos and personal memories would be difficult to replace, prioritise a separate copy that can survive a loss affecting your computer. The NI Cyber Security Centre also advises keeping a copy offline in a different location.

People backing up a computer

Windows and Mac users may want regular copies of personal files and a way to recover earlier versions. Check what the chosen operating-system backup feature actually saves and which destinations it accepts; Microsoft Support describes external-drive and network-location options for File History, while Apple Support documents Time Machine destinations.

Multi-device households

A shared network destination can help organise backups from several devices. Check each device's backup-tool compatibility and plan another copy of the files held on the NAS; Apple Support specifies Time Machine over SMB for a compatible third-party NAS, while Synology documents separate backup destinations for supported configurations.

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.

Backup mistakes to avoid

  • Treating a connected drive as the whole backup plan

    Fire, theft or damage at home can affect a computer and a drive stored beside it. Synchronisation also needs scrutiny: a useful backup must leave you with a separate copy you can restore.

    Plan another copy in a different location. The NI Cyber Security Centre advises three copies on two devices, with one kept offline elsewhere.

  • Choosing capacity for today's files alone

    Retained backup versions need space beyond a one-off copy. Apple Support notes that Time Machine can remove older backups as its disk fills.

    Check what you intend to back up and allow for retained versions and growing files. For Time Machine, Apple says a backup disk should ideally have at least twice the Mac's storage capacity.

  • Assuming any NAS supports your backup software

    Apple Support says a third-party NAS used with Time Machine must support Time Machine over SMB. NAS features and destinations can also depend on the particular device and configuration.

    Check the exact NAS model, software and intended destination before buying, then decide how its stored files will be copied elsewhere.

  • Expecting a drive warranty to restore lost files

    Seagate's UK limited warranty excludes data loss and related recovery work. Hardware cover is not a substitute for another recoverable copy.

    Keep separate backups and retain your purchase records; check the warranty terms for the exact drive before making a hardware claim.

Relevant brands for reference

Seagate

A consumer external-drive brand to consider for a local backup destination.

  • Seagate's UK limited warranty describes cover for eligible defects; check the period for the exact model and seller.
  • The warranty excludes data loss and related recovery work, so keep another copy of important files.

Samsung

A portable SSD brand relevant to compact, USB-connected local copies.

  • Samsung UK provides portable SSD support and information on arranging storage-product repairs.
  • Check service and warranty arrangements for the exact SSD and keep proof of purchase.

SanDisk

A portable SSD brand to consider when a carryable local destination suits the backup routine.

  • SanDisk's UK Extreme Portable SSD listing describes several capacity options, up to 8TB in that range.
  • Check the exact model, capacity, cable and host connection; a product-line compatibility claim does not establish your backup workflow.

Synology

A NAS ecosystem for households considering network destinations and managed backup tasks.

  • Synology documents scheduling, version retention and multiple destinations for supported Hyper Backup configurations.
  • Check the NAS model, software version and destination. A NAS kept at home still needs a separate backup elsewhere.

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.

Western Digital My Passport 2TB portable hard drive in black

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 5TB portable hard drive in silver

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 1TB portable SSD in black

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 4TB portable SSD in black

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

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.