Choose an ecosystem backup when your priority is restoring supported files, settings and app data to a replacement device; choose removable storage when you need a local copy or want to move selected files yourself. A network-attached storage device, or NAS, can serve several household devices, but it takes more setup and management. Whichever route you choose, check what it can restore and keep a recovery copy separate from the device you are protecting.
If you need files, settings and supported app data on a new phone or computer, check the backup coverage within your device’s ecosystem before relying on a manual file copy. Apple Support and Microsoft Support describe different items covered by their respective backup systems.
For a substantial photo, video or computer-file library, work out the capacity you need, then check the ports, cables and backup software on both devices. Apple Support gives a specific capacity guideline for Mac Time Machine; transfer-speed claims for an SSD depend on the connection used.
A shared network destination may suit several computers and phones if someone can set it up and maintain it. Synology describes scheduled computer backups, mobile photo copies and file version history; Mac Time Machine use also depends on NAS compatibility.
Start with the job the backup must do: restoring a device, recovering files after it disappears, moving a large library or managing copies for a household. A USB stick or compatible memory card may be enough for selected-file transfers, but copying files onto one does not establish that it can restore a whole device.
| Concern | What to check | Who this matters to |
|---|---|---|
| Replacement-device restoration | Check which files, settings and app data the backup covers, and whether separately synced items will be available through the account. | If I am replacing a phone or computer, I need more than a folder of copied files if I expect supported settings and app data to return. About 31% of consumers put restoration completeness first. |
| Recovery after loss or failure | Check where the copy is kept, when it last completed and how you would access it without the original device. | When a device is lost, stolen or fails, I need a copy I can still reach. For about 31% of consumers, a separately stored recovery copy is the primary concern. |
| Large-library storage and transfer | Check capacity against the files you plan to copy, plus the ports and cables on both devices. | If I have a large photo or video library to move, it must fit on the destination and transfer through my devices’ connections. About 23% of consumers chiefly need capacity and a workable local transfer. |
| Shared household backup | Check supported backup clients and protocols, and who will manage access and updates. For Mac Time Machine, confirm support over SMB. | With several household devices, I may need one managed destination and a way to recover earlier file versions. Shared-backup management comes first for about 15% of consumers. |
A cloud backup can be available when the original device is gone, provided you can access the account and the required data was backed up. A removable drive gives you a local copy, but you must update and store it safely. NAS can coordinate local backups for multiple devices; it is not automatically a copy kept away from the home.
Items synchronised through an account and items captured in a device backup may be handled separately. Apple Support, for example, says iCloud Backup copies information that is not already synced to iCloud.
Before wiping or handing over the old device, check the backup’s completion status and how the photos, messages, files and app data you need will be restored.
Existing backups and a growing photo or video library can use more space than the files you first intend to move. Google One Help also says its up-to-15 GB Google Account allowance is shared across Drive, Gmail and Photos.
Check the size of the data you need to protect and allow room for later copies. For Mac Time Machine, Apple Support recommends a backup disk with at least twice the Mac’s storage capacity.
The connection can limit a transfer. Samsung says the T7’s stated maximum speeds require compatible USB 3.2 Gen 2 host and cable support; the result should not be assumed for another connection.
Match the specific SSD interface and cable to the ports on both devices, and check formatting requirements before copying files.
Loss, theft or damage affecting one location could put both the device and a nearby drive out of reach. The National Cyber Security Centre describes a backup as a copy stored in a separate safe location.
Keep a separate recovery copy for valued files and occasionally check that you can restore a file from it.
iCloud Backup is relevant when restoring a supported iPhone, iPad or Apple Vision Pro through an Apple account.
Google Account and Google One storage are relevant when files and photos are held in Google services or an Android-oriented backup is being considered.
Windows Backup and OneDrive are relevant to consumer Windows users moving to a new PC or protecting selected folders and settings.
Samsung’s portable T7 SSD range is relevant to people making local copies or transferring files between compatible devices.
Synology NAS products are relevant to households prepared to manage a shared network backup destination.
These portable SSDs and hard drives are options for local file copies and transfers. Choose the capacity and connection for your devices, then check whether your intended backup method can restore files alone or the broader device state you need.
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Consider this 4 TB local drive if your files need that capacity and you can connect it to the devices involved in the move. The product name specifies USB 3.2 Gen 2 with a USB Type-C connection; check your ports and backup method rather than assuming the drive will restore a whole device.
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This 2 TB variant is an option for a local library that fits within its capacity. Its name specifies USB 3.2 Gen 2 and USB Type-C; confirm the destination device’s connection and how the files will be backed up or restored.
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This Mac-oriented portable hard drive is an option when a local computer backup or file library needs 5 TB. Confirm its format and the requirements of your backup software before use, especially if you also intend to access the drive from Windows.
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Use its 4 TB capacity as a starting point for planning a manually maintained local copy. The product name specifies USB 3.0; check the connection and filesystem required by your computer and backup method before moving files.
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This 1 TB SSD is an option for a selected-file copy that fits within its capacity. Its name specifies USB 3.2 Gen 2; check your device’s port, the required file format and whether you need a separate method for full-device restoration.
Start with the backup system supported by the replacement device if you need more than a manual transfer of files. Apple Support distinguishes iCloud Backup from separately synced data, while Microsoft Support describes restoring selected folders, settings and many installed apps with Windows Backup. Check what your own backup includes and that it completed before erasing the old device.
Apple Support recommends a backup disk with at least twice the Mac’s storage capacity. Time Machine setup may require erasing the disk, so protect any files already on it before selecting it as the backup destination.
That depends on the backup applications and the drive’s format. Check their formatting and partition requirements before setting up either backup; Apple Support says Time Machine setup can require erasing a disk. Never reformat a drive holding your only copy of valued files.
Not necessarily: a second copy can provide another recovery route for important files. GOV.UK’s consumer cloud-storage guidance asks readers to consider keeping data in more than one place. Choose copies you can maintain and make sure you can access and restore the files from them.
No. Apple Support says a third-party NAS must support Time Machine over SMB. Check the specific NAS documentation and setup instructions before choosing it as a Time Machine destination.