Choose backup storage around what you need to restore, how much history you want to keep and where a recoverable copy will live. An external HDD provides a directly attached local destination; an external SSD suits frequent portable copying; and a compatible spare drive can be used in an enclosure. A NAS or cloud service can add another destination, but a permanently connected local drive alone may be affected by the same incident as the PC.
A full or ageing backup drive does not automatically call for the same kind of replacement: the decision changes with the files protected, the copying routine and the need for a separate recoverable copy.
If photos, videos and documents are accumulating, check which folders the backup software protects and how many older versions you intend to retain. Microsoft Support says File History makes regular copies to an external drive or network location; Seagate notes that an operating system may show less capacity than a drive’s label.
A compact external SSD may suit repeated large-file copies between locations. Check the PC port and cable before choosing by a quoted transfer rate: Samsung says the stated maximum speeds for its T7 Shield require a USB 3.2 Gen 2 host and cable, with UASP enabled.
Adding capacity is not enough if the only backup remains exposed alongside the PC. The National Cyber Security Centre describes ransomware incidents affecting both original files and connected backup drives; plan for a copy that can remain separate and check that you can restore it.
Decide what must be recoverable and where the backup will be kept before choosing a storage format. Then check the backup software, required capacity and connection against that plan.
Consider it when: You want a directly attached local backup and can select capacity for the files and versions you will retain.
Trade-off: A drive left connected can be affected by an incident involving the PC; a local copy is not an off-site copy.
Consider it when: You frequently carry the backup or copy large files and have confirmed that the available capacity meets your retention needs.
Trade-off: Quoted transfer speeds depend on the PC, cable and supported connection mode, and the SSD still needs a separate-copy plan.
Consider it when: You already have an internal drive whose interface and physical format match a suitable USB enclosure.
Trade-off: Compatibility must be checked for the exact drive and enclosure; an M.2 label alone does not establish a match.
Consider it when: Several PCs need a network destination, or a managed local backup routine is worth the additional setup.
Trade-off: The backup application must work with the configured network location, and a NAS is not automatically off-site.
Consider it when: You want an off-site destination as well as a physical copy and can maintain access to the account.
Trade-off: Storage allowance, version retention, recovery and account security depend on the service and plan.
| Concern | What to check | Who this matters to |
|---|---|---|
| Recoverable separation | Can a physical copy be disconnected after use, or will another copy be kept off-site? Check the restore process too. | I need a backup that remains available if an incident affects my PC and its connected storage. Around 33% of consumers put a separately recoverable copy first. |
| Capacity and retention | Identify protected folders, retained versions and expected growth; allow for the difference between labelled and usable capacity. | My file archive is growing, and I want to keep earlier versions rather than just today’s files. For around 25% of consumers, fitting that backup history is the primary concern. |
| Portable copying | Confirm the PC port, cable and any connection modes required for a quoted SSD transfer rate. | When I carry backups between locations or copy large files regularly, I want the routine to be practical to repeat. Faster, portable copying comes first for around 17% of consumers. |
| Reuse or shared access | For an enclosure, match the drive’s interface and size; for NAS, check backup-software access to the network share. | I want to use a spare drive or give several PCs a backup destination, even if setup takes more work. Around 17% of consumers prioritise one of those flexible routes. |
| Access protection | Check the chosen model’s or service’s encryption options, operating-system support and recovery-key arrangements. | My backup holds personal files, so I need to control who can open it without losing access myself. Protecting backup content is the leading concern for around 8% of consumers. |
The National Cyber Security Centre describes ransomware incidents that affected original data and connected USB or network backup drives. A working local backup can therefore share some of the PC’s exposure.
Keep a recoverable copy separate from the PC, such as a physical backup disconnected when it is not in use or an appropriately secured off-site copy. Check that restoration works before relying on the arrangement.
Backup scope, retained versions and future changes all affect the space required. Microsoft Support describes File History’s regular copies, while Seagate explains why reported drive capacity can differ from its label.
List the folders your software will protect, decide how long to retain versions and leave room for growth before selecting a drive capacity.
Sabrent specifies both M.2 SATA and NVMe support for its EC-SNVE enclosure in listed sizes, but those specifications do not apply to every enclosure or spare SSD.
Match the existing drive’s interface, length and keying to the exact enclosure, then check its USB connection and thermal requirements.
Retention depends on the service and its settings. Microsoft Support describes a 30-day version-history period in its cited OneDrive guidance; that period should not be assumed for another service or backup arrangement.
Check the current storage allowance, version-retention rules, recovery steps and account security before relying on cloud storage alongside a physical copy.
These examples illustrate different storage formats and software capabilities; check the specifications of the exact model or system you intend to use.
Its One Touch external HDD and SSD lines are relevant to directly attached PC backups.
The T7 Shield is an external SSD example for portable copying.
Supported Synology NAS systems offer a managed network-storage route rather than a simple plug-in USB drive.
Its EC-SNVE enclosure is an example of a route for reusing a compatible internal M.2 SSD as external USB storage.
Yes. Microsoft Support says File History can make regular copies to an external drive or network location. Check its protected libraries and add any other folders you need included before treating it as a complete copy of your files.
Choose capacity for the files your backup software actually protects, the versions you want to retain and expected growth—not just the space used by today’s visible files. Seagate notes that an operating system can report less capacity than a drive’s labelled GB or TB figure, so leave room when making that calculation.
Not necessarily. Samsung says the T7 Shield’s quoted maximum sequential speeds require a USB 3.2 Gen 2 host and cable with UASP enabled. Check your PC’s port, the cable and the exact SSD specifications before making transfer speed the reason to choose that route.