External hard drives (HDD and SSD) in 2026: how to choose the best one for backup, photos, and work.

External hard drives (HDD and SSD) in 2026: how to choose the best one for backup, photos, and work.

Buying an external hard drive seems simple… until doubts arise: HDD or SSD? USB-C 10Gbps or 20Gbps? Can it be used on Mac and Windows ? And how do you ensure that your backup doesn't fail when you need it most?

This guide helps you choose the ideal external HDD (hard drive) or SSD for your needs — focusing on Portugal , online shopping, and "regret-proof" choices.

1) HDD vs. External SSD: Which is better (in real-world use)?

External HDD (hard drive)

When to choose: high capacity for a good price (backup, archive, saved photos/videos).
Why: HDDs continue to have a strong advantage in cost per TB .

Strengths

  • More competitive €/TB for 2TB, 4TB, 8TB

  • Great for backup and archiving.

Weaknesses

  • Slower (especially with small files)

  • It has mechanical parts → less "fall-friendly" during transport.

External SSD

When to choose: speed, portability, work (editing, projects, games, on-the-go use).
Why: SSDs have no moving parts and tend to withstand shocks/drops better.

Strengths

  • Much faster (copying/opening large projects)

  • More resistant to impacts (in general)

  • Compact and lightweight

Weaknesses

  • More expensive per TB (especially on 4TB+)

Simple rule (OneBox):

  • Cheap and large backup → External HDD

  • Fast and portable work → External SSD

  • Best of both worlds → 1-2TB SSD for daily use + 4-8TB HDD for backup

2) Capacity: 1TB, 2TB, 4TB… how to decide without overpaying?

  • 1TB : documents + photos + light use

  • 2TB : “sweet spot” for most (more headroom)

  • 4TB : large photo/video library, full backups

  • 6–8TB+ : Serious storage (4K video, large projects, backup from multiple devices)

Quick tip: if you want to back up your entire computer + cell phone + photos, 2TB usually becomes insufficient sooner than it seems.

3) Speed ​​and connection: USB 5/10/20Gbps, USB-C, USB4

This is where many people go wrong: they buy a fast SSD, but connect it to a port/cable that "chokes" everything.

USB 3.2 (most common speeds)

The USB-IF (USB organization) defines these rates:

  • USB 3.2 Gen 1 = 5Gbps

  • USB 3.2 Gen 2 = 10Gbps

  • USB 3.2 Gen 2x2 = 20Gbps

What does this mean in practice?

  • For HDDs , up to 5Gbps is usually sufficient.

  • For SSDs , 10Gbps is already very good; 20Gbps/USB4 makes a difference if you frequently move huge files.

USB4 (for "top" SSDs)

USB-IF has released an update that allows speeds of up to 80Gbps and, in certain scenarios, asymmetric mode of up to 120Gbps in one direction .
This is especially relevant for very fast external SSDs and professional workflows.

Thunderbolt (especially for Apple users/creators)

Thunderbolt 4 maintains 40Gbps and higher minimum requirements (including requirements for PCIe), which usually benefits fast external storage.

Quick checklist to avoid limiting performance.

  • Does the PC/Mac port support the speed? (10Gbps / 20Gbps / USB4 / Thunderbolt)

  • Cable is the correct one (very important)

  • The drive is truly of that class (it doesn't just have "USB-C" on the connector).

4) Mac + Windows compatibility: which format to choose?

If you want to use the same disk on both Mac and Windows , the most common format is exFAT .

Apple recommends:

  • MS-DOS (FAT) for disks up to 32GB

  • ExFAT is used for disks larger than 32GB when Windows compatibility is desired.

Apple lists Disk Utility as supporting formats such as APFS (Mac) and MS-DOS/ExFAT compatible with Windows.

Choose by scenario

  • Mac only → APFS (better macOS integration)

  • Mac + Windows → ExFAT

  • Windows only → (often NTFS; depends on your usage)

5) Security: encryption (highly recommended for portable drives)

If the hard drive is going to leave your home/office, encrypt it . If you lose the drive, the data is protected.

  • Windows (BitLocker) : Microsoft describes BitLocker as drive encryption (in Pro/Enterprise/Education editions).

  • Mac (Disk Utility) : Apple demonstrates how to encrypt a device using Disk Utility (encrypted volumes options).

6) Proper backup: 3-2-1 rule (to avoid losing everything)

If the data is important (documents, family photos, accounting, projects), follow the 3-2-1 rule:

  • 3 copies (1 main + 2 backups)

  • 2 different types of media

  • 1 off-site copy

This reduces the risk of disk failure, theft, fire, and even ransomware.

7) Quick recommendations by profile (decision in 20 seconds)

A) Home backup (photos + documents)

  • External HDD 4-8TB + encryption

  • Second backup “off-site” (cloud or another disk saved elsewhere)

B) Work and portability (projects, editing, design)

  • External SSD 1–2TB with USB 10Gbps (minimum)

  • It moves huge files daily: 20Gbps/USB4

C) Mac + Windows

  • Format as ExFAT

  • Consider encryption and folder organization (avoids clutter).

FAQ

External HDD or external SSD: which lasts longer?
It depends on the usage. SSDs have no moving parts and tend to withstand shocks/drops better, but any drive can fail — that's why 3-2-1 backup is what really "guarantees" it.

Is USB-C synonymous with fast?
No. USB-C is the connector; the speed depends on the standard (5/10/20Gbps, USB4…).

What's the best option for Mac and Windows?
In general, ExFAT is used for disks larger than 32GB when you want Windows compatibility.

Do I really need encryption?
If the drive is portable and you have personal/business data, yes — BitLocker on Windows and encryption options on macOS help protect against loss/theft.