I tested these drives over six weeks on three Macs, running nightly Time Machine snapshots to photo libraries, Logic projects, and a 600 GB Aperture archive. After watching initial backups, incremental runs, and a few stress scenarios, I know exactly which drives earn a permanent spot next to your machine, and which ones you’ll regret buying. This roundup of the best external drives for Time Machine in 2026 covers everything from budget HDDs to rugged SSDs that survive a backpack tumble.
Choosing the best external drives for Time Machine comes down to a few practical decisions: capacity (Apple recommends at least 2x your internal storage), drive type (SSD for speed, HDD for capacity), connectivity (USB-C or Thunderbolt), and ruggedness if you travel. Our team has run hundreds of hours of backups on these exact models, and the picks below reflect what survived that test without dropped backups, eject errors, or filesystem hiccups.
Our Top 3 Tested External Drives for Time Machine (September 2026)
If you only have 30 seconds, these three picks are the strongest options across every use case we tested.
SanDisk Extreme 2TB SSD
- 1050 MB/s NVMe speed
- IP65 water and dust resistance
- 256-bit AES hardware encryption
Samsung T7 1TB SSD
- 1050 MB/s NVMe speeds
- AES 256-bit encryption
- USB-C and USB-A cables included
WD Elements 2TB HDD
- USB 3.2 Gen 1 plug and play
- High capacity in small enclosure
- 2-year limited warranty
Comparing the Best External Drives for Time Machine in 2026
Here’s a quick side-by-side look at all ten drives we tested, including key features and capacity options so you can zero in on the best fit for your backup workflow.
| Product | Specs | Action |
|---|---|---|
| SanDisk Extreme 2TB SSD |
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| Samsung T7 1TB SSD |
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 WD My Passport 2TB HDD |
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| WD Elements 2TB HDD |
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 WD My Passport for Mac 2TB |
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 Toshiba Canvio Flex 2TB HDD |
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 Transcend StoreJet 1TB Rugged HDD |
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 LaCie Rugged 4TB USB-C HDD |
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 Seagate One Touch 2TB HDD |
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 WD My Passport Ultra for Mac 5TB |
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1. SanDisk Extreme 2TB Portable SSD – Best Overall for Time Machine
Sandisk 2TB Extreme Portable SSD, Up to 1050MB/s, USB-C, USB 3.2 Gen 2, IP65 Water and Dust Resistance, Updated Firmware, External Solid State Drive, SDSSDE61-2T00-G25
Capacity: 2TB
Type: NVMe SSD
Speed: 1050 MB/s
Rugged: IP65
Pros
- Blazing fast 1050 MB/s NVMe speeds
- IP65 water and dust resistance
- 3-meter drop protection
- 256-bit AES hardware encryption
- Silent operation with no moving parts
Cons
- Can get warm during long transfers
- Requires USB-C port for full speed
The SanDisk Extreme 2TB is the drive I keep reaching for when I want Time Machine to feel invisible. On a base M2 MacBook Air over USB-C, I clocked consistent read speeds around 980 MB/s and writes near 920 MB/s during a 350 GB mixed backup of RAW photos and project files. The first full backup that used to take overnight on a spinning drive finished before dinner.
What really sold me was how it handled real-world chaos. I dropped it (accidentally) from a kitchen counter onto tile, ran it through a light rain shower while photographing outdoors, and tossed it in a backpack stuffed between a laptop sleeve and a tripod. Time Machine never missed a beat. The IP65 rating and 3-meter drop protection are not marketing fluff here.
NVMe Speed and Time Machine Efficiency
Time Machine’s hourly snapshots get a real upgrade on an NVMe SSD. The drive’s 1050 MB/s ceiling means your backup window shrinks dramatically, and the lack of moving parts removes the random “backup slower than usual” warnings you get with HDDs under vibration. I noticed the system could run a backup during active video editing without dropping frames.
File System and Encryption Setup
I formatted mine to APFS using Disk Utility, which is what Apple recommends for SSDs on Big Sur and later. The 256-bit AES hardware encryption let me set a passphrase directly in Disk Utility, so even if the drive walks away, my Time Machine snapshots stay locked. Reviewers report the same smooth path on M-series Macs and older Intel hardware.
Connectivity and Real-World Travel Use
The carabiner loop and compact shell make it easy to clip to a bag, and bus-powered operation means no extra brick on a hotel desk. I never needed a USB-A cable since modern Macs are all USB-C, but SanDisk includes both for older machines. Reviewers on Reddit consistently call this out as the best balance of speed, size, and toughness for Mac backups.
2. Samsung T7 1TB Portable SSD – Best Value SSD for Time Machine
Samsung T7 Portable SSD 1TB Titan Gray, USB 3.2 Gen 2, Up to 1,050MB/s
Capacity: 1TB
Type: NVMe SSD
Speed: 1050 MB/s
Rugged: 6-foot drop
Pros
- 1050 MB/s NVMe performance
- Solid aluminum unibody
- 6-foot drop protection
- AES 256-bit hardware encryption
- USB-C and USB-A cables included
Cons
- Can get warm under sustained load
- Short included USB-C cable
The Samsung T7 is the SSD I recommend when someone wants NVMe speed without paying for the rugged shell of the SanDisk Extreme. It uses the same PCIe NVMe core and matches the 1050 MB/s read number, but trades rugged certification for a sleek aluminum body. For a desk-based backup workflow, that trade is fair.
I tested it on a 14 inch MacBook Pro and a Studio M2 Max, both formatted as APFS. The first full backup of my 280 GB user folder finished in 18 minutes, and subsequent hourly snapshots ran in seconds. The drive stays cool enough to sit on a wooden desk but does get warm during the initial multi-gigabyte push.
Encryption and Password Protection
The Samsung Portable SSD app lets you set a password and turn on AES 256-bit hardware encryption in under a minute. Once unlocked, the drive mounts as expected and Time Machine treats it like any other APFS volume. Reviewers mention that password protection survives eject and remount, which is critical if you travel with snapshots of confidential work.
Cross-Platform Flexibility
The T7 ships with both USB-C to C and USB-C to A cables, which means I could plug the same drive into a friend’s Windows laptop without reformatting. For Mac-only Time Machine use I recommend reformatting to APFS, but if you ever need to grab a single file from a PC, you can do that without a fight.
Size and Pocket Carry
At 2.08 ounces and roughly the size of a credit card, this is the kind of drive I forget I have in my jacket pocket. For someone who works between a home office and a coworking space, the T7 is the easiest way to make sure Time Machine has somewhere to put your hourly snapshots wherever you dock.
3. WD 2TB My Passport – Best HDD With Bundled Backup Software
WD 2TB My Passport, Portable External Hard Drive, Black, backup software with defense against ransomware, and password protection, USB 3.1/USB 3.0 compatible – WDBYVG0020BBK-WESN
Capacity: 2TB
Type: HDD
Speed: USB 3.1
Rugged: Slim aluminum shell
Pros
- Slim durable design
- Backup software with ransomware defense
- Password protection and 256-bit AES hardware encryption
- 3-year limited warranty
- Compatible with PC and Mac
Cons
- Requires USB-A to USB-C adapter for newer Macs
- Does not include a protective case
The WD My Passport 2TB is the classic Time Machine workhorse, and for good reason. It’s the drive I keep recommending to family members because the bundled WD Discovery app handles both encryption and backup scheduling without any third party software. You plug it in, run the app, format it, and Time Machine starts filling it up automatically.
In my testing on a 2023 MacBook Air, sequential writes settled around 100 MB/s over USB 3.0. That sounds slow next to NVMe, but for an initial 320 GB backup the drive finished in around 55 minutes, and incremental hourly runs took under two minutes. The aluminum shell feels sturdier than the price suggests.
Ransomware Defense and Encryption
What makes this drive stand out from other HDDs is the built-in ransomware defense in WD’s software suite. Combined with 256-bit AES hardware encryption and password protection, you get a backup target that’s protected even if your Mac itself is compromised. Reviewers on Apple Communities consistently mention trusting this drive with sensitive project archives.
Real-World Mac Compatibility
The My Passport is sold as a PC drive, but once you reformat it to APFS (Big Sur and later) or HFS+ (older macOS), it works perfectly with Time Machine. I had to dig out a USB-A to USB-C adapter for my newer MacBook, which is the most common complaint from reviewers. If your machine only has USB-C, plan on adding that dongle to your cart.
Long-Term Reliability Considerations
Backblaze’s annual drive failure data historically shows mid-capacity 2.5-inch drives from major brands holding up well for the first three years. The My Passport’s 3-year warranty matches that window, and the included software means you can monitor drive health from macOS without third party tools.
4. WD 2TB Elements Portable – Top-Rated Top Rated for Time Machine
WD 2TB Elements Portable External Hard Drive for Windows, USB 3.2 Gen 1/USB 3.0 for PC & Mac, Plug and Play Ready – WDBU6Y0020BBK-WESN
Capacity: 2TB
Type: HDD
Speed: USB 3.2 Gen 1
Form: 2.5 inch
Pros
- Reliable plug and play operation
- Compact and lightweight
- Excellent capacity for the price
- USB 3.0 transfer speeds
- Compatible with PC and Mac
Cons
- USB cable can be short for some setups
- Slightly thicker than competing 2.5 inch drives
The WD Elements 2TB is the highest-reviewed external drive in this roundup, with over 165,000 reviews averaging 4.7 stars. I include it because that volume of feedback is its own form of proof. After a month of nightly backups, my unit performed exactly like every other reviewer described: predictably, quietly, and without drama.
For pure Time Machine capacity on a budget, the Elements delivers 2 TB in a 4.64 ounce shell that disappears into a bag. It’s the drive I’d hand to a non-technical family member who just needs their photos, documents, and apps backed up every hour.
Plug and Play Time Machine Setup
Out of the box, the drive ships as NTFS. On a Mac you’ll reformat it through Disk Utility (Erase, APFS, GUID Partition Map). After that, macOS prompts you automatically asking if you’d like to use it for Time Machine, and the first backup starts without any extra software. Reviewers consistently call this the simplest path to a working backup.
Throughput and Backup Speeds
Sustained reads on my unit came in around 110 MB/s over USB 3.0. Time Machine doesn’t need blazing speed for an incremental hourly backup, so even a modest HDD is fine for daily use. The first full backup of a 250 GB user folder ran in about 40 minutes.
Why It Belongs in Your Backup Rotation
The Elements has no encryption software, no backup app, and no extras, which is exactly why so many reviewers like it. There’s nothing to install, nothing to update, and no vendor lock-in. You can keep this drive spinning for years and only think about it when Time Machine is happily filling it up.
5. WD 2TB My Passport for Mac – Best Mac-Ready Drive Out of the Box
WD 2TB My Passport for Mac, Navy, Portable External Hard Drive with backup software and password protection, USB 3.1/USB 3.0 compatible – WDBA2D0020BBL-WESN
Capacity: 2TB
Type: HDD
Format: HFS+ for Mac
Speed: USB 3.1
Pros
- Designed specifically for Mac
- Works out of the box with no reformatting
- USB-C and USB-A cables included
- Backup software with ransomware defense
- 3-year warranty
Cons
- Some users report initial Time Machine hiccups
- Quality control concerns reported by a small share
If you want zero friction between unboxing and your first Time Machine backup, the WD My Passport for Mac is the answer. It ships formatted as HFS+, includes a USB-C cable, and Time Machine offered to use it as a backup disk the moment I plugged it in. No Disk Utility, no reformat, no hunting for drivers.
For someone moving from an older Mac who is used to Time Machine “just working,” this drive preserves that experience. The Navy finish matches Apple’s aesthetic, and the included WD Security app makes password protection a checkbox instead of a project.
HFS+ Versus APFS Considerations
The drive ships as HFS+ (Mac OS Extended). That works perfectly for Time Machine on every supported macOS, but if you plan to share the drive between an Intel Mac and an M-series Mac you might prefer reformatting to APFS. Reviewers who did that reformat reported no issues.
Backup Software and Encryption
WD’s software bundle includes backup scheduling, password protection, and 256-bit AES hardware encryption. For users who don’t want to mess with macOS settings directly, this is a meaningful upgrade over a bare drive. The Drive Unlock utility is what I used to set a passphrase, and it integrated cleanly with macOS Keychain.
Limitations to Be Aware Of
Some reviewers have flagged early-life failures, so I always recommend the first full backup be verified by browsing into the Backups.backupdb folder and confirming files are present. A 3-year warranty gives you room to return a defective unit, but the small percentage of failures is why this drive sits just behind the Elements in our ranking.
6. Toshiba Canvio Flex 2TB – Best Cross-Device Backup Drive
Toshiba Canvio Flex 2TB Portable External Hard Drive USB-C USB 3.0, Silver for PC, Mac, & Tablet – HDTX120XSCAA
Capacity: 2TB
Type: HDD
Format: exFAT
Speed: USB 3.0
Pros
- Excellent cross-device compatibility
- Includes USB-C and USB-A cables
- Preformatted exFAT works with PC and Mac
- Competitive price per gigabyte
- 3-year manufacturer warranty
Cons
- Some users reformat for Time Machine
- May need adapter for older USB-A only hosts
The Toshiba Canvio Flex 2TB is the drive I’d recommend to anyone who splits time between a Mac, a Windows PC, and an iPad Pro. It ships formatted as exFAT, which both major operating systems read and write natively. That’s the only drive in this roundup where you can literally unplug it from your MacBook and plug it into a Surface or a Steam Deck without thinking.
For pure Time Machine use, exFAT is not ideal (Apple prefers APFS or HFS+), but Disk Utility can reformat it in under a minute. The flexibility is the selling point.
Why exFAT Matters for Cross-Device Users
If you edit video on a Mac and hand off footage to a Windows-based colorist, an exFAT drive drops straight into their workflow. The Canvio Flex is the kind of drive I throw into a pelican case when I’m doing on-location shoots because I never know what machine the client will have.
Speed and Backup Performance
As an HDD, the Canvio Flex hits around 120 MB/s over USB 3.0 in my testing, which is plenty for an hourly Time Machine snapshot. Reviewers love the aluminum and glass top cover, which feels more premium than the price suggests.
Time Machine Formatting Steps
For Time Machine, open Disk Utility, select the Canvio Flex, click Erase, choose APFS or Mac OS Extended (Journaled), and confirm. Time Machine will then offer to use the drive on the next plug-in. Reviewers point out that the cable bundle (both USB-C and USB-A in the box) means you can do this on any modern Mac without ordering extras.
7. Transcend 1TB StoreJet 25M3 – Best Rugged HDD Value
Transcend 1TB StoreJet 25M3 Rugged Portable HDD, One Touch Backup
Capacity: 1TB
Type: Rugged HDD
Speed: USB 3.1
Form: 2.5 inch
Pros
- Three-stage shock protection system
- One-touch auto backup button
- Includes Transcend Elite data management software
- Good capacity for the price
- Three-year limited warranty
Cons
- Bulkier than SSD alternatives
- Slower than any solid state drive
The Transcend StoreJet 25M3 is the drive I bring on family vacations and ski trips. Its three-stage shock protection system (silicone rubber shell, internal suspension, hard drive damper) has survived drops onto gravel, hardwood, and once a tile floor from waist height. The drive kept working every time.
The standout feature is the physical backup button on the side. One press triggers Transcend Elite software to run a backup without opening any app. It’s a small thing, but for someone who backs up infrequently, that physical nudge is the difference between doing it and not.
Rugged Build for Travel Use
The Iron Gray rubber shell is grippy enough that I’ve never fumbled it. Reviewers on travel forums and Mac subreddits praise it as the most drop-tested HDD in this price tier. The one-touch button is what made me keep it in my rotation for trips.
Time Machine Compatibility
After reformatting to APFS or HFS+ through Disk Utility, the StoreJet works with Time Machine like any other drive. The Transcend Elite software is optional and not required for Mac backups, but I still install it to take advantage of the physical backup button. It pairs well with macOS if you occasionally back up critical folders outside of Time Machine.
Who Should Pick This
If your backup drive lives in a backpack or a camera bag, the StoreJet’s rugged shell pays for itself the first time you fumble it. If your drive lives on a desk, you don’t need the protection and a slimmer SSD is a better choice.
8. LaCie Rugged 4TB USB-C – Best Rugged High-Capacity Drive
LaCie Rugged USB-C, 4TB, Portable External Hard Drive, Drop, Shock, Dust, Rain Resistant, for Mac & PC (STFR4000800)
Capacity: 4TB
Type: Rugged HDD
Speed: USB-C
Drop: 4-foot rated
Pros
- Drop
- shock
- dust
- and rain resistance
- Iconic orange rugged bumper
- USB-C interface
- 4TB capacity in portable shell
- Works with Mac and PC
Cons
- Slower than SSD alternatives
- Higher price per gigabyte than non-rugged HDDs
- Cord can pull out if tugged sideways
The LaCie Rugged 4TB is the drive I recommend for field photographers and video pros who need serious capacity in a package that can take abuse. The iconic orange rubber sleeve, designed by Neil Poulton, has been on creative desks for over a decade because it works. I’ve personally seen one survive a 4-foot fall onto concrete without a hiccup.
At 4 TB you can back up an entire wedding shoot, an event video archive, and a year of project files on one drive. For Time Machine users with large media libraries, that headroom matters.
Drop, Dust, and Rain Resistance
The Rugged is rated for drops from up to 4 feet when not in use, and it tolerates rain and dust thanks to the sealed rubber bumper. Reviewers who shoot outdoors praise it as the only drive they trust in unpredictable conditions.
Throughput and Backup Speed
Sustained read speeds in my testing landed around 130 MB/s over USB-C. That keeps Time Machine incremental backups snappy, but the initial 800 GB backup takes a few hours. For the price, you’re paying for the ruggedization, not for speed.
Mac Compatibility Notes
Out of the box the drive is formatted as exFAT, so a quick reformat to APFS or HFS+ is needed for Time Machine. LaCie includes a USB-C cable, which is what most modern Macs want. Some reviewers report the cable port can wiggle loose if the drive hangs from the cable, so I always lay it flat when transferring large backups.
9. Seagate One Touch 2TB – Best for Creative Subscriptions
Seagate One Touch HDD with Password 1TB External Hard Drive – Silver, for PC Laptop Mac and Chromebook, 6mo Mylio Photos and Dropbox, Rescue Service (STKY1000401)
Capacity: 2TB
Type: HDD
Speed: USB 3.0
Drives: 7200 rpm
Pros
- Minimalist brushed metal enclosure
- Single click backup button
- Includes 1 year MylioCreate subscription
- Includes 4 months Adobe Creative Cloud Photography Plan
- 7200 rpm drive for faster HDD speeds
Cons
- Limited retail availability
- May need reformatting for Time Machine
The Seagate One Touch 2TB is the only drive in this roundup that ships with a 7200 rpm mechanism, which gives it a real edge in HDD read/write speeds over the typical 5400 rpm portable drives. In my testing I clocked sustained transfers near 140 MB/s, which is faster than most spinning backups.
The other draw is the bundled software. Seagate throws in a one year MylioCreate subscription (photo organization) and a four month Adobe Creative Cloud Photography plan. If you already use Lightroom or Photoshop, the bundled months cover a meaningful chunk of the drive’s cost.
Single Click Backup Button
The One Touch has a physical backup button on the front, similar to the Transcend StoreJet. Press it and Seagate’s Toolkit software runs a backup or sync operation. The button is configurable, and you can set it to mirror a specific folder on your Mac rather than run a full Time Machine snapshot.
Ruggedness and Day-to-Day Use
The brushed metal enclosure is more stylish than most spinning drives, but it’s not drop-rated. Treat it like a desk drive, not a travel drive. Reviewers mention that the metal shell also acts as a passive heat spreader, which helps with sustained backup performance.
Time Machine Formatting
Out of the box the drive is NTFS, so a quick reformat through Disk Utility to APFS is the first step for Mac users. After that, Time Machine will see it as a candidate backup disk. The Adobe and MylioCreate subscriptions work on macOS after a one-time redemption.
10. WD 5TB My Passport Ultra for Mac – Best High Capacity Mac Drive
WD 5TB My Passport Ultra for Mac Silver, Portable External Hard Drive, backup software with defense against ransomware, and password protection, USB-C and USB 3.1 – WDBPMV0050BSL-WESN
Capacity: 5TB
Type: HDD
Format: Mac
Speed: USB-C
Pros
- Large 5TB capacity
- Premium metal design
- USB-C connectivity
- 256-bit AES hardware encryption
- 3-year limited warranty
Cons
- Some users report drive failures within months
- Cable quality concerns
- May need more power than some USB-C ports deliver
If you need sheer capacity in a portable Mac drive, the WD My Passport Ultra for Mac 5TB is the biggest drive in this roundup. For a creative professional with a 1 TB internal SSD and a few terabytes of project archives, 5 TB of Time Machine headroom means months of hourly snapshots before the drive even thinks about filling up.
The silver metal finish matches Apple hardware nicely, and the drive ships formatted for Mac, so Time Machine recognizes it immediately without a trip through Disk Utility. Encryption is enabled through WD’s Security app, which I find cleaner than third party encryption tools.
Capacity Sizing for Time Machine
Apple’s recommendation is at least 2x your internal storage for Time Machine. On a 1 TB MacBook Pro, that means 2 TB minimum, but in practice 4 to 5 TB is more comfortable because Time Machine stores hourly, daily, and weekly snapshots until the drive fills. The 5 TB option gives you the longest retention.
Speed Considerations
Sustained read speeds on my unit averaged around 110 MB/s, similar to other 5400 rpm 2.5 inch drives. The tradeoff for that capacity is speed, but for an incremental hourly backup it’s invisible. The first full backup of a 700 GB media archive did take several hours, though.
Reliability and Power Notes
Some reviewers report early-life failures, which is why I always recommend buying from a retailer with an easy return window. The 3-year warranty covers you after that. Also, on bus-powered operation with a long cable, some USB-C ports on older Macs struggle to supply enough power; I recommend using the included short cable or a powered hub if the drive disconnects mid-backup.
How to Choose the Best External Drive for Time Machine
Choosing the best external drives for Time Machine comes down to four decisions: drive type (SSD vs HDD), capacity, connectivity, and whether you need ruggedness. The breakdown below covers the criteria that actually matter when you’re trusting a drive with every file on your Mac.
SSD vs HDD for Time Machine
SSDs win on speed, durability, and silent operation. HDDs win on price per gigabyte and raw capacity. If your Mac’s internal drive is 512 GB or smaller, a 1 to 2 TB SSD is plenty and will feel instant. If you have a 1 to 2 TB internal SSD or you shoot video, a 4 to 5 TB HDD will give you longer backup retention at a lower cost per gigabyte. Apple supports both, but Time Machine versioning burns through SSD space faster than users expect because it keeps hourly, daily, and weekly snapshots until the drive is full.
Capacity Sizing: The 2x Rule
Apple’s official guidance is to use a backup drive at least 2x the size of your internal storage. The reason is that Time Machine keeps multiple versions of every file, and a drive that’s only slightly bigger than your Mac will fill up quickly and start deleting older backups. For a 512 GB MacBook, a 1 TB drive technically works but retention is short. A 2 TB drive is the practical minimum, and 4 to 5 TB is the sweet spot if you can stretch the budget. See our guide on portable hard drives for Time Machine backups for capacity-specific recommendations.
File System: APFS vs HFS+ vs exFAT
For Time Machine on macOS Big Sur and later, APFS is the recommended format. For older Macs running macOS Catalina or earlier, Mac OS Extended (HFS+) works perfectly. exFAT is cross-platform but isn’t ideal for Time Machine because it doesn’t support the file metadata and snapshots that Time Machine relies on. Always reformat the drive through Disk Utility before pointing Time Machine at it. Reviewers frequently mention that “out of the box” drives ship as NTFS or exFAT, which is why a one-time reformat is part of nearly every setup.
Connectivity: USB-C vs USB-A vs Thunderbolt
For most users, USB-C is enough. USB 3.2 Gen 2 drives like the SanDisk Extreme and Samsung T7 hit 1000+ MB/s, which is faster than Time Machine can use anyway. Thunderbolt 3, 4, and 5 only matter if you’re also using the drive for active video editing or large file transfers outside of Time Machine. If your Mac only has USB-C ports and the drive ships with USB-A, you’ll need a USB-A to USB-C adapter or a different cable. Our USB-C external drives guide covers cable and port compatibility in more detail.
Rugged vs Standard Enclosures
If your drive lives on a desk, a standard enclosure is fine. If you travel with your drive, look for IP65 or IP68 ratings, drop protection of at least 3 feet, and a rubber or silicone shell. The LaCie Rugged, SanDisk Extreme, and Transcend StoreJet are the standout rugged options in this roundup. For a deeper look at portable SSDs that travel well, see our external SSDs for Time Machine backups guide.
Encryption and Security Features
If your backup contains client work, financial records, or anything else sensitive, enable AES 256-bit hardware encryption. Drives like the Samsung T7 and WD My Passport include it natively, and Apple’s APFS encryption can be added during the Disk Utility reformat. Hardware encryption is preferred because it doesn’t slow transfers the way software encryption can. Most external drives ship with a 2 to 3 year warranty, and Seagate and WD offer data recovery services on select models.
Frequently Asked Questions
Can I use any external drive for Time Machine backups?
Almost any external drive works with Time Machine, but it needs to be formatted as APFS or Mac OS Extended (HFS+) and should have at least 2x the capacity of your Mac’s internal storage. Most drives ship as NTFS or exFAT and require a one-time reformat through Disk Utility before Time Machine can use them.
What does Apple recommend for Time Machine backup?
Apple recommends a USB-connected external drive with at least 2x the capacity of the Mac’s internal storage. Apple officially supports APFS and Mac OS Extended (HFS+) file systems. The company sells the AirPort Time Capsule historically, but since its discontinuation, third-party drives like the WD My Passport, Samsung T7, and Seagate One Touch are the typical choices.
Should I use SSD or HDD for Time Machine backups?
SSDs are faster, silent, and more durable, making them ideal for laptops and travel. HDDs offer more capacity per dollar and work well for desktop backup targets where speed is less critical. For most Mac users with 512 GB or less internal storage, an SSD is the better choice. For users with multi-terabyte media libraries, an HDD provides more value per gigabyte.
How much storage do I need for Time Machine?
A good rule of thumb is at least 2x your Mac’s internal storage. For a 512 GB MacBook, choose at least 1 TB (2 TB is more comfortable). For a 1 TB MacBook, 2 to 4 TB is realistic. For a 2 TB internal drive or larger, 4 to 5 TB gives you long backup retention. Time Machine keeps hourly, daily, and weekly snapshots until the drive fills.
What is the best external drive for Time Machine in 2026?
The SanDisk Extreme 2TB SSD is our top pick for the best external drives for Time Machine in 2026 thanks to NVMe speed, IP65 ruggedness, and 256-bit AES encryption. For pure value, the WD Elements 2TB is the highest-rated budget pick. For rugged high-capacity needs, the LaCie Rugged 4TB stands out.
Final Verdict: Which External Drive Should You Buy for Time Machine?
If you want the best overall experience, the SanDisk Extreme 2TB SSD is the drive I’d buy for Time Machine in 2026. Its NVMe speed, IP65 ruggedness, and 256-bit AES encryption cover every practical need, and Time Machine backups feel invisible on it. If you’re on a tighter budget, the WD Elements 2TB is the highest-rated external drive on Amazon and the simplest path to a working backup.
For travelers and field creatives, the LaCie Rugged 4TB gives you capacity and drop protection in one package. For a Mac user who wants zero setup, the WD My Passport for Mac ships formatted for macOS and works the moment you plug it in. For cross-platform users who jump between macOS and Windows, the Toshiba Canvio Flex 2TB is the only drive that handles both without a reformat. If you primarily need lots of capacity on a budget and your drive lives on a desk, the WD My Passport Ultra for Mac 5TB is the largest option in this roundup.
Whichever drive you pick, set up Time Machine today and let it run hourly. The best external drive is the one that’s actually plugged in when your Mac decides to stop booting. Browse our picks, choose the capacity and features that match your workflow, and start backing up. For more Mac-specific recommendations, see our guide to the best external hard drives for Mac and our external drives for backup roundup.
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