Every drive you own is in one house.

A second drive is a good backup until something happens to the house. Vault will keep an encrypted copy of your files away from home, in three Amazon data centres, for MountedStorage on Mac.

Vault is coming soon. It isn’t available yet. Leave your email and we’ll write once, when it is.

Another drive only gets you so far.

Pick any file. These are the chances of losing it in the next ten years. A second drive helps a lot. After that the odds barely change, because a fire, a flood or a break-in reaches every drive in the house.

1 drive19.8%about 1 in 5
2 drives2.37%about 1 in 42
3 drives1.69%about 1 in 59
4 drives1.64%about 1 in 61
5 drives1.64%about 1 in 61
1 drive + VaultLess than 1 in 10 billionabout 1 in 100 billion on Amazon’s design figure

Vault would keep your copy in one of Amazon’s US regions. Amazon has no reported loss from Glacier in the US since it launched in 2012.

How we worked this out
What reaches every drive in the houseIn ten yearsWith Vault
A break-in1.2%Your copy is safe
A fire0.25%Your copy is safe
A flood0.2%Your copy is safe
Together, however many drives you own1.6%Your copy is safe

At home. Best estimates for US households, for any one file: losing it means losing every copy of it. A drive at home fails about 2% of the time a year (1 to 4%); a backup drive on a shelf is unreadable about 2.5% of the time when you need it, and in 1 case in 10 a whole batch is bad; a break-in takes every drive 0.12% a year, a fire 0.025%, a flood 0.02%; lightning or a surge harms plugged-in drives 0.015%. With one drive those add up to 2.18% a year, which is 19.8% over ten years. Ranges over ten years: with one drive, 10% to 36%; with more, 0.6% to 6.7%. Sources: drive statistics, Q2 2026, BJS 2024, USFA, III.

With Vault. Amazon designs Glacier for 99.999999999% durability per file a year, across at least three data centres (AWS): a 1 in 100 billion chance a year of losing a given file. We assume a file Amazon loses is never noticed, so it’s gone if your drive at home fails at any point after that in the ten years, at 2.18% a year. Over ten years that comes to about 1 in 100 billion. The table says less than 1 in 10 billion, which leaves ten times the room in case Amazon falls short of its design figure.

That figure is Amazon’s design target, not a guarantee, and it doesn’t cover war or another disaster that destroys a whole Amazon region. Only files that have finished uploading are covered. Both sides leave out viruses and mistakes; the Vault side assumes MountedStorage keeps running and leaves out losing your account, a missed payment or your key.

Encrypted before it leaves your Mac.

Amazon keeps only what it can’t read. The key stays in your iCloud Keychain, so only your Apple devices can decrypt it.

Key recovery

If you lose every device, sign in to your Apple Account on a new Mac to get your key back. Setup also gives you a recovery page to print; keep it away from home, with a relative or at work, in case you ever lose the account too.

Version history

When a file changes, Vault keeps the earlier version too, so ransomware or a bad save can’t overwrite your copy.

Recently Removed

Anything you remove from Vault stays recoverable for 7 days.

Choose how much to protect.

Planned prices. Every plan has the same encryption and the same three data centres.

Over 16 TB, each extra TB is $1.50 a month. Restores aren’t free: they cost what Amazon charges to send files back, about $90 per TB, and are ready within 48 hours. Prices may change before launch. TB means 1,000 GB.

How long the first upload takes

Upload speed2 TB4 TB8 TB16 TB
20 Mbps9 days19 days37 days74 days
50 Mbps4 days7 days15 days30 days
100 Mbps2 days4 days7 days15 days
1 Gbps4 hours9 hours18 hours36 hours

At the full upload speed, day and night, with nothing else using the connection. Uploading only at night, or at a speed you set, takes longer. Home internet usually uploads much slower than it downloads, so check your upload speed. If your plan has a monthly data cap, the cap may set the pace instead: under a 1 TB cap, 8 TB takes at least eight months. Only files that have finished uploading are protected.

Questions, answered.

What counts toward my plan?

Everything in your vault, including earlier versions of files you’ve changed. MountedStorage tells you before you run out of room.

What if I miss a payment, or MountedStorage closes?

Miss a payment and nothing is touched for 60 days; pay, or download what you want first. After 60 days your vault is deleted. If MountedStorage ever closes, you get at least 90 days’ notice to download all of it, still readable with your own key.

Do I need it if I already have a backup drive?

A backup drive in the same house protects you from a drive that dies, not from what happens to the house. If you already keep an up-to-date copy somewhere else, like an office or a relative’s home, you may not need Vault.