DropBox Storage

Data Redundancy

Dropbox Business uses Amazon Availability Zones for redundancy which can have 3 copies of user data for redundancy, although still not as good as Infinite Disk redundancy.

Dropbox's major redundancy problem is it metadata being store in ONE site.

Data Lost when that ONE site goes down.

A Infinite Disk site is a computing location that has independent power, cooling, networking, security and ownership.

Infinite Disk uses "parity" instead of "copies" for data protection across SEVEN sites.

  • Single Storage - SEVEN sites (3 parities - 75% redundant data)
    Data Lost if FOUR sites gone

Infinite Disk needs less redundant data yet allows more sites to fail.

Dropbox Reference:
Shared_Responsibility_Guide.pdf (409.8 KB)