Within a single SpiderOak One Backup account, you may install the application on as many computers as you like, backing up as much or as little data as you need. We also support selecting external hard drives, removable devices, and in some cases network volumes for backup.
Our goal is to provide a central place to safely and securely back up and store all your data, regardless of what computer, hardware, or operating system it exists on.
To make our pricing more competitive, SpiderOak One Backup does intense compression and de-duplication within a backup set, even across multiple computers. Whenever new data is stored, SpiderOak One tries to store it in terms of references to existing data blocks. One is therefore able to retain all previous versions of files using very little extra space. Any duplicated data between however many computers you back up does not take any extra space. We have customers who have stored hundreds of gigabytes of user data within a 100 GB SpiderOak One account.