DigitalOcean Block Storage is a flexible, convenient way of managing additional storage for your Droplets.
Block Storage is provisioned in units called volumes. Volumes function as generic block devices, so you can treat attached volumes like locally connected storage drives. This lets you you partition, format, and manage volumes with familiar tools and techniques.
Volumes are an independent resource that can be moved from one Droplet to another within the same region, and you can increase the size of a volume without powering down the Droplet it’s attached to. They’re most useful when you need more storage space but don’t need the additional processing power or memory that a larger Droplet would provide, like:
High-level information, like plans and pricing, availability, feature overviews, and known issues.
Just the essentials to go from zero to working in a few minutes.
How to accomplish specific tasks in detail, like creation/deletion, configuration, and management.
Resources on native tools for working with volumes.