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Understanding Docker Storage Drivers: Choosing the Right Driver for Your Containers
- Docker uses storage drivers to manage the filesystem for containers and their layers.
- Types of Docker storage drivers include overlay2, aufs, btrfs, devicemapper, zfs, and vfs.
- The overlay2 storage driver is the recommended driver for most Linux distributions and the default for Docker.
- The aufs driver was the first storage driver used by Docker and is still available for backward compatibility.
- The btrfs driver is a modern filesystem designed to support advanced features such as snapshots, compression, and volume management.
- The devicemapper driver uses a block-level device for each container.
- The zfs driver provides high-performance filesystem and volume management with advanced features like snapshots, compression, and deduplication.
- The vfs storage driver is the most basic driver and is not recommended for production environments.
- The overlay2 driver is generally recommended for most users, but advanced use cases might benefit from btrfs, zfs, or devicemapper.
- Users can configure the storage driver used by Docker at startup using the --storage-driver option in the Docker daemon configuration file.
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