Convert Block (block) to DVD (1 layer, 2 side) (DVD (1L, 2S)) instantly.
About these units
Block (block)
A block is a unit of data storage used by file systems, typically ranging from 512 bytes to 4096 bytes, though advanced systems may use even larger sizes (8 KB, 16 KB, etc.). Blocks form the fundamental allocation unit for disk storage—files occupy blocks on disk, and file systems track which blocks belong to which files. Block size has significant performance implications. Larger blocks improve read/write throughput but may waste space for small files (internal fragmentation). Smaller blocks offer precision but reduce I/O efficiency. Many classic file systems (FAT, ext2), modern ones (ext4, NTFS), and network storage systems (ZFS, Btrfs, distributed file systems) all rely on block-based allocation. Blocks bridge the gap between raw physical storage and abstract file structures.
DVD (1 layer, 2 side) (DVD (1L, 2S))
A single-layer, double-sided DVD offers 9.4 GB, with 4.7 GB per side, requiring the user to physically flip the disc. Double-sided DVDs were ideal in early DVD-era box sets and archival applications, but their inconvenience—no label side, no artwork, and manual flipping—limited consumer adoption. They represent a transitional form of optical media designed to increase capacity before dual-layer technologies became mainstream.