Block suballocation

Allows parts of several files to share one disk block, better utilizing disk space.

Block suballocation divides any partially used disk block into 512-byte suballocation blocks. These suballocation blocks are used to share the remainder on the block with leftover fragments of other files.

Example: Your default block size is 64 KB, and you create a 65KB file.

Without block suballocation, the 65KB file requires two disk blocks, or 128 KB.
With block suballocation, you use one disk block (64 KB) plus two 512-byte suballocation blocks. The remaining 63 KB of the second block can still be used by other files.

Block suballocation is set by default when NetWare 4 is installed.