---
title: "contiguous allocation"
type: concept
related: [Contiguous Allocation]
source: https://www.jemoka.com/posts/kbhcontiguous_allocation/
confidence: high
status: active
---

Used: IBM/OS360
contiguous allocation puts the files and metadata together, and implements a Explicit Free List Allocator across the file.
benefits simple problems external fragmentation: little pockets of data is everywhere editing: hard to grow files
