Disk Management
[File System](https://texonom.com/file-system-7a340052fcaf48169a5c6da2610aa5cf) 


### Need
- Ram and disk price difference is still 10^2
- Memory is volatile
- Disks as swap space for virtual memory system
### Disk Management Notion
|Title|
|:-:|
|[Disk layout](https://texonom.com/disk-layout-5091a147a01a4ff2986c9d80e6aad326)|
|[Disk Allocation methods](https://texonom.com/disk-allocation-methods-4a49727bed65460cb4db6426038b97b4)|
|[Disk caching](https://texonom.com/disk-caching-f0d66b9112c24fbd9b6bb7f115da6af0)|
|[Anatomy of hard-disk](https://texonom.com/anatomy-of-hard-disk-e4eca2717d6145a189df99f477adf720)|
|[Disk Head Scheduling](https://texonom.com/disk-head-scheduling-e6e60cca761147059a1bf7717616c398)|
|[Disk management](https://texonom.com/disk-management-2db57b8f7837407088208b308e51bbec)|
|[RAID](https://texonom.com/raid-4b50ffdd255d430ca76f393e8d1ebe25)|
|[Tertiary storage devices](https://texonom.com/tertiary-storage-devices-def6411e9adf4220811b65706895e6e3)|
|[Disk Performance](https://texonom.com/disk-performance-28e569d80cbe4c3b9e68857ac92550ea)|




> primary - secondary  - tertiary





