In this tutorial, I'm going to talk you through turning your Raspberry Pi into a NAS server to hook up a hard drive, and access it over your local network.
Turn any hard drive into networked storage with Raspberry Pi - CNET
How to Turn a Raspberry Pi Into a NAS for Whole-Home File Sharing
NAS Using Raspberry Pi for Your Home Network : 4 Steps (with Pictures) - Instructables
Turn a Raspberry Pi into a NAS (Network Attached Storage) Server
How to make a Raspberry Pi NAS - A NAS-Berry that Runs Open Media Vault - Tutorial Australia
Building the fastest Raspberry Pi NAS, with SATA RAID
How to use your Raspberry Pi as a NAS box - The Pi
How to make a Raspberry Pi NAS - A NAS-Berry that Runs Open Media Vault - Tutorial Australia
How to build a Raspberry Pi NAS - Raspberry Pi
How to Turn a Raspberry Pi Into a NAS for Whole-Home File Sharing
How to make up DIY NAS on Raspberry Pi, Details
Waveshare Network Attached Storage(NAS) All-In-One Mini-Computer For Raspberry Pi Compute Module 4, Personal Network Storage Server : : Computers & Accessories
Build your own Network-Attached Storage (NAS) device using a Raspberry Pi - Dignited
Turn a Raspberry Pi into a Network Storage Device