User's Manual

Table of Contents
Chapter 1: Before You Start
Package Contents 3
Synology RS1221+ at a Glance 4
System Modes and LED Indicators 6
Other LED Indicators 8
Hardware Specication 9
Spare Parts 10
Optional Accessories 10
Safety Instructions 11
Chapter 2: Hardware Setup
Tools and Parts for Component Installation 12
Install Drives 12
Install Memory Modules 14
Install a PCle Add-in Card 17
Mount the Synology NAS to a 2-Post Rack 18
Start up Your Synology NAS 19
Chapter 3: System Maintenance
Replace System Fan 20
Chapter 4: Install DSM on Synology NAS
Install DSM with Web Assistant 22
Learn More 22
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