Added requirements to README

[dsmonrot.git] / README.md

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 # DSMonRot
 
-DSMonRot is a script for rotating Drive Snapshot backups monthly (DSMonRot stands for **D**rive **S**napshot **Mon**thly **Rot**ate).
+DSMonRot is a script for rotating [Drive Snapshot](http://www.drivesnapshot.de/) backups monthly (DSMonRot stands for **D**rive **S**napshot **Mon**thly **Rot**ate).
 
 It's main purpose is to create a full backup at the beginning and then create differential backups for the rest of the month. Furthermore it rotates the backups after every successful full backup allowing you to keep only a certain amount of monthly backup sets. DSMonRot creates monthly log files allowing you to check for success or errors.
 
+## Requirements
+
+* PowerShell 4.0
+* [Drive Snapshot](http://www.drivesnapshot.de/) (tested with version 1.45)
+
 ## Basic installation
 
 1. Copy *dsmonrot.ps1* to arbitrary directory (for example *C:\DSMonRot*). You should also sign this script file or set PowerShell execution policy to *Unrestricted*.