You can run powershell commands directly from the Sharepoint 2010 Management Shell window; but that does not suit the purpose when you require a daily backup

Start - All Programs - Sharepoint 2010 Management Shell

Its’ surprising why Sharepoint themselves could not come out with an easy automated tool. Nevertheless; the below post would guide you through

Firstly, we need to define a backup location.

• Is your Sharepoint Farm and SQL Server on different Servers? If yes, kindly ensure that the Backup Location that you define is a Share Drive (\\sharedrive\backupfolder) and has full Write Access for both the Sharefoint Farm Admin Account and SQL Server Account

Farm Backup is best done as both a Full and subsequent Incremental Backups

Full Backup

Create a File with the extension ps1 (denotes a powershell command file)

Add-PsSnapin Microsoft.SharePoint.Powershell
Backup-SPFarm -Directory \\sharedrive\backupfolder -BackupMethod Full

Setting up a Windows Task Schedule for the Farm Backup

Start – All Programs – Administrative Tools – Task Scheduler – Create Task

Give an appropriate name and under Actions tab; click New

Type powershell under Program field and state the ps1 file that you created above under the Add Arguments field

Specify an appropriate time under the Trigger tab for your task to run.  Since its a full backup its best to set a time after regular office hours

Incremental Backup (Daily backup of changed data since the last backup)

Create a File with the extension ps1 (denotes a powershell command file)

Add-PsSnapin Microsoft.SharePoint.Powershell Backup-SPFarm -Directory \\sharedrive\backupfolder -BackupMethod Differential

Use the Task Scheduler as illustrated earlier to define the daily backup