Using WHM you can easily manage all your customer Domain Accounts :
You can easily configure all your hosting accounts can edit them, you can set limit for diskspace bandwidth for each account, can automatically suspend accounts which are exceeding their allotted bandwidth limit, can upgrade-downgrade hosting accounts etc.

Backups and Transfers :
You can set automated backup for all your customers accounts, easily transfer domains between servers, can limit features your reseller can use.

Getting Server Information :
Just by few clicks you can get all details about your account such as diskspace and bandwidth usage, CPU, Memory usage, can easily view service status of different applications as Apache, BIND, SQL etc..

Regarding Security issues :
WHM offers you many features for managing security issues for your account. You can view all running process and can also kill few which are loading your server, you can set limit for Apache Memory Usage, can set virus scanning, can Prevent Shell Users from Hogging Memory etc…

Manage your Server’s Functionality :
Uing WHM you can restart most important services such as Apache, FTP, SSH which are useful services, you can also easily update server and other system softwares, can upgrade Apache, cPanel etc… can manage IP addresses for your server, can easily add addon modules and scripts as per your requirements.

Thus WHM will make your life easy for managing your server efficiently.

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