Most of the servers in our data center run on CentOS. As Linux admins know, software raid (Raid-z, ZFS etc) in Linux has far surpassed hardware raid in terms of feature set, reliability, and functionality. However, several of our server admins prefer running CentOS and WHM inside virtual private servers (VPS) on a box running Windows Server because that’s the OS they are most comfortable with.
Varnish cache is a super caching application which will cache your website pages and images in RAM and deliver it directly to the visitors, thereby speeding up the web site.The major drawback of Varnish Cache is that you will not be able to run secure pages with Varnish Cache
Being a server admin, it is a vital responsibility to protect the servers from different types of attacks. The most common one among them is the brute force attacks, where the attacker tries to login to the server or email or any password protected area using trial and error method. The most common form of a brute force attack is a dictionary attack. A person who is trying to get access to one of your accounts (web server, ftp, e-mail, ssh, etc.) uses a uses a list of common names and password combination with the help of an automated script.
Desktop drives are significantly less expensive than NAS Drives or Enterprise. Can they be used when building a budget RAID array?
They can, however it’s important to understand how desktop drives will increase required maintenance, downtime, expense, and risk of data loss. The biggest difference between desktop drives vs NAS drives or Enterprise drives is in how they communicate with the RAID controller during write operations.