Red Hat Enterprise Linux

Enterprise Linux operating system is focused primarily on performance, stability and security. No premature parts are involved into the distribution intended mainly for the production evironment. Quite on the contrary - all of packages included in the distribution have undergone rigorous testing in order to meet the firm demands of production environments. The leading Linux distribution - Red Hat Enterprise Linux -  contains not only standard components such as HTTP, FTP, DNS, DHCP, NFS and so on, but users can find inside a lot of enhancements and extensions for monitoring, development, securing, optomalization, etc. Even the standard version of RHEL involvse  virtualization technologies ( the system with RHEL itself can serve as host for virtualized OS) advanced version  offers clustering tehcnologies, enhanced virtualization and specialised file systems (GFS).

DNS, DHCP, Firewall - Even at the lowest level of implementation of network infrastructure the work begins regularry at the very organization of network elements. The worldwide most frequently used implementations od DNS and DHCP services are inherent parts of the RHEL, as well as SELinux or a standard firewall netfilter  solution that comes with OS RHEL as its  native part.

HTTP and FTP servers developed during years in the incubator of the Open Source community are giving permanently proff of their  reliability and high security on thousands of server worldwideFTP server can be selected as vsftpd (Very Secure FTP Daemon). Probably the most widely used solution for implementing a web server is Apache. They both are part of the standard distribution.

That operating system is RedHat Enterprise Linux, of course, brings you more. RHEL is highly stable, secure  and well supported platform for your services and other applications containing tools for their management and monitoring. Thousands of distribution components are acessible at the manufacturers repositories acessible via  network, the safety and quality is allways approved by Red Hat. Al these RPM packages are fully supported by the manufacturer and are constantly  subject of testing, development and improvment. The work of Red Hat Enterprise Linux does not end at the boundaries of the Linux world. Interoperabilty with the systems running MS Windows is provided by Samba, well known implementation of services depending on the SMB/CIFS protocols. Samba server can simply act as Primary Domain Controller in the network of Windows powered machinech as well as client or Backup Domain Controller in environment managed by native Windows server.   The integration of  your RHEL server into the  Active Directory domain is straightforward. The tools for general backup, work with network storage, virtualization, should be mentioned at least at the margin.

RHEL brings also advanced functionality and usability. Red Hat Enterprise Linux is often used platform for  failover clusters solutions in cases, where high avalability is the key requirement. HA solutions mostly depend on data on shared storage. Red Hat Offers special file system called GFS (Global File System) for this purpose. It allows concurrent access to the data, file locking, quoting, supports clustered LVM etc.

RHEV - Red Hat Enterprise Virtualization

Virtualization remains one of the major themes in the IT world during the past few years. The answer to the demand is Red Hat Enterprise Virtualization. Although there were other strong players on this field, Red Hat quickly became one of them and offers  not only advanced virtualization technologies, but also integrated and centralized environment for  administration and anagement of virtualized systems. In such a way RHEL extends the well known features and advantages of virtualization / increased safety, efficiency of utilization of physical servers and flexibility. Almost  any of the most frequently used operating systems can be virtualized, one HW can host few virtualized operating system and hereby decrease the TOC, energy dissipation etc. conserving the key requirement - strict mutual  isolation of the virtual machines. In this way the different services can run on different isolated systems without need of aditive, dedicated HW. Does your application need an older version of OS and this OS does not support the new hardware? The virtualization solves the problem by isolating the OS itself from the HW layer by emulating the resources by controlled manner. The virtual machines as whole vcan be configured as services in the HA  environment using the technique of live migration: The whole virtual system can be moved from one hosting HW to aother one without interrupting the running services.

The new "envelope" Red Hat Enterprise Virtualization for Server wraps all operations and monitoring  activitiesconcerning the virtual system into one compact, easy-to-use administrative environment accessible simply via web browser and https protocol.

Zimbra

Today one can hardly imagine  company which could function without some kind of groupware - software for easy sharing calendars, documents and directories. Such an system allways integrates or provides access to the  mail system and often offers the service of instant messaging. Implementation of such a solution brings  real benefit for users at all organizational levels. As mature, advanced product we recommend our customers compact product Zimbra, which brings all these functions and much more. His administration interface allows seamless delegation of powers among the administrators. Why should you pay such a precious time of your system administrator or information technology, to be based, or user accounts or disturb them allow for a certain function, when it can do (if you so choose), for example, your assistant? In the Web administration interface Zimbra are all these operations are easy to handle adn really everyone! Do you need some special functions or extensions? Since Zimbra is of modular architecture, there is no problem download and install the plugin (zimlet) fulfilling your needs.