Dedicated Server
The term dedicated server refers to an advanced form of web hosting, in which customers rent or buy, and it has complete control of an entire dedicated server. Internet connectivity is provided to the server, in many cases more than 10 or 100 Mbit Ethernet / s. The dedicated servers are often housed in data centers.
The multi-size largest are the so-called mainframe. They are present in the computing market since the inception of the computer industry. These systems are characterized by withstanding a heavy workload and a higher number of users to the rest of the ranges of computers. There are also other factors such as handling very large databases, the existence of transactions on-line very severe, the centralized operation for functional reasons, security and so on., Which distinguish them from medium and small sizes . The mainframe computers continue to be used as central servers for corporate information systems.
The macro computers more powerful computers are commonly used in commercial applications. Are formed by large independent units, with different processors and other central processors that control the entry / exit, mass storage media and communication channels of data from a large number of terminals. The mainframe allow the concurrent work of a large number of applications and users, and its role as the center of transactional systems, such as those requiring banks, airlines, agencies dela administration, and so on.
The mainframes are large computers that have high speed and systems that are capable of controlling at the same time hundreds or thousands of users and hundreds input and output devices. His temperature must be monitored constantly.
In terms of the number of programs that can handle simultaneously, a mainframe is more powerful than a supercomputer, but supercomputers can run a single program faster than a mainframe.
The first mainframes could occupy entire floors even full quart of a building. But today a mainframe is like a row of filing cabinets (such as a library) located in fourth with a false floor under which conceals a huge amount of cables for peripherals.
Mainframes have multiple processors running multiple tasks at once. Usually have multiple disk drives to process and store large amounts of information. In this class belong the IBM 390, 430, and so on.
Linux server
Linux is the name of an operating system and the name of a kernel. It is one of the paradigms of development of free software (and open source), where the source code is publicly available and anyone with the appropriate skills, you can freely study, use, modify and redistribute.
The term Linux strictly refers to the Linux kernel, but is more commonly used to describe the Unix operating system (which implements the POSIX standard), which uses primarily free philosophy and methodology (also known as GNU / Linux) and which is formed by The combination of the Linux kernel with libraries and tools of the GNU project and many other projects / groups of software (free or not free). The kernel is not an official part of the GNU project (which has its own kernel in development, called Hurd), but it is distributed under the terms of the GNU General Public License.
Linux is also the term used to refer to Linux distributions, collections of software that often contain large amounts of packages in addition to the core. The software that often include consists of a huge variety of applications including: graphical environments, office suites, Web servers, mail servers, FTP servers, and so on. Colloquially Linux is the term applied to them, although strict wrong is because the distribution is the most simple and popular for a Linux system.
The trademark Linux (Serial number: 1916230) belongs to Linus Torvalds and is defined as "an operating system for computers that facilitates its use and operation."
Since its launch, Linux has grown in popularity in the server market. His great flexibility has allowed to be used in a wide range of computer systems and architectures: personal computers, supercomputers, portable devices, and so on.
Linux systems run on more than 20 different hardware platforms, including the most common are the systems of x86-compatible PCs and x86-64, Macintosh computers, PowerPC, Sparc and MIPS.
There are also Groups of Linux users in virtually all areas of the globe.
Windows Server
Windows Server 2003 is the version of Windows for servers launched by Microsoft in 2003. It is based on the core of Windows XP, which is added a range of services, and it blocked some features (to improve performance, or simply because they will not be used).
Features
Its most important features are:
* NTFS:
1. shares
2. compression and encryption of files, folders and entire units.
3. allows storage devices on file systems of other devices like unix
* Storage management, backups ... includes hierarchical storage management, is to use a cache algorithm for moving data from hard disks used less to optical or similar means slower, and re-read a hard disk when needed.
* Windows Driver Model: Implementation of basic devices used in this way the device manufacturers only have to schedule some of its hardware specifications
* ActiveDirectory Directory LDAP-based organization, allows for centrally managing the security of a corporate network at the local level.
* Authentication Kerberos5
* DNS record of IP addresses dynamically
* Security policies
Servers
The server that handles Windows 2003 are:
* File Server
* Print Server
* Application Server
* E-mail server (SMTP / POP)
* Terminal Server
* Server Virtual Private Networks (VPN) (or remote access server)
* Domain Controller (through Active Directory)
* DNS server
* DHCP Server
* Streaming Video Server
* WINS Server
Regarding improvements Windows 2008 Server
Main differences with Windows 2008 server
1. During installation starts with the minimum of services activated in order not to compromise the security of the system
2. Improvements in the management of security policies
3. Active Directory no longer uses NetBIOS but require the presence of a DNS that supports Service Records (detection services offered by a machine through a DNS)
New Intel Nehalem processor
This Intel® Xeon x5530 processor supports up to 16 simultaneous threads, with 32- and 64-bit processing capabilities, a new, inclusive shared L3 cache that boosts performance while reducing traffic to the processor cores.
Quad-Core Xeon x5500
CariNet offers the Gainestown with 6GB DDR3-1333 memory (Up to 48GB).
New Intel Gainestown Series
These multi-core servers help maximize productivity, enhance visualization, and improve flexibility to help researchers, engineers, and developers achieve more in less time.