Archive for the ‘Server+’ category

Wake-on-LAN is an ethernet computer networking standard. This standard allows a computer to be turned on or woken up by a network message. The message is usually sent by a simple program executed on another computer on the local area network. Wake-on-LAN support is implemented on the motherboard of a computer and the network interface, and as such, is not dependent on the operating system running on the hardware, although the operating system can sometimes control the WoL behaviour. Copyright © 2009-2010 Wikipedia. All rights reserved.

In-band management is the use of regular data channels (usually through Ethernet) to manage devices. Unlike out-of-band connection, in-band connection is available only when the server is initialized and functioning properly. In-band connection relies on operating-system network drivers to establish computer connections. The most common in-band remote-management hardware device is the network adapter. Users can use remote-access connections to manage servers. The remote-access connection is made through the in-band port that resides on the target server.

Digital Linear Tape (DLT) is a magnetic tape data storage technology developed by Digital Equipment Corporation (DEC). DLT drives support hardware data compression. Media are guaranteed for 30 years of data retention under specified environmental conditions. However, they are easily damaged by mishandling. Current manufacturers of cartridges for the DLT market are Fujifilm, Hitachi/Maxell and Imation. Copyright © 2009-2010 Wikipedia. All rights reserved.

The audio/modem riser (AMR), also known as an AMR slot, is an expansion slot. It is found on the motherboards of some Pentium III, Pentium 4, and Athlon personal computers. It was designed by Intel to interface with chipsets and provide analog functionality, such as sound cards and modems, on an expansion card. It has two rows of 23 pins each, making a total of 46 pins. Copyright © 2009-2010 Wikipedia. All rights reserved.

Out-of-band management involves the use of a dedicated management channel for device maintenance. It allows a system administrator to monitor and manage servers and other network equipment by remote control regardless of whether the machine is powered on. To manage network servers and routers remotely, administrators need network access when problems occur. However, the same problems that cause the network to go down also result in the loss of management access to those devices. Out-of-band management addresses this limitation by employing a management channel that is physically isolated from the data channel. Copyright © 2009-2010 Wikipedia. All rights reserved.

PCI extended (PCI-X) is a computer bus and expansion card standard that enhances the 32-bit PCI Local Bus for higher bandwidth demanded by servers. It is a double-wide version of PCI, running at up to four times the clock speed, but is otherwise similar in electrical implementation and uses the same protocol. PCI-X is often confused with PCI Express, commonly abbreviated as PCIe. Visually there is no such similarity. Also PCI-X slots are longer than PCIe. PCI-X has been replaced in modern designs by the similar-sounding PCI Express. Copyright © 2009-2010 Wikipedia. All rights reserved.

Blade servers are stripped down computer servers with a modular design optimized to minimize the use of physical space. Whereas a standard rack-mount server can function with (at least) a power cord and network cable, blade servers have many components removed to save space, minimize power consumption and other considerations, while still having all the functional components to be considered as a computer. A blade enclosure, which can hold multiple blade servers, provides services such as power, cooling, networking, various interconnects and management. Though, different blade providers have differing principles around what to include in the blade itself.Copyright © 2009-2010 Wikipedia. All rights reserved.

Symmetric multiprocessing (SMP) is a technique that involves a multiprocessor computer architecture where two or more identical processors can connect to a single shared main memory. Most common multiprocessor systems today use an SMP architecture. In the case of multi-core processors, the SMP architecture applies to the cores, treating them as separate processors. SMP systems allow any processor to work on any task no matter where the data for that task are located in memory. With proper operating system support, SMP systems can easily move tasks between processors to balance the workload efficiently. Copyright © 2009-2010 Wikipedia. All rights reserved.

INSTALLATION

• The Switch Mode Power Supply (SMPS) produces 5, -5, 12, and -12 volts DC voltage output.
• Uninterruptible power supply (UPS) is a device that allows a computer to keep running for a short period of time in case of power failure or low voltage, using battery backup. It also provides protection against power surges.