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pixel — A single point on a video display. Pixels are arranged in rows and columns to create an image. A video resolution, such as 640 x 480, is expressed as the number of pixels across by the number of pixels up and down.

POST — Power-on self-test. Before the operating system loads when you turn on your system, the POST tests various system components such as RAM and hard drives.

processor — The primary computational chip inside the system that controls the interpretation and execution of arithmetic and logic functions. Software written for one processor must usually be revised to run on another processor. CPU is a synonym for processor.

protected mode — An operating mode that allows operating systems to implement:

•A memory address space of 16 MB to 4 GB

•Multitasking

•Virtual memory, a method for increasing addressable memory by using the hard drive

The Windows 2000 and UNIX 32-bit operating systems run in protected mode. MS-DOS cannot run in protected mode.

PS/2 — Personal System/2.

PXE — Preboot eXecution Environment. A way of booting a system via a LAN (without a hard drive or bootable diskette).

RAC — Remote access controller.

RAID — Redundant array of independent disks. A method of providing data redundancy. Some common implementations of RAID include RAID 0, RAID 1, RAID 5, RAID 10, and RAID 50. See also guarding, mirroring, and striping.

RAM — Random-access memory. The system’s primary temporary storage area for program instructions and data. Any information stored in RAM is lost when you turn off your system.

RAS — Remote Access Service. This service allows users running the Windows operating system to remotely access a network from their system using a modem.

readme file — A text file, usually shipped with software or hardware, that contains information supplementing or updating the product’s documentation.

read-only file — A read-only file is one that you are prohibited from editing or deleting.

ROM — Read-only memory. Your system contains some programs essential to its operation in ROM code. A ROM chip retains its contents even after you turn off your system. Examples of code in ROM include the program that initiates your system’s boot routine and the POST.

ROMB — RAID on motherboard.

Glossary

R905, HX574 specifications

The Dell HX574 R905 server is a robust solution designed for enterprises that demand high performance and reliable scalability. Part of Dell’s PowerEdge lineup, the R905 addresses the requirements of virtualization, cloud computing, and large-scale data processing, making it an attractive choice for various workloads.

One of the notable features of the Dell HX574 R905 is its powerful multi-core processors. Equipped with AMD Opteron processors, it offers up to 16 cores per CPU, allowing for exceptional multi-threading capabilities. This architecture is designed to enhance performance across multiple applications, making it suitable for environments that require significant processing power. The server supports several configurations, enabling businesses to tailor the processing capabilities based on their specific needs.

Memory capacity is another defining characteristic of the R905. The server can support up to 256 GB of RAM, utilizing DDR2 technology. This high memory capacity facilitates running memory-intensive applications smoothly, enabling businesses to maximize their productivity. The server is equipped with eight DIMM slots, giving administrators flexibility in memory expansion.

In terms of storage, the Dell HX574 R905 provides a range of options, supporting both SAS and SATA drives. This allows organizations to achieve a balance between performance and cost-efficiency. With the capacity to house up to 16 drive bays, the R905 ensures that there is ample storage space for high-demand database and application workloads.

The server also features advanced virtualization capabilities. With support for virtualization technologies like VMware and Microsoft Hyper-V, the R905 enables businesses to optimize their resource usage, running multiple virtual machines on a single physical server. This can significantly reduce hardware costs and improve energy efficiency.

Power management is another highlight of the Dell R905. It comes with various energy-efficient features, including the ability to dynamically allocate power based on workload demands. This capability helps organizations to lower their operational costs while ascertaining high availability.

In conclusion, the Dell HX574 R905 server stands out due to its powerful processors, extensive memory support, flexible storage options, and advanced virtualization capabilities. It is a versatile platform for businesses looking to optimize their IT infrastructure while maintaining scalability and efficiency. As demands continue to grow, the R905 remains a reliable choice for organizations seeking to enhance their computing capabilities.