- Rack unit (U): A rackmount measurement of 1.75 inches (44.45 millimeters) of height. The height of rackmount devices is in Us, such as 1U, 2U, 3U, or a 4U half-rack mount.
- Rackmount: A two- or four-rail vertical structure for servers and other rack-mount devices.
- RAID 0: Disk striping to multiple disk drives.
- RAID 1: Mirrors data to another disk volume.
- RAID 10: Combines the mirroring of RAID 1 with the striping of RAID 0, but without parity.
- RAID 5 – RAID 0 with parity added.
- RAID 6 – RAID 5 with the parity doubled.
- Random access memory (RAM): The volatile storage area that serves as a conduit for program instructions, data, and addressing going to or coming from the CPU.
- RAS Precharge (tRP): The time required to release the active row in memory.
- Recovery point objective (RPO): The target point-in-time to be reestablished through data recovery for a failed system...
CompTIA Server+ Certification Guide
By :
CompTIA Server+ Certification Guide
By:
Overview of this book
CompTIA Server+ Certification is one of the top 5 IT certifications that is vendor neutral.System administrators opt for CompTIA server+ Certification to gain advanced knowledge of concepts including troubleshooting and networking.
This book will initially start with the configuration of a basic network server and the configuration for each of its myriad roles. The next set of chapters will provide an overview of the responsibilities and tasks performed by a system administrator to manage and maintain a network server. Moving ahead, you will learn the basic security technologies, methods, and procedures that can be applied to a server and its network. Next, you will cover the troubleshooting procedures and methods in general, and specifically for hardware, software, networks, storage devices, and security applications. Toward the end of this book, we will cover a number of troubleshooting and security mitigation concepts for running admin servers with ease. This guide will be augmented by test questions and mock papers that will help you obtain the necessary certification.
By the end of this book, you will be in a position to clear Server+ Certification with ease.
Table of Contents (28 chapters)
Preface
Server Hardware
Server Internals
Data Storage
Server Operating Systems
Addressing
Section 2: Administration
Server Administration
Server Maintenance
Virtualization
Disaster Recovery
Section 3: Security
Security Systems and Protocols
Physical Security and Environmental Controls
Logical Security
Section 4: Troubleshooting
Troubleshooting Methods
Common Hardware Issues
Common Software Issues
Common Network Issues
Common Storage Issues
Common Security Issues
CompTIA Server+ Examination
Assessment
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