Linux, Module 6

A rackmount server that has a standard height of 1.75 inches.

See rackmount server.

A virtual machine configuration and management tool included with the GNOME desktop.

Used to view and manage BTRFS filesystems.

A subdirectory on a BTRFS volume that can be mounted as a separate unit by BTRFS.

Used to check and repair BTRFS filesystems.

Used to change the root of one Linux system to another.

In BTRFS terminology, it refers to the blocks on the BTRFS filesystem used to store data.

Used to update the module dependency database.

The MPIO implementation used by Linux servers.

A RAID configuration consisting of two hard disks to which identical data are written in parallel, ensuring fault tolerance. Also known as RAID 1.

A RAID configuration in which a single file is divided into sections, which are then written to different hard disks concurrently to speed up access time; this type of RAID is not fault tolerant. Also known as RAID 0.

A RAID configuration that incorporates disk striping for faster file access, as well as parity information to ensure fault tolerance. Also known as RAID 5.

Used to list the information recorded by the Linux kernel at the beginning of the boot process.

Term used to describe a device that exhibits a minimum of downtime in the event of a failure.

A technology that transfers data across fiber optic or Ethernet networks.

A RAID system controlled by the computer’s BIOS/UEFI.

The most common boot loader used on Linux systems. It loads and executes the Linux kernel at boot time.

A virtual operating system that is run on a hypervisor.

A RAID system controlled by hardware located on a disk controller card within the computer.

A controller card that connects to FC storage.

The operating system used to host a Type 2 hypervisor.

The software component that provides for virtualization.

Used to load a module into the Linux kernel.

The files created at installation to record actions that occurred or failed during the installation process.

A SCSI technology that transfers data via TCP/IP networks.

A term that refers to the computer that connects to the iSCSI target within an iSCSI SAN.

A term that refers to a storage device within an iSCSI SAN.

Used to configure an iSCSI initiator.

Used to configure journald, as well as to view log entries in the journald database.

A system used to record (or journal) system events on modern Linux distributions.

See spanning.

A hypervisor that is built into the Linux kernel.

A Linux distribution containing packages that are geared specifically for Linux servers.

A unique identifier for each device attached to any given node in a SCSI chain.

Used to list information about the hardware components on a Linux system.

Used to list modules that are currently loaded in a Linux kernel.

Used to configure software RAID on a Linux system.

In BTRFS terminology, it refers to the inode table on the BTRFS filesystem.

Used to create a BTRFS filesystem.

Used to list information about a module.

Used to load a module, including any module dependencies, into the Linux kernel.

A Linux device driver that is inserted into the Linux kernel in a modular fashion.

Used to configure DM-MPIO on a Linux system.

A technology used to provide multiple redundant connections to a SAN for fault tolerance and speed.

Term used to describe a CPU that runs faster than the clock speed for which it has been rated.

The traditional SCSI technology that transfers data across parallel cables.

A software component that provides fast virtual machine access to KVM.

A thin form factor used to house server hardware that is installed in a server rack.

An implementation of RAID level 5 using ZFS, which uses a variable stripe that provides for better performance and fault tolerance.

The process of combining the storage space of several hard disk drives into one larger, logical storage unit.

Used to remove a module from the Linux kernel.

A number that uniquely identifies and prioritizes devices attached to a SCSI controller.

An error that software encounters when it cannot locate the information needed to complete its task.

A graphical remote access protocol commonly used to manage virtual machines; it is the default for Boxes.

A virtualization feature that allows you to revert to a previous version of a virtual hard disk file.

A RAID system that is controlled by software running within the operating system.

A type of RAID level 0 that allows two or more devices to be represented as a single large volume.

A group of computers that access the same storage device across a fast network.

In BTRFS terminology, it refers to the BTRFS superblock.

The process of using a live Linux OS to access and repair a damaged Linux installation.

See SCSI ID.

A device used to terminate an electrical conduction medium to absorb the transmitted signal and prevent signal bounce.

The process of using a virtual hard disk file that has a fixed size.

The process of using a virtual hard disk file that dynamically expands as needed up to a maximum size.

A hypervisor that runs directly on computer hardware.

A hypervisor that runs as a program within an operating system.

A device that contains battery storage and is used to supply power to computers in the event of a power outage.

A cross-platform technology that allows users to connect to a graphical desktop across a network.

The process of running several separate operating systems concurrently on a single computer.

A unique name that can be assigned to a storage device. FC requires that each storage device and controller have a WWN.

A high-performance filesystem and volume management software that is often used to create fault tolerance volumes from multiple storage devices on Linux and UNIX systems that are resilient to corruption.

Used to configure ZFS filesystem features.

A series of storage devices that are managed by ZFS.

A subdirectory on a ZFS volume that can be managed as a separate unit by ZFS.

A volume created from space within a ZFS pool that contains a ZFS filesystem.

Used to configure ZFS pools and volumes.