What is a mainframe computer

When you hear the term “big iron”, this usually refers to mainframe computers, machines that typically live inside of large cabinets. You would think that we’re talking about a supercomputer, right? Actually, no. Mainframes are defined a little differently. Supercomputers are great at number crunching to complete extremely complex tasks like weather forecasting, medical research … Read more

NTFS, exFAT, FAT32, ext4 File Systems Explained


File system is a standard for organizing data on a storage device like a hard drive or a solid state drive. It is applied when you format a drive or partition. Today there are lots of different file systems in use with the choices available depending on the operating system you’re using and the type … Read more

What is Fibre Channel over IP (FCIP)

We already wrote about Fiber Channel, and if you remember, the default configuration for using a Fiber Channel system is to install a fiber channel card in our server and connect it to a Fiber Channel switch using fiber optic cable. All the transmission between server and the storage device goes through fiber-optic cabling. We can, … Read more

Types of Printers And Their Interfaces

Before you start Objectives: learn how do dot matrix, ink jet, solid ink, dye sublimation and laser printers work, and which type of interface can they use. Prerequisites: no prerequisites Key terms: ink, paper, print, dot, matrix, jet, head, solid, laser, pins, dye, quality, ribbon, usb, parallel Dot Matrix Printer A dot matrix printer is an impact printer … Read more

Introduction to Network Attached Storage (NAS)

Before you start Objectives: Learn what is NAS, when it is used, and how it is configured. Prerequisites: you should know what is SAN. Key terms: NAS, description, network storage, server  What is NAS If we are implementing a file server on our computer network, and we need to implement huge amounts of storage space for our users … Read more

Introduction to Storage Area Network (SAN)

Before you start Objectives: Learn what is SAN, typical terms used with SAN, and what is clustering. Prerequisites: you should know what is Fiber Channel. Key terms: SAN, Initiator, Target, storage device, Fiber Channel, Clustering  What is SAN SAN is very different from classic PATA or SATA storage devices.  Instead of installing the hard disk drive inside of … Read more

Important RAID Arrays Explained

Before you start Objectives: Learn what is RAID and how most important RAID levels work. Prerequisites: no prerequisites Key terms: disk, data, hard, striping, parity, controller, mirroring, parity, jbod RAID Implementation Redundant Array of Independent Disks (RAID) is a disk subsystem that combines multiple physical disks into a single logical storage unit. Depending on the configuration, a RAID … Read more

Blu-ray Disc (BD)

Before you start Objectives: learn what is Blu-ray and different types of Blu-ray disks. Prerequisites: no prerequisites. Key terms: laser, dvd, drive, layer, read, blue, information, red, single, difference, double, format Blu-ray Design Blu-ray drive uses a similar technology as CDs and DVDs, however there is difference and that is the color of the laser used to read … Read more

DVD Versions and Variations

Before you start Objectives: Learn what is DVD, existing versions of DVD, and which technologies are used to create DVDs. Prerequisites: no prerequisites. Key terms: disk, data, dvd-r, cd, dvd-rw, video, speed, drive, lase, single, hold, rw, digital, layer, read DVD Design Compared to CD, DVD is a newer generation of optical disk storage technology. DVD is an … Read more

CD Versions and Variations

Before you start Objectives: Learn which versions of CDs exists and which technologies they are using. Prerequisites: no prerequisites. Key terms: cd-r, rom, rw, data, disk, drive, speed, standard, write, read, laser, book CD Design CD was originally designed to hold 74 minutes of audio. Now we can also buy a CD which can hold 80 minutes of … Read more