Which of the following storage device can store maximum amount of data?

PGIMS Rohtak NO - 2017

Computer and Nursing Information

Easy

Appeared in: PGIMS Rohtak NO - 2017

Explanation

Hard disks offer vastly superior storage capacity compared to the other options, with modern drives holding hundreds of Gigabytes (GB) to many Terabytes (TB) of data.
This high capacity is achieved by using one or more rapidly rotating magnetic platters where data is stored at a very high density.
Due to their large capacity and relatively low cost per gigabyte, hard disks are the primary means of mass data storage in computers and servers, including those used in healthcare for Electronic Health Records (EHRs) and medical imaging.

Option A: A floppy disk is an obsolete magnetic medium with a very small capacity, typically only 1.44 MB, which is thousands of times smaller than a modern hard disk.
Option C: A Compact Disk (CD) is an optical medium with a standard capacity of about 700 MB. This is significantly less than the capacity of a hard disk.
Option D: Magneto-optic disks are a hybrid storage type whose capacity (ranging from a few hundred MB to a couple of GB) is far less than that of contemporary hard disks.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Comparison of Data Storage Device Capacities as background academic context rather than a clinical decision trigger.
High-capacity storage, primarily on hard disks and server arrays, is fundamental to modern healthcare for managing Electronic Health Records (EHRs), which contain comprehensive patient histories, lab results, and treatment plans.
Medical imaging departments generate massive data files from modalities like MRI, CT scans, and digital X-rays. These files require terabytes of storage on Picture Archiving and Communication Systems (PACS), which are built on hard disk technology.
What if the question asked for the fastest common storage device? The answer would likely be a Solid-State Drive (SSD), which uses flash memory instead of magnetic platters, offering much faster data access speeds than traditional hard disks, though often at a higher cost per gigabyte.

How to Approach the Question

Identify the core of the question: it asks to find the device with the 'maximum' storage capacity from the given list.
Recall the general scale of each storage type. Think in terms of the units used to measure them: Megabytes (MB), Gigabytes (GB), or Terabytes (TB).
Mentally arrange the devices from smallest to largest capacity: Floppy Disk (smallest, MBs) -> Compact Disk (small, MBs) -> Magneto-Optic Disk (medium, MBs to low GBs) -> Hard Disk (largest, GBs to TBs).
Recognize that a Gigabyte is about 1,000 Megabytes, and a Terabyte is about 1,000 Gigabytes. This highlights the vast difference in scale.
Conclude that the hard disk, being the only option commonly measured in Terabytes, has the maximum storage capacity.

Concept Tested & Keywords

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E6 Essentials of Educational Technology Nursing EducationL Gopichandran C Kanniammal (pp 39-344 of 355) p. 200-202