Review: Four Pocket-Sized Hard Drives - InformationWeek

InformationWeek is part of the Informa Tech Division of Informa PLC

This site is operated by a business or businesses owned by Informa PLC and all copyright resides with them.Informa PLC's registered office is 5 Howick Place, London SW1P 1WG. Registered in England and Wales. Number 8860726.

IoT
IoT
Hardware & Infrastructure

Review: Four Pocket-Sized Hard Drives

It's a small world for your data, as proven by these portable one-inch hard drives from Archos, Imation, Seagate, and Sony.

Back in the ‘80s, a personal computer’s hard drive had a 5.25-inch form-factor that was roughly twice the height of today’s optical drives, was heavy enough to be awkward to hold in one hand, and, at the high end, could handle as much as 100MB (if you could afford it). These days, though, small is in.

One-inch hard drives began appearing in cutting-edge media players and some smart cell phones almost six months ago. Now they’ve migrated from living inside handheld devices to being available as external, and highly portable, USB devices.


Contents

Archos ArcDisk

Imation Micro Hard Drive

Seagate Pocket Hard Drive

Sony Micro Vault Pro

Summary

How have we gotten from 5.25 inches to one inch? It's not just a matter of shrinking the component sizes — otherwise, the capacity of hard drives would have shrunk along with their physical dimensions. By the time we hit the one-inch size, the average flash drive would have been more spacious. While there are other factors involved, successfully downsizing the hard disk is basically the result of increasing the areal density, or how much data can be packed into a given square unit of area of one of the drive’s platters.

Currently, by refining the method used to lay down particles on a drive’s platter and the ability to read and write to them, we’re hovering around 100 gigabits per square inch. Yes, those are gigabits — it takes eight of them to make up 1GB (gigabyte) of data. (And it gets more confusing — hard drive manufacturers insist that 1KB is 1,000 bytes while savvy computerists understand that it’s really 1,024 bytes. That’s why rated and actual hard drive capacities never seem to quite agree.)

These one-inch drives have a theoretical maximum of 12GB. What this actually translates down to is about 6GB per platter.

We haven't hit any kind of wall even yet. Technology continues to evolve. Not only are there smaller (0.85-inch) drives in the hopper (not to mention one in this review), but also larger areal densities (at least 138Gb/in²) on the horizon, thanks to the use of vertical (also called perpendicular) recording technology. In current technology, horizontal (or longitudinal) recording, the bits used to record the 1’s and 0’s of digital data are laid out end-to-end on the drive’s platter. In a vertical world, those bits stand up on the platter, side by side, allowing more of them to be packed together. While hard disks are considered a non-volatile (or permanent) storage medium, their design technology is apparently quite volatile.

(You may at this point be asking, "Why not simply use a USB drive (or flash drive, pen drive, keychain drive, key drive or memory key, depending on what you like to call it)?" The key —forgive the pun — is that hard drives are cheaper.)

The pocket pals reviewed in this article are from Archos (4GB), Imation (2GB), Seagate (5GB), and Sony (5GB). All of these drives are powered through the computer’s USB port. Don’t expect them to work from a non-powered USB hub or keyboard. Both of these devices draw power from your PC’s internal USB, where the maximum available power is 500 milliamps (mA). Adding a mechanical device like a hard drive may push you beyond that maximum.

In addition, while each of these drives is capable, in theory, of being used as a boot device, putting that into practice means being able to create a boot partition on the drive and, more importantly, having a computer that will let you boot from a USB device. Not all do.

How We Tested
To test the pocket hard drives, I created three groups of files, each containing three sets of files.

The first group was comprised of Microsoft Word documents in a wide variety of sizes. The first file set in this group contained 4,410 files, the second contained 8,820 files, and the third contained 11,025 files.

The three file sets of the second group consisted of video files: 1.68GB, 3.41GB, and 4.58GB, respectively. The first file set contained two files, the second had four, and the third had five.

The group of music files was composed of 1.75GB, 3.67GB, and 4.51GB MP3 file sets. The total number of files in each music set was greater than the number in each of the video sets, but also well below the count of .doc files in the first group.

Windows Copy and Paste was used to perform the transfers, and timing was done manually using a Heuer stopwatch.

We welcome your comments on this topic on our social media channels, or [contact us directly] with questions about the site.
Previous
1 of 6
Next
Comment  | 
Print  | 
More Insights
State of the Cloud
State of the Cloud
Cloud has drastically changed how IT organizations consume and deploy services in the digital age. This research report will delve into public, private and hybrid cloud adoption trends, with a special focus on infrastructure as a service and its role in the enterprise. Find out the challenges organizations are experiencing, and the technologies and strategies they are using to manage and mitigate those challenges today.
News
COVID-19: Using Data to Map Infections, Hospital Beds, and More
Jessica Davis, Senior Editor, Enterprise Apps,  3/25/2020
Commentary
Enterprise Guide to Robotic Process Automation
Cathleen Gagne, Managing Editor, InformationWeek,  3/23/2020
Slideshows
How Startup Innovation Can Help Enterprises Face COVID-19
Joao-Pierre S. Ruth, Senior Writer,  3/24/2020
Register for InformationWeek Newsletters
Video
Current Issue
IT Careers: Tech Drives Constant Change
Advances in information technology and management concepts mean that IT professionals must update their skill sets, even their career goals on an almost yearly basis. In this IT Trend Report, experts share advice on how IT pros can keep up with this every-changing job market. Read it today!
White Papers
Slideshows
Twitter Feed
Sponsored Live Streaming Video
Everything You've Been Told About Mobility Is Wrong
Attend this video symposium with Sean Wisdom, Global Director of Mobility Solutions, and learn about how you can harness powerful new products to mobilize your business potential.
Sponsored Video
Flash Poll