Posts Tagged ‘GB’

Gigabyte to Terabytes

September 26th, 2012 Comments off

For fun, here is a comparison of some old storage media with something in our data recovery lab right now.


On the left is an IBM 3380 ‘direct storage access device’ circa 1980. Capacity: 1 GB. On the right, a RAID recovery on one of our lab workbenches, set up in a couple of storage cases. Capacity: 48 TB.

The cases and the old IBM device are about the same …

Categories: Data Backup Tags: , , ,

How does HDD store data?

April 10th, 2011 Comments off

How does HDD store data?Hard disk drives store data on one or more metal oxide platters. These platters spin at a rate of 3600-10,000 revolutions/minute, hold magnetic charges. A read-write head attached to an actuator arm actually floats on a cushion of air, 1-2 micro-inches (one millionth of an inch) above the surface of the platters. Data flows to and from these heads via electrical connections. Any force alters this process may cause data …

Glossary of Western Digital Hard Disk Drive (Letter G)

August 2nd, 2010 Comments off

GB Gigabyte. WD defines a gigabyte as 1,000,000,000 (one billion) bytes or 1000 (one thousand) megabytes.

GMR Giant magnetoresistive. An advanced form of head technology.

GPL General Public License. Free software license which grants recipients rights to modify and redistribute the software which would otherwise be prohibited by copyright law.

GPS Global positioning system. Provides specially coded satellite signals which can be processed in a GPS receiver to compute position, …