William Goddard: Magnetic Disk
Drive, inducted 2007
The US Department of Defense has an often-quoted specification for data shredding on magnetic disk
areal density has grown at an impressive 60% compound annual growth rate historically and has accelerated to greater than a 60% rate since 1999.
Hardware prices for magnetic disk
storage are projected to continue the 30% or greater annual decline for the foreseeable future.
Such an improvement in storage capacity would keep magnetic disks
competitive with optical methods of storing information.
As data becomes less active or moves to an archival state, it becomes too costly to leave the data on spinning magnetic disks
for 24x365 consuming electricity, generating heat, and occupying increasingly costly real estate.
Magnetic tape technology has seen a considerable increase of function and capacity, though not on nearly the steady evolutionary path as magnetic disks
Since its inception in 1956 with the RAMAC 350, the evolution of magnetic disks
has continued to produce rich features and increased functionality with each new offering.
1999 The areal density of magnetic disks
exceeds 20 million bits per square inch.
These devices use flash memory chips instead of rotational magnetic disks
to store data.
Automated libraries using magnetic tape, possibly small form-factor magnetic disks
, the DVD, and possibly other emerging storage mediums will become the foundation containing most of this mass-storage growth.
Company) (Nasdaq:IVAC) received orders for eleven 200 Lean([R]) magnetic disk
sputtering systems from two customers scheduled for delivery in the first half of 2007.