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From: Keith R. Williams
Subject: Re: Need loud anti-dog barking ultrasonic device.
Date: Mon, 23 Dec 2002 11:17:38 -0500
X-Newsreader: MicroPlanet Gravity v2.60
In article , firstname.lastname@example.org says...
> > Nope. 30 MegaByte and 30 millisecond. Terry! I'm ashamed of
> > you for not knowing this lore! ;-)
> > ----
> > Keith
> Off topic regarding the Dog thread, but here's the answer...
> From site:
> In 1973, IBM introduced the model 3340 disk drive, which is commonly
> considered to be the father of the modern hard disk. This unit had two
> separate spindles, one permanent and the other removable, each with a
> capacity of 30 MB. For this reason the disk was sometimes referred to as the
> "30-30". This name led to its being nicknamed the "Winchester" disk drive,
> after the famous "30-30" Winchester rifle. Using the first sealed internal
> environment and vastly improved "air bearing" technology, the Winchester disk
> drive greatly reduced the flying height of the disk: to only 17 microinches
> above the surface of the disk. Modern hard disks today still use many
> concepts first introduced in this early drive, and for this reason are
> sometimes still called "Winchester" drives.
I started with IBM in '74 and was told the 30MB/30Ms version of code
name. I believe the name comes from technology that precedes the 3340
but I could be wrong (there is a first for everything ;-).
Another term for hard disk drive. The term Winchester
comes from an early type of disk drive developed by IBM
that stored 30MB (megabytes) and had a 30-millisecond access
time; so its inventors called it a Winchester in honor of
its 30/30 rifle.
From the American Heritage Dictionary:
NOUN: An early type of hard disk.
ETYMOLOGY: After the Winchester, tradename for a .30-30
rifle, a rifle shooting a .30-caliber bullet with a
powder grain size designation of 30 (from the
disk's storage capacity of 30 MB and its access
time of 30 milliseconds).
Winchester Disk: Named after the .30-caliber Winchester
rifle, winchester disk drive is a hard disk
drive developed by IBM that had two
30MB capacity and offered a 30
millisecond (ms) access time.
On the other hand, IBM seems to agree with your "definition":
First disk drive to use low-mass heads, lubricated disks, and
sealed assembly, which came to be known as Winchester drive
technology and set the industry standard for the next decade.
The 3340 Winchester drive featured two spindles with a storage
capacity of 30 million characters each, hence 30-30, or
While the discovery of Rare Earth by IBM engineers, which is
used in all rewritable optical media, opened up remarkable
possibilities for optical storage technology, it was the
introduction of Winchester drive technology that set the
industry standard for the next decade. The 3340 Winchester
drive featured two spindles with a storage capacity of 30
million characters each (30-30) — hence the nickname
"Winchester". Other IBM innovations during this period included:
So who are you going to believe? Webopedia, AHD, or IBM? ;-)
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