金枪鱼
现已禁止
加入时间: 2009/08/21
文章: 744
经验值: 23330
|
|
|
作者：金枪鱼 在 驴鸣镇 发贴, 来自 http://www.hjclub.org
http://www.pcmech.com/article/hard-drives-how-they-work/
（2001）：
| 引用: |
| The newest and largest drives make use of a new technology of glass/ceramic platters. Basically, this is glass with enough ceramic within to resist cracking. This glass technology is taking over aluminum in the hard drive industry. Many popular manufacturers already use it, including Maxtor, Toshiba, and SeaGate. Glass platters can be made much thinner than aluminum ones, they can better resist the heat produced during operation and they are also better able to withstand the extreme centrifugal forces during spinning on the spindle. The platters are mounted onto a spindle in the interior of the HDA. |
http://alasir.com/books/hards/008-009.html
（1998）：
| 引用: |
Platters traditionally have been made from an aluminum alloy for strength and light weight. With manufacturers’ desire for higher and higher densities and smaller drives, many drives now use platters made of glass (or, more technically, a glass-ceramic composite). One such material is called MemCor, which is produced by the Dow Corning Corporation. MemCor is composed of glass with ceramic implants, which resists cracking better than pure glass.
Glass platters offer greater rigidity and, therefore, can be machined to one-half the thickness of conventional aluminum disks, or less. Glass platters also are much more thermally stable than aluminum platters, which means that they do not change dimensions (expand or contract) very much with any changes in temperature. Several hard disks made by companies such as Seagate, Toshiba, Areal Technology, Maxtor, and Hewlett-Packard currently use glass or glass-ceramic platters. For most manufacturers, glass disks will replace the standard aluminum substrate over the next few years, especially in high-performance 2 1/2- and 3 1/2-inch drives. |
http://forums.xkcd.com/viewtopic.php?f=36&t=80276
（2012）
| 引用: |
Re: When did they start making hard-drive platters out of gl
by Seraph » Wed Feb 08, 2012 2:06 am UTC
IBM started putting them in consumer hard drives in or around 2000, and they were available in SCSI drives back in the 90's. After a brief search I managed to find an article in Infoworld back in 1989 talking about how glass hard drive patters were possible in the future.
That said, desktop hard drives frequently had aluminum platters in them in the 2000's, IBM was the only company making them in 2003. I believe just about all laptop drives were glass platter by then. |
http://www.scribd.com/doc/37792234/Hard-Disk-Basics
(2005) p27:
| 引用: |
Due to the way the platters spin with the read/write heads floating just abovethem, the platters must be extremely smooth and flat. With older, slowerspindle drives and relatively high fly heights, the uniformity of the plattersurface was less of an issue. Now, as technology advances, thegap betweenthe heads and the platteris decreasing, and the speed that the platters spinat is increasing, creating more demands on the platter material itself. Unevenplatter surfaces on hard disks running at faster speeds with heads closer tothe surface are more apt to lead tohead crashes. For this reason many drivemakers began several years ago to look at alternatives to aluminum, such asglass, glass composites, and magnesium alloys.
……
It now is looking increasingly likely that glass and composites made with glasswill be the next standard for the platter substrate. IBM has been shippingdrives with glass platters for several years and in 2000 is introducing them into the IDE/ATA consumer drive market. Compared to aluminum platters,glass platters have several advantages:……
|
作者：金枪鱼 在 驴鸣镇 发贴, 来自 http://www.hjclub.org |
|
|
[原创]中国全面进入掰谎时代
