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Technical explanation of FDB drives?

Last response: in Storage
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Hello;

I am looking for a document which explains the difference between ball bearing and fluid dynamic bearing harddrives.
Does anyone know about a website or so which explains the differences?

I feel uneasy about FDB: I have the feeling that it's a cheap solution like the sleeve bearing engines of cheap fans.
So I'm worried about the long term reliability of FDB drives, especially since the introduction of FDB fell together with the lowering of the warranty from 3 years to only 1 year.

Thanks in advance;
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after googling i found this

<A HREF="http:// http://www.hgst.com/hdd/travel/fdbwhitepaper.pdf " target="_new">http:// http://www.hgst.com/hdd/travel/fdbwhitepaper.pdf </A>

<A HREF="http:// http://www.goldsource.com/fluid-drive.asp " target="_new">http:// http://www.goldsource.com/fluid-drive.asp </A>

<A HREF="http:// http://www.byte.com/art/9802/sec9/art3.htm " target="_new">http:// http://www.byte.com/art/9802/sec9/art3.htm </A>

u can find lots more info by searching

but i got to tell u that this technology is better than its predecessor and have confidence in it.

Quote:
I feel uneasy about FDB: I have the feeling that it's a cheap solution like the sleeve bearing engines of cheap fans

dont compare fdb with that stuff. this is a computer hard drive mechanism.

Quote:
So I'm worried about the long term reliability of FDB drives, especially since the introduction of FDB fell together with the lowering of the warranty from 3 years to only 1 year.

it is reliable. i dont know if the the lowering of warranties had something to do with the reliability of FDB drives

I didn't look anything up, I'm going by knowledge here, so anyway:

I believe FDB uses the newer classes of ceramic bearing which form a fluid surface when heated by friction. These materials are very slick and have shown huge gains in thermal efficiency in the automotive developement field (my field). They should be well suited to a hard drive, and I haven't heard any complaints. Also, they should be much quieter.

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