Re: [git patch] libata resume fix

[Linus Torvalds <torvalds@osdl.org>]

On Tue, 30 May 2006, Mark Lord wrote:
> 
> Not in a suspend/resume capable notebook, though.
> 
> I don't know of *any* notebook drives that take longer
> than perhaps five seconds to spin-up and accept commands.
> Such a slow drive wouldn't really be tolerated by end-users,
> which is why they don't exist.

Indeed. In fact, I'd be surprised to see it in a desktop too.

At least at one point, in order to get a M$ hw qualification (whatever 
it's called - but every single hw manufacturer wants it, because some 
vendors won't use your hardware if you don't have it), a laptop needed to 
boot up in less than 30 seconds or something.

And that wasn't the disk spin-up time. That was the time until the Windows 
desktop was visible.

Desktops could do a bit longer, and I think servers didn't have any time 
limits, but the point is that selling a disk that takes a long time to 
start working is actually not that easy. 

The market that has accepted slow bootup times is historically the server 
market (don't ask me why - you'd think that with five-nines uptime 
guarantees you'd want fast bootup), and so you'll find large SCSI disks in 
particular with long spin-up times. In the laptop and desktop space I'd be 
very surprised to see anythign longer than a few seconds.

		Linus
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