From: David Brown <david.brown@hesbynett.no>
To: Emmanuel Noobadmin <centos.admin@gmail.com>
Cc: Alex <creamyfish@gmail.com>,
stan@hardwarefreak.com, linux-raid@vger.kernel.org
Subject: Re: Is this enough for us to have triple-parity RAID?
Date: Wed, 25 Apr 2012 21:29:46 +0200 [thread overview]
Message-ID: <4F9850AA.4000002@hesbynett.no> (raw)
In-Reply-To: <CAAYorBK4NYA3Gky1oh9yftRRbxWad6SE+D+Lr2SJ+5kfKZ-A2w@mail.gmail.com>
On 25/04/12 18:59, Emmanuel Noobadmin wrote:
> On 4/25/12, Alex<creamyfish@gmail.com> wrote:
>> I can see that you are trying very hard to fit a new picture into an old
>> frame. But with new technology there is always new possibilities. For
>> example, what I am thinking is: with the new laser write head, it doesn't
>> necessarily require the head to stay very close to the platter since laser
>> doesn't fade away with longer distance, which may enable a design that
>
> The strength of the laser will fall as the distance to the media
> increases, wouldn't it?
>
The laser's strength will only fade very slightly. It is not passing
through enough air to significantly attenuate, and one of the points of
using a laser is that you can focus it into a very tightly linear beam.
So you are right in theory, but wrong in practice.
next prev parent reply other threads:[~2012-04-25 19:29 UTC|newest]
Thread overview: 37+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-04-17 6:11 Is this enough for us to have triple-parity RAID? Alex
2012-04-17 7:58 ` David Brown
2012-04-17 16:37 ` Stefan /*St0fF*/ Hübner
2012-04-18 14:15 ` Alex
2012-04-18 14:11 ` David Brown
2012-04-17 17:16 ` Piergiorgio Sartor
2012-04-17 20:18 ` David Brown
2012-04-17 20:54 ` Piergiorgio Sartor
2012-04-18 18:22 ` Piergiorgio Sartor
2012-04-18 20:20 ` David Brown
2012-04-18 20:39 ` Piergiorgio Sartor
2012-04-19 18:16 ` H. Peter Anvin
2012-04-20 2:27 ` Alex
2012-04-20 3:00 ` H. Peter Anvin
2012-04-20 3:32 ` Alex
2012-04-20 18:58 ` David Brown
2012-04-20 19:39 ` H. Peter Anvin
2012-04-20 21:04 ` Piergiorgio Sartor
2012-04-20 21:01 ` Piergiorgio Sartor
2012-04-20 21:29 ` Peter Grandi
2012-04-20 22:31 ` Piergiorgio Sartor
2012-04-21 9:51 ` Peter Grandi
2012-04-21 11:18 ` Piergiorgio Sartor
2012-04-22 3:14 ` Alex
2012-04-22 8:57 ` Piergiorgio Sartor
2012-04-20 7:45 ` Stan Hoeppner
2012-04-23 15:26 ` Alex
2012-04-25 1:20 ` Stan Hoeppner
2012-04-25 2:45 ` Alex
2012-04-25 16:59 ` Emmanuel Noobadmin
2012-04-25 19:29 ` David Brown [this message]
2012-04-26 2:30 ` Alex
2012-04-27 15:15 ` Emmanuel Noobadmin
2012-05-01 16:38 ` Alex
2012-04-26 4:24 ` Alex
-- strict thread matches above, loose matches on Subject: below --
2012-04-16 12:55 Alex
2012-04-16 10:04 Alex
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