Re: Debian: readonly root filesystem using /dev/root

Michael Black wrote:

On Sun, 14 Dec 2008, Tim Greer wrote:

Jean-David Beyer wrote:

Did you happen to take apart both a SCSI and an EIDE/ATA drive? If
so, could you detect any difference in quality and workmanship
between the two?

No, I have not. Also, it would depend in the brands and models
compared. More importantly, it would not very likely be anything you
could detect the difference in with the naked eye. Moreover, you'd
have to blueprint the circuit, now what all of the microchips did,
and
relate that to whatever BIOS and drivers you use. Obviously it's not
always just the drive, but you can't expect to see the difference in
quality by just taking them apart (though I suppose you might be able
to on some really, really cheap drive, but I doubt it). I don't
expect that you believe there are no differences in quality of
drives, right?

Reread what he asked.

I read it fine the first time.

The issue was whether the drives differ mechanically.

Of course they do, it's a different design. Yes, I get what you mean
about "quality". I was simply saying that it depends, and wanted to
make the point about better or cheaper drive types (scsi, ide, sata,
pata, whatever). In other words, I am not saying scsi are always
better quality. However, SCSI drives are designed with enterprise use
and usually offer better warranties. Of course, there are better and
worse brands and models regarding quality, just like any other drive
type.

If the IDE
are put together in a shoddy fashion, with things that are flimsy
enough that they will break after little useage, and then the SCSI
drives are clearly using thicker metal and bigger magnets and look
like they'll hold up forever.

I understood that aspect.

Someone (and I don't recall who) suggested that going to scsi drives
would make for more reliable drives, or words to that effect.

Yes, that was me, speaking in general with the quality of design and its
intended clients. Historically, that is the case. Also, I clearly
said that my opinion was based on my experience (nothing more).

But
that would only mean something if the premium price paid for scsi
drives went to sturdier mechanical work.

Not really, but part of the equation is certainly quality of materials
(but that's the case with any drive "type").

I suspect the reality is that the premium price of an scsi drive
is because fewer are sold, so they want to recoup the higher cost
that comes with a smaller run.

I don't think so, at all. More would be sold if the prices were lower.
Simply research the difference of the advantages/benefits and intended
users of scsi drives, life, warranties and how they compare to ide,
pata, sata. This is why they cost more.
--
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