Re: "aborting sbp2 command"

Hi Stefan Richter,

On Sat, 1 Nov 2003 20:59:44 +0100 (CET) Stefan Richter <stefanr@s5r6.in-berlin.de> wrote:

[snip]
> I read your first post again. What comes to my mind as possible
> explanations is:
> - an unknown bug, perhaps uncovered by shared interrupts;
> - too much noise;
> - too high temperature around the harddisk drive.
>
> Let me say this: I suspect if somebody would go through the
> mailinglist archive and would make statistics about reports of
> read/write problems with sbp2, we would see more of them during
> April to September, given that most SBP-2 harddisks are in use at
> the northern hemisphere. Most of the HDD enclosures have a
> problematic thermal design. Do not think the drive is
> appropriately cooled if the drive case comes with one of those
> noise-making tiny fans. How could these ensure an evenly air flow
> in a typical 3.5" drive case without leaving some hot spots? I
> have seen for myself that inner air temperature must stay
> 10...15 Kelvin below the operating environmental temperature
> specified by the harddisk manufacturer, else r/w errors may pop
> up. Additionaly, air flow has to be rather ample than modest if
> we talk about 7200 RPM drives.

I've the same problems, see my post to this mailing list:
        Date: Tue, 23 Sep 2003 12:37:49 +0200
        From: wwp <subscript@free.fr>
        Sender: linux1394-user-admin@lists.sourceforge.net
        To: linux1394-user@lists.sourceforge.net
        Subject: Issues using an external IDE<->IEEE1394 combo
with an external usb2/ieee1394 aluminium enclosure and a
7200RPM IDE drive inside.
But I have to say that when I use the USB2 connection, it works
well. And the drives reach the same temperatures, doesn't it?
Or do you think the ieee1394-specific chipset in my enclosure
could be more sensible to overheat?
Moreover, the same enclosure+disk+ieee1394 wire used with a
win2k system don't lead to any (visible) problem.

Regards,

-- 
wwp
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