Thanks Bruce...I read and printed the manual page but I've to re-read them. (double and double check is a must to me)

Maybe I've to "study" the SMART technology to know the meaning of some terms...just like the one I quoted previuosly (-S autosave...I don't really understand what means "Autosaving" and what saves in this case :o) ).

Well however I wish to thank you for your patience and your excellent work.

Fabrizio

 Bruce Allen <ballen@gravity.phys.uwm.edu> wrote:

> thank you for having replied in a such short time. Well I thought
> smartd run some tests infact I coulnd't explain the existence of
> smartctl except than reading attributes.

It's also for running self-tests, and examining the self-test logs and ATA
error logs.

Although your main interest is in smartd, you should carefully read the
smartctl manual page as well.

> As you told I've to run
> "smartctl -t long /dev/hda" by crontab...but what should be the most
> right scheduling...I mean 4 hours or more?

I'd suggest about once per week.

> Doesn't this generate some
> problems (conflicts) with the self test which is made by the hard
> disk itself? (or the hard disk doesn't perform any kind of self
> test?).

Please read the smartctl manual page completely. It has a description of
the different types of testing.

> and smartctl updates the
> attributes

smartctl does not update the attributes. As it says in the manual page:
smartctl does not calculate any of these values, it merely reports them
from the S.M.A.R.T. data on the disk.

> 2. smartd will read the updated attributes and will notify
> what changed is. Another question....(sorry :o) ) I can't understand
> when I should use the directive -S:
>
>
> -S VALUE
>
> Enables or disables Attribute Autosave when smartd
>
> starts up and has no further effect. The valid
>
> arguments to this Directive are on and off.
>
>
>
> This is also a command line parameter we can find on using smartctl so
> this seems I can use smartd instead of smartctl, but we have told that
> these programs make different things...so I feel a little confused on
> finding duplicated command line parameter/directive on both smartctl
> and smartd.... :o( when using the one and the other?

In fact you can use either smartctl or smartd to turn on the Attribute
auto-save. It's there as a convenience in smartd.

Cheers,
Bruce



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