Re: 3 way mirror

[Phil Turmel <philip@turmel.org>]

On 9/12/22 05:26, Roman Mamedov wrote:
> On Mon, 12 Sep 2022 10:16:55 +0200
> Reindl Harald <h.reindl@thelounge.net> wrote:
> 
>>> That's called paranoia
>>
>> that's called common sense
>>
>>> ALL drives have hiccups when there's absolutely
>>> nothing wrong with them. What are the manufacturer's error figures?
>>> Expect at least one error every two or three complete passes of pretty
>>> much every large big disk nowadays?
>> i don't expect any SMART error at all and if one hits after years of
>> uptime fine that the drive don't fail completly - but would i trust it? no!
> 
> I have multiple drives (Hitachi) which have developed around 3 to 10
> reallocated sectors, and then just continue to work for years, not increasing
> those further. Throwing them away would be uneconomical. Not always a
> reallocated sector is a sign of impeding failure, what you need to look for is
> if there is more than one, and the count is increasing quickly.

Concur. I do not replace drives for reallocated sectors until they reach 
double digits.  Modern drives are expected to do this.

> Generally though, if you are way too concerned about individual drive failures,
> it could be a sign that you do not have a robust enough backup scheme in place.

Heh.

Phil