Re: [smartmontools-support] Which attributes can estimate number of bad blocks?

[Robert S <ro...@sp...>]

My thresholds are based mostly on the fact I don't get to monitor the 
most of the hard drives. I get to see them once a month, if that. I also 
know the data is not backed up often, if at all, so I tend to be very 
conservative. It is cheaper to replace than to do data recovery.

And for those I can monitor regularly, they are in servers where 
scheduling downtime is painful, and involves unpaid overtime for me 
(salaried). Having a server fail in the middle of production due to a 
dying hard drive is not good career-wise. Again, a whiff of problems and 
I replace. Since these are hot plugable in a raid, I don't have to do 
unpaid overtime. Things just get a little slow while the raid rebuilds.

If the drives are personal and you have multiple backups, then I might 
let a few more errors go, especially if it is stable.

On 8/2/2016 1:59 AM, Gandalf Corvotempesta wrote:
>
> Il 01 ago 2016 22:33, "Tim Small" <ti...@se... 
> <mailto:ti...@se...>> ha scritto:
> > Although it's relatively rare, I've had drives which have been happily
> > operating for years with a reallocated sector count of a few tens,
> > without any further problems.  I've put these down to a one-off event or
> > very localised manufacturing defect within the drive.
>
> Currently i have a sas drive with grown list set to 16 from some 
> months ago.
> everything else seems to be stable. Would you replace this drive with 
> 16, stable,  bad sectors?
>
> with sata disk i have some drives with 3 or 4 logged errors 4 years 
> ago and nothing more after that. Would you replace?
>
> I also have a sata disk with raw read error rate set to 84, smart long 
> test running weekly doesn't catch any issue and is able to run 
> properly every time.
> No reallocation or bad sectors, only this 84 raw read error rate.
> Raid controller osd able to run weekly consistency check and patrol 
> reads (it will read the whole raid looking for bad sectors) with no 
> issue at all.
> Would you replace this disk?
>
>
>
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