[mythtv-users] Needs second opinion, is my HD failing?

[John Drescher]

On Mon, Mar 9, 2009 at 6:55 AM, Ian Clark <mrrooster at gmail.com> wrote:
>
>
> 2009/1/29 Richard Shaw <hobbes1069 at gmail.com>
>>
>> I've been having some quirky issues lately and decided to take a look
>> at the SMART data for the disk. There seems to be a large count of
>> errors in some of the categories.
>
> [snip]
>>
>>  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail
>> Always       -       955
>
> I'd keep half an eye on this value. My root drive for my server started to
> list reallocated sectors, it stuck around the 10-20 mark for a year or 2 but
> then one day it started climbing fast, I noticed it as weird pauses when you
> tried to do something.
>
> I managed to recover the contents of the drive, but it was definitely about
> to die. Luckily I had another drive on hand from when one of my drives
> appeared to be failing, but wasn't in the end.
>

Good point. I have not thought of that before even though I manage
several hundred hard drives. I'd better start looking at that. At home
all of my spinning drives appear to be good. Looks like having a
(realloc sector) value other than 0 is not normal with seagate 7200.10
and 7200.11 drives.

jmd0 ~ # smartctl -a /dev/sda | grep -i 'Power_On\|Realloc'
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail
Always       -       9
  9 Power_On_Hours          0x0032   097   097   000    Old_age
Always       -       3077
jmd0 ~ # smartctl -a /dev/sdb | grep -i 'Power_On\|Realloc'
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail
Always       -       0
  9 Power_On_Hours          0x0032   083   083   000    Old_age
Always       -       15425
jmd0 ~ # smartctl -a /dev/sdc | grep -i 'Power_On\|Realloc'
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail
Always       -       0
  9 Power_On_Hours          0x0032   081   081   000    Old_age
Always       -       16729
jmd0 ~ # smartctl -a /dev/sdd | grep -i 'Power_On\|Realloc'
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail
Always       -       0
  9 Power_On_Hours          0x0032   099   099   000    Old_age
Always       -       1632
jmd0 ~ #

jmd1 john # smartctl -a /dev/sda | grep -i 'Power_On\|Realloc'
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail
Always       -       0
  9 Power_On_Hours          0x0032   083   083   000    Old_age
Always       -       15469
jmd1 john # smartctl -a /dev/sdb | grep -i 'Power_On\|Realloc'
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail
Always       -       0
  9 Power_On_Hours          0x0032   081   081   000    Old_age
Always       -       17043
jmd1 john # smartctl -a /dev/sdc | grep -i 'Power_On\|Realloc'
  5 Reallocated_Sector_Ct   0x0033   100   100   036    Pre-fail
Always       -       0
  9 Power_On_Hours          0x0032   096   096   000    Old_age
Always       -       3635

John