Bad sectors: how bad can it be
Michaël Grünewald
michaelgrunewald at yahoo.fr
Wed Oct 28 21:06:42 UTC 2009
Hello David,
thank you for your comments,
David N wrote:
> 2009/10/29 Michaël Grünewald <michaelgrunewald at yahoo.fr>:
>> === START OF READ SMART DATA SECTION ===
>> SMART Self-test log structure revision number 1
>> Num Test_Description Status Remaining LifeTime(hours)
>> LBA_of_first_error
>> # 1 Extended offline Completed without error 00% 458 -
>> # 2 Extended offline Aborted by host 70% 456
[...]
> If your smartctl says it has used up a spare block
> (Reallocated_Sector_Ct), replace the drive ASAP. The drives will tend
> to get more and more bad blocks after the the first one is found,
> usually because the head is damaging the disks or the head itself is
> damaged, or other reasons. If its under warranty they usually replace
> is, talk to the manufacturer before hand.
I have Reallocated_Sector_Ct=0 for the faulty drive. Where can I find a
key fo reading all the other exciting numbers listed under the banner
``SMART Attributes Data Structure revision number: 10
Vendor Specific SMART Attributes with Thresholds:'' ?
On the hard-drive I use for my backups, a SAMSUNG HD501LJ, all the
numbers I read looks fine to me, but I want to be sure. Thus it would be
nice have a key for the table that `smartctl -a /dev/ad6' outputs. My
two other drives, I use to store my OS and my data, are MAXTOR
STM3250820AS (I do not have a RAID setup, it just happens that I have
twin hard drives). They both have `Reallocated_Sector_Ct=0' but have
positive `Raw_Read_Error_Rate', `Seek_Error_Rate'. Additionally, the
faulty drive has positive
`Reported_incorrect=119',`Current_Pending_Sector=4294967295' and
`Offline_Uncorrectable=4294967295'.
As looking for hints on google leads to many threads discussing
hard-drive failures, I did not find what a pleasant description of the
signification of these numbers.
--
Kind regards,
Michaël
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