On 11/24/2012 05:39 PM, Robert Nichols wrote:
On 11/24/2012 09:36 AM, JD wrote:
=== START OF READ SMART DATA SECTION ===
SMART overall-health self-assessment test result: PASSED
Yet, running smartctl -x shows a few pre-failure
values. To wit:
1 Raw_Read_Error_Rate POSR-- 117 099 006 - 131606848
5 Reallocated_Sector_Ct PO--CK 100 100 036 - 3
7 Seek_Error_Rate POSR-- 083 060 030 - 209089036
10 Spin_Retry_Count PO--C- 100 100 097 - 0
No, nothing there is indicating a risk of imminent failure. That
"Pre-fail" label is just telling you what it would mean if there were
something other than "-" in the "WHEN_FAILED" column. The only thing
there that is at all indicative of something bad happening is the three
reallocated sectors, and that's only a problem if that number continues
to grow. (Vibration or electrical disturbances can cause a sector or two
to get marked as bad, and that doesn't mean that the drive is in danger
of catastrophic failure.) An attribute of interest that you didn't
report is #197, "Current Pending Sector". That would indicate sectors
that are currently unreadable and will be reallocated the next time they
are written. Any such sectors would cause an I/O error if the OS should
attempt to read them.
Here are the values for #197
ID# ATTRIBUTE_NAME FLAGS VALUE WORST THRESH FAIL RAW_VALUE
For sdb:
1 Raw_Read_Error_Rate POSR-- 117 099 006 - 131606848
197 Current_Pending_Sector -O--C- 100 100 000 - 0
For sdc:
1 Raw_Read_Error_Rate POSR-- 114 069 006 - 80733495
197 Current_Pending_Sector -O--C- 100 100 000 - 0
If the raw read error values are so high, and the normalized values
for raw read error rate exceeds worst case value, does that mean the
drive dying or near death?
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