Good day,
I have purchased 2 used SAS drives off ebay. And I also got another drive from someone who, by accident, ordered a wrong drive from a clearance sale, and could not return it, so this particular drive was even brand new. Now I have installed the drives into my server, and I see the following numbers. I am curious about what others think of these; are the drives good or did I buy rubbish?
First the two ebay drives. Drive #1:
and ebay drive #2:
I see that both ebay drives have a really high amount of data read, in the PB range, and still surprisingly low number of ECC errors. Also the number of power cycles is very low. Considering the large amount of data that was read from these drives, I would say the error counter looks good, does it?
Now the 3rd drive that I got from another auction platform:
I am quite sure this is true, as the drive was delivered in a original Toshiba box, with all seals intact, as the guy who bought it got it from a clearance sale and could therefore not return it. When I plugged the drive into my server yesterday, I saw zero minutes power on time, and zero for both the read and write data counter, so it is a true virgin drive, I would say.
However, what irritates me a bit is, that only from the resilvering of my ZFS pool, the drive had to read 1.5TB and already has its error counter go up to 3. Still, no unrecoverable errors so far, but this looks a bit surprising compared to the other two drives, doesn't it?
Would you say something with these drives is fishy, or is this just a pure coincidence and the drives are totally fine.?
I am also curious how is it possible that there are 3 ECC errors corrected, but the total number of errors corrected is 0?
For instance, one of my drives that is currently being used looks like so:
And I will actually replace this particular drive with the brand new one. But I am now a bit curious if this is a smart move
by the way, if you wonder about the large number of SMART tests. I do once a week a short SMART test. And every first sunday of the month, I do a long test. For this reason the SMART logs of my drives are always a bit densely populated.
I have purchased 2 used SAS drives off ebay. And I also got another drive from someone who, by accident, ordered a wrong drive from a clearance sale, and could not return it, so this particular drive was even brand new. Now I have installed the drives into my server, and I see the following numbers. I am curious about what others think of these; are the drives good or did I buy rubbish?
First the two ebay drives. Drive #1:
Code:
=== START OF INFORMATION SECTION ===
Vendor: TOSHIBA
Product: MG07SCA14TE
Revision: 0102
Compliance: SPC-4
User Capacity: 14,000,519,643,136 bytes [14.0 TB]
Logical block size: 512 bytes
Physical block size: 4096 bytes
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device type: disk
Transport protocol: SAS (SPL-4)
Local Time is: Tue Oct 29 13:53:54 2024 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
Temperature Warning: Disabled or Not Supported
=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK
Current Drive Temperature: 33 C
Drive Trip Temperature: 65 C
Accumulated power on time, hours:minutes 39068:34
Manufactured in week 16 of year 2019
Specified cycle count over device lifetime: 50000
Accumulated start-stop cycles: 24
Specified load-unload count over device lifetime: 600000
Accumulated load-unload cycles: 24
Elements in grown defect list: 0
Error counter log:
Errors Corrected by Total Correction Gigabytes Total
ECC rereads/ errors algorithm processed uncorrected
fast | delayed rewrites corrected invocations [10^9 bytes] errors
read: 0 0 0 0 0 8204573.602 0
write: 0 50 0 0 0 44336.119 0
verify: 0 383 0 0 0 3192191.502 0
Non-medium error count: 0
SMART Self-test log
Num Test Status segment LifeTime LBA_first_err [SK ASC ASQ]
Description number (hours)
# 1 Background short Completed - 38983 - [- - -]
# 2 Background short Completed - 38815 - [- - -]
# 3 Background long Completed - 38792 - [- - -]
# 4 Background short Completed - 38650 - [- - -]
# 5 Background long Completed - 38622 - [- - -]
# 6 Background short Completed - 38592 - [- - -]
Long (extended) Self-test duration: 88200 seconds [24.5 hours]
Code:
=== START OF INFORMATION SECTION ===
Vendor: TOSHIBA
Product: MG07SCA14TE
Revision: 0102
Compliance: SPC-4
User Capacity: 14,000,519,643,136 bytes [14.0 TB]
Logical block size: 512 bytes
Physical block size: 4096 bytes
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device type: disk
Transport protocol: SAS (SPL-4)
Local Time is: Tue Oct 29 13:54:29 2024 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
Temperature Warning: Disabled or Not Supported
=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK
Current Drive Temperature: 37 C
Drive Trip Temperature: 65 C
Accumulated power on time, hours:minutes 38963:44
Manufactured in week 09 of year 2019
Specified cycle count over device lifetime: 50000
Accumulated start-stop cycles: 23
Specified load-unload count over device lifetime: 600000
Accumulated load-unload cycles: 23
Elements in grown defect list: 0
Error counter log:
Errors Corrected by Total Correction Gigabytes Total
ECC rereads/ errors algorithm processed uncorrected
fast | delayed rewrites corrected invocations [10^9 bytes] errors
read: 0 1 0 0 0 8230010.946 0
write: 0 1 0 0 0 47405.032 0
verify: 0 8 0 0 0 3206171.364 0
Non-medium error count: 0
SMART Self-test log
Num Test Status segment LifeTime LBA_first_err [SK ASC ASQ]
Description number (hours)
# 1 Background short Completed - 38878 - [- - -]
# 2 Background short Completed - 38710 - [- - -]
# 3 Background long Completed - 38688 - [- - -]
# 4 Background short Completed - 38658 - [- - -]
Long (extended) Self-test duration: 88200 seconds [24.5 hours]
Now the 3rd drive that I got from another auction platform:
Code:
=== START OF INFORMATION SECTION ===
Vendor: TOSHIBA
Product: MG08SCA16TE
Revision: 0105
Compliance: SPC-4
User Capacity: 16,000,900,661,248 bytes [16.0 TB]
Logical block size: 512 bytes
Physical block size: 4096 bytes
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device type: disk
Transport protocol: SAS (SPL-4)
Local Time is: Tue Oct 29 13:56:25 2024 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
Temperature Warning: Disabled or Not Supported
=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK
Current Drive Temperature: 39 C
Drive Trip Temperature: 65 C
Accumulated power on time, hours:minutes 19:14
Manufactured in week 09 of year 2023
Specified cycle count over device lifetime: 50000
Accumulated start-stop cycles: 1
Specified load-unload count over device lifetime: 600000
Accumulated load-unload cycles: 1
Elements in grown defect list: 0
Error counter log:
Errors Corrected by Total Correction Gigabytes Total
ECC rereads/ errors algorithm processed uncorrected
fast | delayed rewrites corrected invocations [10^9 bytes] errors
read: 0 3 0 0 0 1492.807 0
write: 0 0 0 0 0 12660.666 0
Non-medium error count: 0
SMART Self-test log
Num Test Status segment LifeTime LBA_first_err [SK ASC ASQ]
Description number (hours)
# 1 Background short Completed - 17 - [- - -]
Long (extended) Self-test duration: 91860 seconds [25.5 hours]
However, what irritates me a bit is, that only from the resilvering of my ZFS pool, the drive had to read 1.5TB and already has its error counter go up to 3. Still, no unrecoverable errors so far, but this looks a bit surprising compared to the other two drives, doesn't it?
Would you say something with these drives is fishy, or is this just a pure coincidence and the drives are totally fine.?
I am also curious how is it possible that there are 3 ECC errors corrected, but the total number of errors corrected is 0?
For instance, one of my drives that is currently being used looks like so:
Code:
=== START OF INFORMATION SECTION ===
Vendor: WDC
Product: WUH721414AL5204
Revision: C400
Compliance: SPC-4
User Capacity: 14,000,519,643,136 bytes [14.0 TB]
Logical block size: 4096 bytes
LU is fully provisioned
Rotation Rate: 7200 rpm
Form Factor: 3.5 inches
Device type: disk
Transport protocol: SAS (SPL-4)
Local Time is: Tue Oct 29 14:02:33 2024 CET
SMART support is: Available - device has SMART capability.
SMART support is: Enabled
Temperature Warning: Enabled
=== START OF READ SMART DATA SECTION ===
SMART Health Status: OK
Grown defects during certification = 0
Total blocks reassigned during format = 0
Total new blocks reassigned = 0
Power on minutes since format = 89274
Current Drive Temperature: 43 C
Drive Trip Temperature: 85 C
Accumulated power on time, hours:minutes 40165:53
Manufactured in week 21 of year 2019
Specified cycle count over device lifetime: 50000
Accumulated start-stop cycles: 16
Specified load-unload count over device lifetime: 600000
Accumulated load-unload cycles: 1843
Elements in grown defect list: 0
Error counter log:
Errors Corrected by Total Correction Gigabytes Total
ECC rereads/ errors algorithm processed uncorrected
fast | delayed rewrites corrected invocations [10^9 bytes] errors
read: 0 1 0 1 383816 77746.099 0
write: 0 22 0 22 1106 15849.924 0
verify: 0 0 0 0 1 0.000 0
Non-medium error count: 0
SMART Self-test log
Num Test Status segment LifeTime LBA_first_err [SK ASC ASQ]
Description number (hours)
# 1 Background short Completed - 40080 - [- - -]
# 2 Background short Completed - 39912 - [- - -]
# 3 Background short Completed - 39747 - [- - -]
# 4 Background long Completed - 39600 - [- - -]
# 5 Background short Completed - 39411 - [- - -]
# 6 Background short Completed - 39242 - [- - -]
# 7 Background short Completed - 39075 - [- - -]
# 8 Background long Completed - 38935 - [- - -]
# 9 Background short Completed - 38742 - [- - -]
#10 Background short Completed - 38721 - [- - -]
#11 Background short Completed - 38574 - [- - -]
#12 Background short Completed - 38435 - [- - -]
#13 Background short Completed - 38267 - [- - -]
#14 Background long Completed - 38120 - [- - -]
#15 Background short Completed - 37931 - [- - -]
#16 Background short Completed - 37763 - [- - -]
#17 Background short Completed - 37595 - [- - -]
#18 Background short Completed - 37500 - [- - -]
#19 Background short Completed - 37484 - [- - -]
#20 Background short Completed - 37476 - [- - -]
Long (extended) Self-test duration: 91620 seconds [25.4 hours]
by the way, if you wonder about the large number of SMART tests. I do once a week a short SMART test. And every first sunday of the month, I do a long test. For this reason the SMART logs of my drives are always a bit densely populated.