132
votes
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What does it mean when my new HDD reports errors at a time that shouldn't exist?
I think that your suspicion of "odometer tampering" is correct, and it is possible. The recorded errors are likely real and definitely worrisome because they indicate bad sectors upon reading. The ...
- 19.5k
63
votes
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Samsung SSD "Wear_Leveling_Count" meaning
Kingston describe this SMART attribute as follows:
Number of erase/program cycles per block on average. This attribute is
intended to be an indicator of imminent wear-out. Normalized Equation:
...
- 21.1k
39
votes
What do the current, worst, and threshold SMART values mean?
To clarify (since this is one of the top responses on Google for this question, but doesn't actually answer it very well, IMHO):
The "Current", "Worst", and "Threshold" ...
- 489
18
votes
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What do the current, worst, and threshold SMART values mean?
Why is Uncorrectable Sector Count being displayed as caution?
You need to look at the raw value (8) in this case. There have been 8 events.
The raw value of this attribute indicates the total number ...
- 155k
17
votes
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Do S.M.A.R.T. tests wear out the hard disk?
Yes, albeit marginally. Any action that results in mechanical motion is an action that is helping the system die. Hooray for Entropy. That which doesn't kill you only brings you closer to death....
...
- 35.4k
17
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How should I understand "Current Pending Sector Count" in CrystalDiskInfo reports?
What is Current Pending Sector Count and should I worry about it?
This is a "Potential indicator of imminent electromechanical failure" (row coloured pink in S.M.A.R.T.).
You should back up this ...
- 155k
13
votes
What do the current, worst, and threshold SMART values mean?
As concerns your first question, the three columns together tell you the status of an attribute.
Column "current" means the current value. Usually it is at 100 when everything is ok. Higher values ...
- 487
13
votes
Dell's message that my SSD harddrive is nearing end of life while CrystalDiskInfo says it's good. Who do I believe?
You may want to provide us with the SMART Details for the drive so we can look at different attributes. Based on the limited information presented I posit that the drive is OK, and Dell are being ...
- 69.6k
12
votes
SSD has SMART test PASSED but fails self-testing
Forget looking at traffic light type self-tests. You have been given a wealth of information (SMART figures) that you just need to evaluate. Manufacturers don't have an interest to show a negative ...
- 3,393
11
votes
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USB flash drives or SD cards with S.M.A.R.T
http://sg.danny.cz/scsi/smartmontools_scsi.html:
SMART never attained the status of "standard" and its original
documents have been withdrawn. Its catchy name lives on, especially on
vendors' ...
- 9,548
10
votes
SMART-Test never finishes
A variation on Ari's answer is to use watch, because the smartctl output may in fact be interesting to keep track of the status:
sudo watch -d -n 60 smartctl -a /dev/sdx
This will auto-update the ...
- 211
10
votes
How to test SSDs or NVMe for badblocks'?
In general, you shouldn't need to, beyond paying attention to what SMART is already telling you. The reason is that SSDs use wear leveling, so they have an advanced controller that already takes care ...
- 356
10
votes
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Percentage lifetime used on my SSD: 90%. Is that good or bad?
It means your drive has 90% "life" left.
After some additional research, I came across this Crucial.com article that mentions the following:
In regards to the attribute named “Percentage Lifetime ...
- 2,702
9
votes
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How do hard drive diagnostic tools know if a sector is bad?
Modern hard drives implement a system in firmware called SMART. This system collects statistics on the drive performance, and automatically avoids data loss by moving data away from bad sectors.
...
- 331
9
votes
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SSD suddenly becomes unreadable - how to diagnose?
So, after futilely trying more diagnostics[1] and a patched Linux kernel, the correct solution seems to have been a BIOS update.
Apparently, under older versions of the BIOS of my Lenovo x270, there ...
- 131
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votes
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Initial Testing of New Hard Drives in Linux
Most of the SMART monitoring tools will sound alerts themselves if it detects something going wrong, I think a couple to watch out for are "Current Pending Sectors" and maybe "Reallocated Sector Count"...
- 13.7k
8
votes
Dell's message that my SSD harddrive is nearing end of life while CrystalDiskInfo says it's good. Who do I believe?
Since some of the diagnostic tools report issues, and we don't have much insight in how they forecast disk failures or how accurate they are, personally I wouldn't bother too much about intrinsics of ...
- 181
7
votes
How do hard drive diagnostic tools know if a sector is bad?
I do not know ViVARD so this is a general answer.
SMART
SMART is a part of most modern drives. It registers when the hard drive sees a bad sector, when the seek or spin up time is more than normal. ...
- 4,679
7
votes
Accepted
Are few UDMA_CRC_Error_Count errors in an SSD an issue?
The good news is that the CRC errors you see are automatically and silently recovered from by the SATA controller.
Most often the issue is caused by a faulty, kinked, or poorly seated SATA cable/...
- 11.3k
7
votes
Why is the temperature so low and airflow temperature so high on my HD?
It is probably a bit late to answer this question, however I did not find a clear explanation about the temperature situation.
The current temperatures shown on your screenshot is 16°C, which is ...
- 81
7
votes
SMART check on external USB hard disk on macOS
If you read down that list, see how many have been tested to work on macOS… I can't find any.
It's generally accepted that you can't get SMART data over USB on Macs, because they don't provide SCSI ...
- 48.7k
6
votes
Samsung SSD "Wear_Leveling_Count" meaning
SMART reports a PREFAILED condition for my Samsung SM951 (AHCI) 128GB, reported in Linux as SAMSUNG MZHPV128HDGM-00000 (BXW2500Q).
But in my case I think it's a firmware bug of the drive,
because ...
- 61
6
votes
How to ignore a specific SMART error
you need change config /etc/smartd.conf
add arguments to you setting:
-t -I 197
It ignore attribute 197 - Pending Sectors
like this(Example):
/dev/ad0 -H -l error -l selftest -t -I 197
- 401
6
votes
Accepted
Is my HDD failing as SMART parameter (Reallocated Sector count) is very high(390K)
Short answer: Backup your data and replace the drive as soon as possible, it is failing
Long answer: Yes, you should be worried... The drive is failing, it may die as your reading this, or it could ...
- 6,448
6
votes
Accepted
Interpreting the Spin Retry Count S.M.A.R.T. attribute value for hard drives
Confusedly, high values for Current indicate good health,
while the Threshold value indicates the lower ceiling below which health
is to be considered as poor.
So usually the value of 100 means that ...
- 465k
6
votes
Accepted
How does the Percent_Lifetime_Remaining SMART attribute get calculated on a Crucial MX500 disk?
Traditionally, the "percent lifetime remaining" is the average erase count versus the actual flash "rated endurance". This implies that the MX500 has 1500 endurance flash, which is believable for TLC ...
- 76
6
votes
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What does the “raw value” of the spin-up time in SMART parameters actually mean?
Spin-up time is a weird parameter with weird values. Most manufacturers
treat it as optional and its values vary between them.
Usually, the values go backwards, as described below.
S.M.A.R.T. ...
- 465k
6
votes
Accepted
Do USB memory sticks and memory cards not have S.M.A.R.T. data on-board?
Yes, most SSDs and flash drives use the same basic data storage technology. However, the control technology are completely different. It is the controller which maintains and reports this S.M.A.R.T ...
- 2,644
6
votes
SSD has SMART test PASSED but fails self-testing
I'm not sure that gsmartcontrol really understands and reports
correctly all the SMART attributes, or that the disk firmware is
correctly reporting its SMART attributes.
The SMART attributes show some ...
- 465k
5
votes
SMART-Test never finishes
I tried the solution from Tobu, in my case the I kept finding the external USB drive in sleep mode regardless sometime after starting the test and interrupting it, it seems dd ended up reading from a ...
- 391
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