Hard Disk Monitoring

Hi all,

First thank you for hard work sharing that great tool. I am using the linux version of the tool and analyzing some ssd drives I have obtained these results:

Hard Disk Number : 0
Hard Disk Device : /dev/sg6
Interface : SCSI
Hard Disk Model ID : SanDisk DOPE1920S5xnNMRI
Firmware Revision : 3P0B
Hard Disk Serial Number : 0005515D3P0B3P0B6A40
Total Size : 1831420 MB
Current Temperature : 38 °C (100 °F)
Maximum Temperature (during Entire Lifespan) : 38 °C (100 °F)
Power On Time : 2065 days, 19 hours, 20 minutes (estimated)
Estimated Remaining Lifetime : 92 days
Lifetime Writes : 1.36 GB
Health : 92 % (Excellent)
Performance : 100 % (Excellent)

Hard Disk Number : 0
Hard Disk Device : /dev/sg79
Interface : SCSI
Hard Disk Model ID : SanDisk DOPE1920S5xnNMRI
Firmware Revision : 3P0B
Hard Disk Serial Number : 000472EE3P0B3P0B6A40
Total Size : 1831420 MB
Current Temperature : 41 °C (106 °F)
Maximum Temperature (during Entire Lifespan) : 41 °C (106 °F)
Power On Time : 2066 days, 17 hours, 42 minutes (estimated)
Estimated Remaining Lifetime : 91 days
Lifetime Writes : 2.46 GB
Health : 91 % (Excellent)
Performance : 100 % (Excellent)

Hard Disk Number : 0
Hard Disk Device : /dev/sg10
Interface : SCSI
Hard Disk Model ID : SanDisk DDYE1920S5xnNMRI
Firmware Revision : 3P03
Hard Disk Serial Number : A0417CB13P03P00E73F0
Total Size : 1831420 MB
Current Temperature : 43 °C (109 °F)
Maximum Temperature (during Entire Lifespan) : 43 °C (109 °F)
Power On Time : 824 days, 1 hours, 24 minutes (estimated)
Estimated Remaining Lifetime : more than 961 days
Lifetime Writes : 303.28 TB
Health : 98 % (Excellent)
Performance : 100 % (Excellent)

All drives are perfect but the health is not 100%. That depends of Power On Time? Why 2 drives with same power on time have differente health %.

Regards,

Thanks for your message.

In general, it is completely normal and expected that the Health of the SSD is lower than 100% due to wearout.
Please refer to:

https://www.hdsentinel.com/kb/category/16/solid-state-drives-ssds/why-my-ssd-shows-98-health-if-no-problems-reported.html

which explains the situation.
The text description (I do not see) usually confirms that.

Most newer SSDs internally calculate a such wear level based on the usage. Not only the power on time, but the amount of written data is more important. However, updating lots of smaller files /single sectors can cause much more wear than saving some larger files.

If you save a report file with -r command line switch and send to info (at) hdsentinel (dot) com address, I can see the complete status of the SSDs.
This may help to check/verify the situation because the Linux version may require update for some models.