iMac SSD errors - Anything to be concerned about?

[Feek]

Hi folks,

I've got a iMac (Retina 5K, 27-inch, 2017) with a 1Tb SSD and upon checking the SMART status, I noticed some errors.

=== START OF SMART DATA SECTION ===

SMART overall-health self-assessment test result: PASSED

SMART/Health Information (NVMe Log 0x02)
Critical Warning:                   0x00
Temperature:                        38 Celsius
Available Spare:                    100%
Available Spare Threshold:          10%
Percentage Used:                    7%
Data Units Read:                    3,213,239,940 [1.64 PB]
Data Units Written:                 399,737,327 [204 TB]
Host Read Commands:                 47,569,084,541
Host Write Commands:                7,227,947,052
Controller Busy Time:               36,923
Power Cycles:                       10,512
Power On Hours:                     8,524
Unsafe Shutdowns:                   185
Media and Data Integrity Errors:    0
Error Information Log Entries:      8


Error Information (NVMe Log 0x01, 16 of 64 entries)
Num   ErrCount  SQId   CmdId  Status  PELoc          LBA  NSID    VS
  0          8     0  0x0002  0x4004  0x028            0     0     -
  1          7     0  0x0002  0x4004  0x028            0     0     -
  2          6     0  0x0002  0x4004  0x028            0     0     -
  3          5     0  0x0002  0x4004  0x028            0     0     -
  4          4     0  0x0002  0x4004  0x028            0     0     -
  5          3     0  0x0002  0x4004  0x028            0     0     -
  6          2     0  0x0002  0x4004  0x028            0     0     -
  7          1     0  0x0002  0x4004  0x028            0     0     -

DriveDX reports that the last entry to be added to the error log was about six months ago.

The Percentage Used is only 7% which indicates it's got plenty of life left but the errors in the log do concern me a little. Is this anything I should be worried about? It's no longer my main computer, I got a Studio earlier this year but I still use this iMac every day.

Thanks.

 

[Nguyen Duc Hieu]

Hi folks,

I've got a iMac (Retina 5K, 27-inch, 2017) with a 1Tb SSD and upon checking the SMART status, I noticed some errors.

=== START OF SMART DATA SECTION ===

SMART overall-health self-assessment test result: PASSED

SMART/Health Information (NVMe Log 0x02)
Critical Warning:                   0x00
Temperature:                        38 Celsius
Available Spare:                    100%
Available Spare Threshold:          10%
Percentage Used:                    7%
Data Units Read:                    3,213,239,940 [1.64 PB]
Data Units Written:                 399,737,327 [204 TB]
Host Read Commands:                 47,569,084,541
Host Write Commands:                7,227,947,052
Controller Busy Time:               36,923
Power Cycles:                       10,512
Power On Hours:                     8,524
Unsafe Shutdowns:                   185
Media and Data Integrity Errors:    0
Error Information Log Entries:      8


Error Information (NVMe Log 0x01, 16 of 64 entries)
Num   ErrCount  SQId   CmdId  Status  PELoc          LBA  NSID    VS
  0          8     0  0x0002  0x4004  0x028            0     0     -
  1          7     0  0x0002  0x4004  0x028            0     0     -
  2          6     0  0x0002  0x4004  0x028            0     0     -
  3          5     0  0x0002  0x4004  0x028            0     0     -
  4          4     0  0x0002  0x4004  0x028            0     0     -
  5          3     0  0x0002  0x4004  0x028            0     0     -
  6          2     0  0x0002  0x4004  0x028            0     0     -
  7          1     0  0x0002  0x4004  0x028            0     0     -

DriveDX reports that the last entry to be added to the error log was about six months ago.

The Percentage Used is only 7% which indicates it's got plenty of life left but the errors in the log do concern me a little. Is this anything I should be worried about? It's no longer my main computer, I got a Studio earlier this year but I still use this iMac every day.

Thanks.

I am curious about the 10,512 times of power cycle, with 8,524 hours of power on.
Seem weird to me. 1 Power on/off per each hour of use? Is sleep/wake counted as 1 cycle?
How long have you been using the SSD?

 

[Feek]

I am curious

Those figures intrigued me as well.

For the first three years, My iMac was never switched off because it had a Drobo attached and on that Drobo was my media library which was shared out and used by family members.

I think you must be right, an SSD sleep/wake counts as one power cycle. 8,524 hours isn't even a year of continual running and it was on for a lot longer than that.