Usually, if there's a cable problem SMART stat 199 (UDMA CRC errors) increments. Your count is zero. (Of course, nothing is written in stone.)
The stat's that tend to indicate a future drive failure, in your case, look OK. (As follows)
SMART 5 – Reallocated_Sector_Count.
SMART 187 – Reported_Uncorrectable_Errors.
SMART 188 – Command_Timeout.
SMART 197 – Current_Pending_Sector_Count.
SMART 198 – Offline_Uncorrectable.
The two bursts of errors, at specific LBA locations, are interesting because they didn't trigger reallocated or pending sectors.
On the other hand, SMART stat 200 is of concern:
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(From Wikipedia)
SMART 200 Multi-Zone Error Rate The count of errors found when writing a sector. The higher the value, the worse the disk's mechanical condition is.
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Since you've backed up the data, the next thing I would do is a Long SMART test. That will scan the platters for defects. But, note, a LONG test might push the disk over the edge.
You could swap cables with another drive but if you're using hardware RAID that could cause an array problem.
If it was my server; considering the disk's powered on age (about 6 1/2 years) the event's you've noted and the errors presented, I'd order a replacement.