Decoding smart on adaptec?

Question

RAID

There is an adaptec 8805 controller, a raid 10 array is assembled on it. The 1c mssql base is spinning on the array, 1c has recently begun to slow down. Delivered maxview storage manager for array diagnostics.
There are several parameters of interest in smart, these are:
Read Errors Corrected By ECC Delayed
Read Error Correction Algorithms Invocations
Write Error Correction Algorithms Invocations
on one sas disk, the Read Errors Corrected By ECC Delayed value reaches 800.