Hitachi HDT725025VLA380 Specifications - Page 249
S.M.A.R.T. Log Directory, S.M.A.R.T. summary error log sector
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12.42.4 S.M.A.R.T. Log Directory The following table defines the 512 bytes that make up the S.M.A.R.T. Log Directory. The S.M.A.R.T. Log Directory is S.M.A.R.T. Log Address zero and is defined as one sector long. Table 144: S.M.A.R.T. Log Directory Description Byte S.M.A.R.T. Logging Version 2 Number of sectors in the log at log address 1 1 Reserved 1 Number of sectors in the log at log address 2 1 Reserved 1 ... ... Number of sectors in the log at log address 255 1 Reserved 1 512 Offset 00h 02h 03h 04h 05h ... 1FEh 1FFH The value of the S.M.A.R.T. Logging Version word shall be 01h. The logs at log addresses 80-9Fh shall each be defined as 16 sectors long. 12.42.5 S.M.A.R.T. summary error log sector The following figure defines the 512 bytes that make up the SMART summary error log sector. All multibyte fields shown in this data structure follow the ATA/ATAPI-6 specifications for byte ordering. Table 145: S.M.A.R.T. summary error log sector Description S.M.A.R.T. error log version Error log pointer 1st error log data structure 2nd error log data structure 3rd error log data structure 4th error log data structure 5th error log data structure Device error count Reserved Data structure checksum Byte 1 1 90 90 90 90 90 2 57 1 512 Offset 00h 01h 02h 5Ch B6h 110h 16Ah 1C4h 1C6h 1FFh 12.42.5.1 S.M.A.R.T. error log version This value is set to 01h. 12.42.5.2 Error log pointer This points to the most recent error log data structure. Only values 1 through 5 are valid. 12.42.5.3 Device error count This field contains the total number of errors. The value will not roll over. Deskstar T7K500 Hard Disk Drive Specification 235