Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
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with the sense key set to ILLEGAL REQUEST, and the additional sense code set to INVALID FIELD IN
CDB.
Note: A specified length greater than 0x00FF will result in a Check Condition status being returned. A length that
results in log data being truncated will generate a Check Condition status.
Note: For page 0Fh, the maximum parameter list length supported is 4004h (4 bytes for the header and 100h bytes
for each of the 40h parameters that are supported). The Parameter List Length must be an integral of the
number of parameters plus the 4 byte header. (Ex: Parameter length =104h for one parameter, 204h for 2
parameters,... 4004h for all 40h parameters).
The drive allows updates to the current cumulative values only. A value of zero is acceptable and is not considered
an error.
The drive updates only pages 0Eh, the Start/Stop Cycle page and 0Fh, the Application Client page. For other pages
the parameters are ignored. If the data out buffer contains multiple pages then the application client should send the
pages in ascending order. If the data out buffer contains multiple log parameters within a page, all log parameters
within the page should be sent and they should be sent in ascending order by parameter code value. The drive shall
return Check Condition status if the application client sends pages out of order, parameter codes out of order or
missing parameter code. The sense key shall be set to Illegal Request and additional sense code set to Invalid Field
in Parameter List. If one or more fields of the CDB are not set correctly the command will be terminated with a Check
Condition status. The sense key shall be set to Illegal Request and additional sense code of Invalid Field in CDB. To
indicate that parameters have changed, the Target generates a unit attention condition for all Initiators except the
one that issued the LOG SELECT command.
The following list contains all individual page parameters (counters) that are set to their default value of zero by the
LOG SELECT command (when PCR=1).
- Page 02h parameters: (Counters for write errors)
- Write errors recovered without delay
- Write errors recovered with possible delays
- LBAs with write fault error
- Reserved=0
- Total errors recovered
- Number of times recovery invoked
- Total write byte count
- LBAs with hard error
- Page 03h parameters: (Counters for read errors)
- Read errors recovered without delay
- Read errors recovered with possible delays
- LBAs with LDPC detected error
- Reserved=0
- Total errors recovered
- Number of times recovery invoked
- Total read byte count
- LBAs with hard error.
- Page 05h parameters: (Counters for Verify Errors)
- Errors recovered without delay
- Errors recovered with possible delays
- LBAs with LDPC detected error
- Reserved=0