User Manual

SCSI Commands Reference Manual, Rev. J 152
www.seagate.com Direct Access Block commands (SPC-5 and SBC-4)
The error history directory list contains an error history directory entry (see table 115) for each supported buffer ID in the range of 00h to EFh. The
first entry shall be for buffer ID 00h and the entries shall be in order of ascending buffer IDs. The supported buffer IDs are not required to be
contiguous. There shall not be any entries for buffer IDs greater than or equal to F0h.
SUPPORTED BUFFER ID field
The SUPPORTED BUFFER ID field indicates the error history buffer ID associated with this entry.
BUFFER FORMAT field
If the SUPPORTED BUFFER ID field is set to 10h to EFh, the BUFFER FORMAT field (see table 116) indicates the format of the parameter data for
the error history buffer indicated by the SUPPORTED BUFFER ID field. If the SUPPORTED BUFFER ID field is not set to 10h to EFh, the BUFFER
FORMAT field should be ignored by the application client.
Table 115 Error history directory entry
Bit
Byte
7 6 5 4 3 2 1 0
0 SUPPORTED BUFFER ID
1 BUFFER FORMAT
2
Reserved BUFFER SOURCE
3
Reserved
4 (MSB)
MAXIMUM AVAILABLE LENGTH
. . .
7 (LSB)
Table 116 BUFFER FORMAT field
Code Description
Format
Reference
00h
Contains vendor specific data
01h
Contains current internal status parameter data see SPC-5
02h
Contains saved internal status parameter data see SPC-5
All others
Reserved