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Fibre Channel Interface Manual, Rev. D 145
11.5.1 Extended Sense Data format
The drive is capable of sending 18 bytes of extended sense data. The Extended Sense Data format is summa-
rized in Table 87. The 1s and 0s shown in the tables below represent the logical 1s and 0s as sent by the disc
drive.
*Fibre Channel frame byte number shown in parenthesis.
Field definitions (listed alphabetically)
Note. If the Sense Key, Additional Sense Code and Additional Sense Code Qualifier combination is 04/8086 (a Read
IOEDC error, see Tables 92 and 93), bytes 14-17 are the four IOEDC words associated with the IOEDC error.
Additional Sense Code and Additional Sense Code Qualifier
Provide additional clarification of errors when Sense Key is valid. Error code definitions are in Table 93. If the condition is
not reportable by the disc drive, the Additional Sense Code and Additional Sense Code Qualifier are set to No Additional
Sense Information (Code 0000).
Table 87: Disc Drive Extended Sense Data Summary
Bit
Byte
(*)
76543210
0
(32)
Validity Bit
1110000
1110001
Error Code
1
(33)
00000000
Segment Number
2
(34)
0
Filemark
0
EOM
0
ILI
0
Sense Key
3
(35)
(MSB)
Information
4 (36)
5 (37)
6 (38)
(LSB)
7 (39) Additional Sense Length 10 decimal (Max)
8
(40)
(MSB)
Command Specific Data
9 (41)
10 (42)
11 (43)
(LSB)
12 (44) Additional Sense Code (ASC)
13
(45) Additional Sense Code Qualifier (ASCQ)
14
(46) Reserved for Seagate internal use only
15
(47)
SKSV
Sense Key Specific
16 (48)
17 (49)
18-n
(50-n)
Product Unique Sense Data
Table
number
87