Seagate Fibre Channel Interface User Manual
Page 232
218
Fibre Channel Interface Manual, Rev. D
12.13.2
Error Recovery page (01h)
The disc drive Error Recovery page implementation is defined in Table 147. This table summarizes the function
and default for each byte/bit.
See individual drive’s Product Manual, Volume 1, section showing changeable values. A value of zero (0)
means this bit function is not directly changeable by an initiator; a value of 1 means the bit function is directly
changeable by an initiator (see Mode Select command).
Field definitions (listed alphabetically)
ARRE (Automatic Read Reallocation of defective data blocks Enabled)
1
Allows the disc drive to automatically reallocate bad blocks detected during read operations. Automatic reallocation
is performed only if the drive successfully recovers the data and is able to place it in the reallocated block.
0
The disc drive will not perform automatic reallocation but will create Check Condition status with sense key of
Medium Error instead.
AWRE (Automatic Write Reallocation of defective data blocks Enabled)
1
Allows the disc drive to automatically reallocate bad blocks detected during write operations. The drive performs the
automatic write reallocation only if the drive has the valid data (e.g., original data in the buffer or recovered from the
medium). The valid data is placed in the reallocated block. This function doesn’t apply to the Format Unit command.
0
The disc drive will not perform automatic reallocation but will create Check Condition status with sense key of
Medium Error instead.
Table 147: Error Recovery page (01h)
Bit
Byte
7
6
5
4
3
2
1
0
Page descriptor header
0
1
0
0
0
0
0
0
1
PS
Page Code (01h)
1
Page Length (0Ah bytes)
Error recovery parameters
2
Default
AWRE
ARRE
TB
RC
EER
PER
DTE
DCR
3
Default
Read Retry Count
4
Default
Correction Span (bits)
5
Default
Head Offset Count
6
Default
Data Strobe Offset Count
7
Default
Reserved
8
Default
Write Retry Count
9
Default
Reserved
10
(MSB)
Recovery Time Limit
11
(LSB)
Table
number