Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
174
19.10.3 Mode Page 01 (Read/Write Error Recovery Parameters)
Table 148: Mode Page 01 (Vendor Unique Parameters)
The Read-Write recovery parameters that will be used during any command that performs a read or write operation to the
medium are as follows:
•
AWRE
Automatic Write Reallocation Enabled bit, set to zero indicates that the drive shall not perform automatic reallo-
cation of defective data blocks during write operations. An AWRE bit set to one indicates that the drive shall perform
automatic reallocation of defective data blocks during write operations.
•
ARRE
Automatic Read Reallocation Enabled bit, set to zero indicates that the drive shall not perform automatic reallo-
cation of defective data blocks during read operations. ARRE bit set to one indicates that the drive shall perform
automatic reallocation of defective data blocks during read operations.
•
TB
Transfer Block bit, set to one indicates that a data block that is not recovered within the recovery limits specified
shall be transferred to the Initiator before
Check Condition
status is returned. A TB bit set to zero indicates that such
a data block shall not be transferred to the Initiator. Data blocks that can be recovered within the recovery limits are
always transferred regardless of the value of the bit.
•
RC
Read Continuous bit, set to one requests the Target to transfer the entire requested length of data without adding
delays that would increase or ensure data integrity. This implies that the Target may send erroneous data. This bit has
priority over all other error control bits (PER, DTE, DCR, TB). RC set to zero indicates normal interpretation of
PER, DTE, DCR, and TB values. The RC bit setting is used by the Target when reporting errors associated with the
transfer of the Initiator's data for the Read commands interpretation of PER, DTE, DCR, and TB values. The RC bit
applies only to READ commands.
Note:
The Target implementation of the RC option is to disable error detection of the data fields but continue normal
error detection and recovery for errors occurring in the servo field. If a servo field failure occurs, normal DRP could
result in considerable recovery action, including proceeding through all levels of DRP.
•
EER
an Enable Early Recovery bit,
must be set to zero
, indicating that the drive shall use an error recovery procedure
that minimizes the risk of misdetection or miscorrection during the data transfer. Data shall not be fabricated.
Byte
Bit
7
6
5
4
3
2
1
0
Default
0
PS
0
Page Code = 01h
81h
1
Page Length = 0Ah
0Ah
2
AWRE
ARRE
TB
RC
EER=0
PER
DTE
DCR
C0h
3
Read Retry Count
01h
4
Obsolete = 0
00h
5
Obsolete = 0
00h
6
Obsolete = 0
00h
7
Reserved
00h
8
Write Retry Count
01h
9
Reserved
00h
10
11
(MSB) Recovery Time Limit
(LSB)
00h
Содержание Ultrastar 15K450
Страница 18: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 2 ...
Страница 20: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 4 ...
Страница 22: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 6 ...
Страница 30: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 14 ...
Страница 32: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 16 ...
Страница 34: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 18 ...
Страница 44: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 28 ...
Страница 52: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 36 1 4 6 2 0 8 101 6 0 25 FRO NT LEFT 25 8 0 3 ...
Страница 60: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 44 ...
Страница 62: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 46 ...
Страница 65: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 49 Korea MIC Taiwan BSMI ...
Страница 66: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 50 ...
Страница 68: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 52 ...
Страница 118: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 102 ...
Страница 130: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 114 ...
Страница 180: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 164 ...
Страница 299: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 283 ...
Страница 322: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 306 ...
Страница 324: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 308 ...
Страница 387: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 371 ...
Страница 392: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 376 ...
Страница 416: ...Hitachi Ultrastar 15K450 FC AL Hard Disk Drive Specification 398 WRITE SAME 41 302 Z zero seeks 161 ...