Hitachi Ultrastar 15K147 SCSI Hard Disk Drive Specification
64
17.4.1 Defect list
Following is the format of the Dlist Header sent during the data out phase when FmtData is set to one.
Table 33: Format of Defect List Header
The Target has a limited implementation of the Format Option bits located in Bits 2 through 7 of Byte 1 in the Dlist Header. If
the Initiator attempts to select any function not implemented by the Target, the Target terminates the command with
Check
Condition
status. The sense key is set to
Illegal Request
and the additional sense code is set to
Invalid Field in Parameter List
.
•
FOV
(Format Options Valid) bit set to zero causes the Target to verify that the setting for the DPRY (Disable Primary),
DCRT (Disable Certification), STPF (Stop Format), IP (Initialize Pattern), and DSP (Disable Saving Parameters) bits
are zero. If any of these bits are not zero, the Target terminates the command with
Check Condition
status. The sense
key is set to
Illegal Request
and the additional sense code is set to
Invalid Field in Parameter List
.
Note:
When the FOV bit is one, six combinations of the DPRY, DCRT, STPF, IP and DSP bits are allowed. Any
other combinations return a
Check Condition
status with a sense key of
Illegal Request
and an additional
sense code of
Invalid Field in Parameter List
. The supported combinations are:
DPRY=0 DCRT=1 STPF=1 IP=0 DSP=0
DPRY=1 DCRT=1 STPF=1 IP=0 DSP=0
DPRY=0 DCRT=0 STPF=1 IP=0 DSP=0
DPRY=0 DCRT=1 STPF=1 IP=0 DSP=1
DPRY=1 DCRT=1 STPF=1 IP=0 DSP=1
DPRY=0 DCRT=0 STPF=1 IP=0 DSP=1
•
DPRY
(Disable Primary) bit set to zero indicates that the Target does not use portions of the medium identified as defec-
tive in the primary defect Plist for Initiator addressable logical blocks. If the Target cannot locate the Plist or it cannot
determine whether a Plist exists, theTarget terminates the FORMAT UNIT command as described for STPF=1. A
DPRY bit set to one indicates that the Target does not use the Plist to identify defective areas of the medium. The Plist
is not deleted.
•
DCRT
(Disable Certification) bit set to zero indicates that the Target performs a medium certification operation and gen-
erates a Certification List (Clist) and the Target adds the Clist to the Glist. A DCRT bit of one indicates that the Target
does not generate a Clist nor perform a certification process.
Note:
Since the DCRT bit is part of the Data Out phase that follows the FORMAT command, the FCERT bit in
Mode Page 0 is provided to control certification when the FORMAT command is issued with no Data Out
phase. If a FORMAT command is issued with a Data Out phase then FCERT is ignored.
•
STPF
(Stop Format) bit must be set to one. If one or both of the following conditions occurs, the Target terminates the
FORMAT UNIT command with
Check Condition
status. The sense key is set to
Medium Error
and the additional
sense code is set to
Defect List Not Found
if the first condition occurred or to
Defect List Error
if the second condi-
tion occurred.
• The Target cannot locate a required Dlist nor determine that the list exists.
•The Target encounters an unrecoverable error while accessing a required Dlist.
Byte
BIT
7
6
5
4
3
2
1
0
0
Reserved = 0
1
FOV
DPRY
DCRT
STPF=1
IP = 0
DSP
Immed
Ignored
2
3
(MSB)
Defect List Length
(LSB)
Содержание HUS151414VL3600
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