IBM Ultrastar 36LZX, Specifications

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8.8.2 Mode Page 0 (Vendor Unique Parameters)
00h IVR IRT Ignored FCERT Ignored 15
00h Ignored FFMT Ignored DRRT 14
0Ah QPE Write Threshold 13
0Ah QPE Read Threshold 12
30h Command Aging Limit (Low byte) 11
00h Command Aging Limit (Hi byte) 10
00h Temperature 9
40h LED Mode Ignored ADC Ignore 8
00h Ignored 7
00h Ignored EQuiet Ignored AVERP IGRA 6
12h Ignored CAEN Ignored FDD Ignored 5
00h Ignored 4
21h CPE RRNDE Ignored CMDAC Ignored ASDPE 3
51h ARHES Ignored MRG UAI
Ignored
QPE 2
0Eh Page Length = 0Eh 1
80h Page Code = 00h RSVD=0 PS 0
0 1 2 3 4 5 6 7
Default
Bit
Byte
Figure 82. Vendor Unique Parameters - Page 0
Fields marked in the table as 'Ignored' are not used or checked by the drive. They will be initialized to
zero but may be set as desired for compatibility with older drives.
Ÿ
QPE (Qualify Post Error) bit allows the Initiator to inhibit the reporting of recovered data errors which
are recovered under Data Recovery Procedure (DRP) step. A QPE bit of zero causes the Target to
report all recovered data errors. A QPE bit of one causes the Target to report only those recovered
data errors which exceed the QPE threshold.
Ÿ
UAI (Unit Attention Inhibit) bit is not used during normal operation when the UAI jumper is removed
from the drive. It may however be changed by the user with no effects. If the UAI jumper is added to
the drive, then this bit controls the generation of unit attention conditions.
Ÿ
MRG (Merge G-List into P-List) bit is set to 1 for merging the Grown Defect List (G-List) entries into
the Primary Defect List (P-List) during Format Unit command.
Ÿ
ARHES (Automatic Reassign Hard Error Sites) bit of one indicates that the drive will automatically
reassign a hard read error. When the ARHES bit is active, the LBA with an unrecovered read error is
internally registered as a reassign candidate and, when the write command is received to the failing
LBA, the data is written and verified if the error still exists. If the error still occurs on the failing LBA,
it will be reassigned. If the error is cleared, the Target will remove the reassign candidate internally
for the previously failing LBA. ARHES bit of zero indicates the drive will not automatically recover a
Ultrastar 36LZX hard disk drive specifications
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