IBM IC35L036UWDY10 Hard Drive Specifications - Page 103

LED Mode = 4h: Command Active/Degraded Mode, Temperature Threshold, Command Aging Limit

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- LED Mode = 0h: CMDAC determines the behavior of LED. CMDAC is one: Command Active CMDAC is zero: Motor Active - LED Mode = 1h: Motor Active - LED Mode = 2h: Command Active - LED Mode = 3h: Degraded Mode - LED Mode = 4h: Command Active/Degraded Mode - LED Mode = other: Motor Active ! Temperature Threshold specifies the threshold value in degrees Celsius for the SMART warning for temperature. A value of 0 selects the default value (85 degrees Celsius). ! Command Aging Limit controls the maximum time that a command should wait in the command queue when the CAEN bit is set. Each unit of this timer is 50 ms. ! QPE Read Threshold specifies the additional ERP steps in addition to the default ERP steps before reporting recovered errors for read operations when QPE and PER (Mode Page 1) are set to one. The verify operations also use QPE Read Threshold. ! QPE Write Threshold specifies the additional ERP steps in addition to the default ERP steps before reporting recovered errors for write operations when QPE, PER (Mode Page 1) and RRNDE are set to one. ! DRRT (Disable Restore Reassign Target) of one disables the reading and restoration of the drive LBA during a REASSIGN BLOCKS command. If DRRT is zero, the REASSIGN BLOCKS command attempts to restore the drive LBAs data for reassignment. If the data cannot be restored, a data pattern of all 00's is used. ! FFMT (Fast Format Enable) of one allows the formatting of the drive without writing to the customer data area. All format operations are allowed including changing block sizes and manipulating defects. Fast Format operation assumes an data initialization is done later. Read operation without the data initialization may cause unrecoverable read errors. ! FCERT (Format Certification) of one specifies the certification will be performed during a FORMAT UNIT command. A FCERT of zero disables the certification. ! IRT (Integration Reassign Threshold) of one specifies the use of lower thresholds for reporting recovered errors and auto reallocation for READ and WRITE commands for the manufacturing test phase of system. When IRT is set to zero, the default thresholds are used. ! IVR (Integration Verify Recovery) of one specifies the use of lower thresholds for reporting recovered errors for VERIFY commands for the manufacturing test phase of system. When IVR is set to zero, the default threshold is used. Ultrastar 146Z10 hard disk drive specifications 87

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- LED Mode = 0h: CMDAC determines the behavior of LED.
CMDAC is one: Command Active
CMDAC is zero: Motor Active
- LED Mode = 1h: Motor Active
- LED Mode = 2h: Command Active
- LED Mode = 3h: Degraded Mode
- LED Mode = 4h: Command Active/Degraded Mode
- LED Mode = other: Motor Active
!
Temperature Threshold
specifies the threshold value in degrees Celsius for the SMART warning for
temperature.
A value of 0 selects the default value (85 degrees Celsius).
!
Command Aging Limit
controls the maximum time that a command should wait in the command
queue when the CAEN bit is set. Each unit of this timer is 50 ms.
!
QPE Read Threshold
specifies the additional ERP steps in addition to the default ERP steps before
reporting recovered errors for read operations when QPE and PER (Mode Page 1) are set to one. The
verify operations also use QPE Read Threshold.
!
QPE Write Threshold
specifies the additional ERP steps in addition to the default ERP steps before
reporting recovered errors for write operations when QPE, PER (Mode Page 1) and RRNDE are set to
one.
!
DRRT
(Disable Restore Reassign Target) of one disables the reading and restoration of the drive LBA
during a REASSIGN BLOCKS command. If DRRT is zero, the REASSIGN BLOCKS command at-
tempts to restore the drive LBAs data for reassignment. If the data cannot be restored, a data pattern
of all 00's is used.
!
FFMT
(Fast Format Enable) of one allows the formatting of the drive without writing to the customer
data area. All format operations are allowed including changing block sizes and manipulating defects.
Fast Format operation assumes an data initialization is done later. Read operation without the data
initialization may cause unrecoverable read errors.
!
FCERT
(Format Certification) of one specifies the certification will be performed during a FORMAT
UNIT command. A FCERT of zero disables the certification.
!
IRT
(Integration Reassign Threshold) of one specifies the use of lower thresholds for reporting recov-
ered errors and auto reallocation for READ and WRITE commands for the manufacturing test phase
of system. When IRT is set to zero, the default thresholds are used.
!
IVR
(Integration Verify Recovery) of one specifies the use of lower thresholds for reporting recovered
errors for VERIFY commands for the manufacturing test phase of system. When IVR is set to zero,
the default threshold is used.
Ultrastar 146Z10 hard disk drive specifications
87