Models: DGHS-39110 and DGHS-318200

Certain parameters are alterable using the SCSI mode slect command. This allows certain drive characteristics to be modified to optimize performance on the paticular system. Refer to the Ultrastar 9LP/18XP interface specifications for a detailed definition of mode select parameters. The changeable parameters are:

Page 0 - Vendor unique parameters

QPE - Qualify posted errors

DWD - Disable write disconnect

ASDPE - Additional save data pointer enable

CMDAC - LED active

RPFAE - Report predictive failure analysis Error bit

DOTF - Disable ECC on the fly

RRNDE - Report recovered non data errors

CPE - Concurrent processing enable bit

DLRO - Disable latency reduction optimization

TCC - Track compensation

DSN - Disable target initiated synchronous negotiation

FRDD - Format and reassign degraded disable

DPSDP - Data phase save data pointer

CAEN - Command age

LITF - Idle time function

ADC - Adaptive cache enable

QEMC - Queue error management control

DRD - Disable read disconnect

LED - LED control

DRRT - Disable read reassign target

DUASS - Disable unit attention on spindle sync

RARRED - Report automatic/recommend rewrite/ reallocate disabled

FFMT - Fast format enable

VMC - Video mode configure

RTP - Reassign target padd

RRC - Read retry count

FCERT - Format certification

RCPF - Report component PFAGEM failures

DRPDV - Disable reassign blocks post move verify

DSF - Discard surface analysis results
 

Page 1 - Error recovery parameters

AWRE - Automatic write reallocation enable

ARRE - Automatic eead reallocation enable

TB - Transfer block

RC - Read continuous

PER - Post error

DTE - Disable transfer on error

DCR - Disable correction

Read retry count

Correction span

Head offset count

Data strobe offset count

Write retry count

Recovery time limit
 

Page 2 - Disconnect/reconnect parameters

Read buffer full ratio

Write buffer empty ratio

Bus inactivity limit

Disconnect time limit

Connect time limit

Maximum burst size

DTDC - Data transfer disconnect control

DIMM - Disconnect immediate
 

Page 4h - Rigid disk drive geometry parameters

RPL - Rotational position locking

Rotational offset
 

Page 7h - Error recovery parameters for verify

PER

DCR

Verify correction span

Verify retry count

Verify recovery time limit
 

Page 8h - Caching parameters

WCE - Write cache enable

MF - Multiplication factor

RCD - Read cache disable

Demand read retention priority

Write retention priority

Disable pre-fetch transfer length

Minimum pre-fetch

Maximum pre-fetch

Maximum pre-fetch ceiling

Number of cache segments
 

Page 0Ah - Control mode parameters

RLEC - Report log exception condition

Queue algorithm modifier

QErr - Queue error management

DQue - Disable queuing

EECA - Enable extended contingent allegiance
 

Page 0Ch - Notch parameters

Active notch