Seagate ST300MM0026 Savvio 10K.1 FC Product Manual - Page 27

Savvio FC Product Manual, Rev. D

21

The thermal monitor system generates a warning code of 01-0B01 when the temperature exceeds the speci-

fied limit in compliance with the SCSI standard. The drive temperature is reported in the FRU code field of

mode sense data. You can use this information to determine if the warning is due to the temperature exceeding

the drive threatening temperature or the user-specified temperature.

This feature is controlled by the Enable Warning (EWasc) bit, and the reporting mechanism is controlled by the

Method of Reporting Informational Exceptions field (MRIE) on the Informational Exceptions Control (IEC)

mode page (1Ch).

The current algorithm implements two temperature trip points. The first trip point is set at 68°C which is the

maximum temperature limit according to the drive specification. The second trip point is user-selectable using

the Log Select command. The reference temperature parameter in the temperature log page (see Table 1) can

be used to set this trip point. The default value for this drive is 68°C, however, you can set it to any value in the

range of 0 to 68°C. If you specify a temperature greater than 68°C in this field, the temperature is rounded

down to 68°C. A sense code is sent to the host to indicate the rounding of the parameter field.

When the first temperature trip point is exceeded, S.M.A.R.T. data is collected and a frame is saved to the disc.

5.2.6

Drive Self Test (DST)

Drive Self Test (DST) is a technology designed to recognize drive fault conditions that qualify the drive as a

failed unit. DST validates the functionality of the drive at a system level.

There are two test coverage options implemented in DST:

1.

Extended test

2.

Short text

The most thorough option is the extended test that performs various tests on the drive and scans every logical

block address (LBA) of the drive. The short test is time-restricted and limited in length—it does not scan the

entire media surface, but does some fundamental tests and scans portions of the media.

If DST encounters an error during either of these tests, it reports a fault condition. If the drive fails the test,

remove it from service and return it to Seagate for service.

5.2.6.1

DST failure definition

The drive will present a “diagnostic failed” condition through the self-tests results value of the diagnostic log

page if a functional failure is encountered during DST. The channel and servo parameters are not modified to

test the drive more stringently, and the number of retries are not reduced. All retries and recovery processes

are enabled during the test. If data is recoverable, no failure condition will be reported regardless of the number

of retries required to recover the data.

The following conditions are considered DST failure conditions:

•

Seek error after retries are exhausted

•

Track-follow error after retries are exhausted

•

Read error after retries are exhausted

•

Write error after retries are exhausted

Recovered errors will not be reported as diagnostic failures.

Table 1:

Temperature Log Page (0Dh)

Parameter Code

Description

0000h

Primary Temperature

0001h

Reference Temperature

Section	Page
1.0 Scope	7
2.0 Applicable standards and reference documentation	9
2.1 Standards	9
2.1.1 Electromagnetic compatibility	9
2.1.1.1 Electromagnetic susceptibility	9
2.1.2 Electromagnetic compliance	10
2.2 Reference documents	11
3.0 General description	13
3.1 Standard features	13
3.2 Media description	14
3.3 Performance	14
3.4 Reliability	15
3.5 Formatted capacities	15
3.5.1 Programmable drive capacity	15
3.6 Factory-installed accessories	16
3.7 Factory-installed options	16
3.8 User-installed accessories	16
4.0 Performance characteristics	17
4.1 Internal drive characteristics	17
4.2 Seek performance characteristics	17
4.2.1 Access time	17
4.2.2 Format command execution time for ³ 512-byte sectors (minutes)	18
4.2.3 General performance characteristics	18
4.3 Start/stop time	18
4.4 Prefetch/multi-segmented cache control	19
4.5 Cache operation	19
4.5.1 Caching write data	20
4.5.2 Prefetch operation	20
4.5.3 Optimizing cache performance for desktop and server applications	21
5.0 Reliability specifications	23
5.1 Error rates	23
5.1.1 Recoverable Errors	23
5.1.2 Unrecoverable Errors	23
5.1.3 Seek errors	24
5.1.4 Interface errors	24
5.2 Reliability and service	24
5.2.1 Mean time between failures (MTBF)	24
5.2.2 Preventive maintenance	24
5.2.3 Hot plugging the drive	24
5.2.4 S.M.A.R.T.	25
5.2.5 Thermal monitor	26
5.2.6 Drive Self Test (DST)	27
5.2.6.1 DST failure definition	27
5.2.6.2 Implementation	28
5.2.6.2.1 State of the drive prior to testing	28
5.2.6.2.2 Invoking DST	28
5.2.6.2.3 Short and extended tests	28
5.2.6.2.4 Log page entries	29
5.2.6.2.5 Abort	29
5.2.7 Product warranty	29
6.0 Physical/electrical specifications	31
6.1 AC power requirements	31
6.2 DC power requirements	31
6.2.1 Conducted noise immunity	33
6.2.2 Power sequencing	33
6.2.3 Current profiles	33
6.3 Power dissipation	36
6.4 Environmental limits	38
6.4.1 Temperature	38
6.4.2 Relative humidity	38
6.4.3 Effective altitude (sea level)	38
6.4.4 Shock and vibration	39
6.4.4.1 Shock	39
6.4.4.2 Vibration	41
6.4.5 Air cleanliness	41
6.4.6 Corrosive environment	41
6.4.7 Acoustics	42
6.4.8 Electromagnetic susceptibility	42
6.5 Mechanical specifications	43
7.0 Defect and error management	45
7.1 Drive internal defects/errors	45
7.2 Drive error recovery procedures	45
7.3 FC-AL system errors	46
8.0 Installation	47
8.1 Drive orientation	47
8.2 Cooling	47
8.3 Drive mounting	48
8.4 Grounding	48
9.0 Interface requirements	49
9.1 FC-AL features	49
9.1.1 Fibre Channel link service frames	49
9.1.2 Fibre Channel task management functions	50
9.1.3 Fibre Channel task management responses	50
9.1.4 Fibre Channel port login	51
9.1.5 Fibre Channel port login accept	52
9.1.6 Fibre Channel Process Login	52
9.1.7 Fibre Channel Process Login Accept	53
9.1.8 Fibre Channel fabric login	53
9.1.9 Fibre Channel fabric accept login	54
9.1.10 Fibre Channel Arbitrated Loop options	55
9.2 Dual port support	55
9.3 SCSI commands supported	56
9.3.1 Inquiry data	61
9.3.2 Mode Sense data	61
9.4 Miscellaneous operating features and conditions	65
9.5 FC-AL physical interface	66
9.5.1 Physical characteristics	66
9.5.1.1 Physical description	66
9.5.2 Connector requirements	67
9.5.3 Electrical description	67
9.5.4 Pin descriptions	68
9.5.5 FC-AL transmitters and receivers	69
9.5.6 Power	69
9.5.7 Fault LED Out	69
9.5.8 Active LED Out	70
9.5.9 Enable port bypass signals	70
9.5.10 Motor start controls	70
9.5.11 SEL_6 through SEL_0 ID lines	71
9.5.11.1 Parallel Enclosure Services Interface (ESI)	71
9.5.12 Device control codes	73
9.6 Signal characteristics	73
9.6.1 TTL input characteristics	73
9.6.2 Differential PECL output	74
9.6.3 Differential PECL input	74

Seagate ST300MM0026 Savvio 10K.1 FC Product Manual - Page 27

Drive Self Test DST, 2.6.1, DST failure definition, Parameter Code, Description

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