Seagate Enterprise Capacity 3.5 HDD/Constellation ES Constellation ES (.1) SAS - Page 21

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5.2.5

Thermal monitor

Constellation ES.1 drives implement a temperature warning system which:

1.

Signals the host if the temperature exceeds a value which would threaten the drive.

2.

Signals the host if the temperature exceeds a user-specified value.

3.

Saves a S.M.A.R.T. data frame on the drive which exceeds the threatening temperature value.

A temperature sensor monitors the drive temperature and issues a warning over the interface when the temperature exceeds a set

threshold. The temperature is measured at power-up and then at ten-minute intervals after power-up.

The thermal monitor system generates a warning code of 01-0B01 when the temperature exceeds the specified 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 65°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 65°C, however, you

can set it to any value in the range of 0 to 65°C. If you specify a temperature greater than 65°C in this field, the temperature is rounded

down to 65°C. A sense code is sent to the host to indicate the rounding of the parameter field.

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 test

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
Constellation® ES.1 SAS	1
Seagate® Technology Support Services	7
1.0 Scope	8
2.0 Applicable standards and reference documentation	9
2.1 Standards	9
2.1.1 Electromagnetic compatibility	9
2.1.2 Electromagnetic compliance	9
2.1.3 European Union Restriction of Hazardous Substances (RoHS)	10
2.1.4 China Restriction of Hazardous Substances (RoHS) Directive	10
2.2 Reference documents	11
3.0 General description	12
3.1 Standard features	13
3.2 Media description	13
3.3 Performance	14
3.4 Reliability	14
3.5 Formatted capacities	14
3.6 Programmable drive capacity	14
3.7 Factory-installed options	14
4.0 Performance characteristics	15
4.1 Internal drive characteristics	15
4.2 Seek performance characteristics	15
4.2.1 Access time	15
4.2.2 Format command execution time for 512-byte sectors (minutes)	15
4.2.3 General performance characteristics	16
4.3 Start/stop time	16
4.4 Prefetch/multi-segmented cache control	16
4.5 Cache operation	16
4.5.1 Caching write data	17
4.5.2 Prefetch operation	17
5.0 Reliability specifications	18
5.1 Error rates	18
5.1.1 Recoverable Errors	18
5.1.2 Unrecoverable Errors	18
5.1.3 Seek errors	18
5.1.4 Interface errors	18
5.2 Reliability and service	19
5.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)	19
5.2.2 Preventive maintenance	19
5.2.3 Hot plugging the drive	19
5.2.4 S.M.A.R.T.	20
5.2.5 Thermal monitor	21
5.2.6 Drive Self Test (DST)	21
5.2.7 Product warranty	23
6.0 Physical/electrical specifications	24
6.1 PowerChoiceTM power management	24
6.1.1 PowerChoice reporting methods	24
6.2 AC power requirements	25
6.3 DC power requirements	25
6.3.1 Conducted noise immunity	28
6.3.2 Power sequencing	28
6.3.3 Current profiles	28
6.4 Power dissipation	31
6.5 Environmental limits	37
6.5.1 Temperature	37
6.5.2 Relative humidity	37
6.5.3 Effective altitude (sea level)	37
6.5.4 Shock and vibration	37
6.5.5 Acoustics	39
6.5.6 Air cleanliness	39
6.5.7 Corrosive environment	39
6.5.8 Electromagnetic susceptibility	39
6.6 Mechanical specifications	40
7.0 About FIPS	41
8.0 About self-encrypting drives	42
8.1 Data encryption	42
8.2 Controlled access	42
8.2.1 Admin SP	42
8.2.2 Locking SP	42
8.2.3 Default password	42
8.3 Random number generator (RNG)	42
8.4 Drive locking	42
8.5 Data bands	43
8.6 Cryptographic erase	43
8.7 Authenticated firmware download	43
8.8 Power requirements	43
8.9 Supported commands	43
8.10 Sanitize - CRYPTOGRAPHIC ERASE	43
8.11 RevertSP	43
9.0 Defect and error management	44
9.1 Drive internal defects/errors	44
9.2 Drive error recovery procedures	44
9.3 SAS system errors	45
9.4 Background Media Scan	45
9.5 Media Pre-Scan	45
9.6 Deferred Auto-Reallocation	46
9.7 Idle Read After Write	46
9.8 Protection Information (PI)	46
9.8.1 Levels of PI	46
9.8.2 Setting and determining the current Type Level	46
9.8.3 Identifying a Protection Information drive	46
10.0 Installation	47
10.1 Drive orientation	47
10.2 Cooling	47
10.3 Drive mounting	48
10.4 Grounding	48
11.0 Interface requirements	49
11.1 SAS features	49
11.1.1 task management functions	49
11.1.2 task management responses	49
11.2 Dual port support	49
11.3 SCSI commands supported	50
11.3.1 Inquiry data	54
11.3.2 Mode Sense data	55
11.4 Miscellaneous operating features and conditions	59
11.4.1 SAS physical interface	59
11.4.2 Physical characteristics	62
11.4.3 Connector requirements	62
11.4.4 Electrical description	62
11.4.5 Pin descriptions	62
11.4.6 SAS transmitters and receivers	63
11.4.7 Power	63
11.5 Signal characteristics	63
11.5.1 Ready LED Out	63
11.5.2 Differential signals	64
11.6 SAS-2 Specification Compliance	64
11.7 Additional information	64
Numerics	65
A	65
B	65
C	65
D	65
E	66
F	66
G	66
H	66
I	66
J	66
K	66
L	66
M	66
N	67
O	67
P	67
Q	67
R	67
S	68
T	68
U	68
V	68
W	68

Seagate Enterprise Capacity 3.5 HDD/Constellation ES Constellation ES (.1) SAS - Page 21

Table 1, Temperature Log Dh

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