Seagate ST400FX0002 Pulsar XT.2 SAS Product Manual - Page 28

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Pulsar XT.2 SAS Product Manual, Rev. B

6.3.6.2.3

Short and extended tests

DST has two testing options:

1.

short

2.

extended

These testing options are described in the following two subsections.

Each test consists of two segments: an electrical test segment and a read/verify scan segment.

Short test (Function Code: 001b)

The purpose of the short test is to provide a time-limited test that tests as much of the drive as possible within

120 seconds. The short test does not scan the entire media contents, but does some fundamental tests and

scans portions of the media. A complete read/verify scan is not performed and only factual failures will report a

"diagnostic failed" condition. This option provides a quick confidence test of the drive.

Extended test (Function Code: 010b)

The objective of the extended test option is to empirically test critical drive components. The read operation

tests the media contents. The integrity of the media is checked through a read/verify scan of the media.

The anticipated length of the Extended test is reported through the Control Mode page.

6.3.6.2.4

Log page entries

When the drive begins DST, it creates a new entry in the Self-test Results Log page. The new entry is created

by inserting a new self-test parameter block at the beginning of the self-test results log parameter section of the

log page. Existing data will be moved to make room for the new parameter block. The drive reports 20 param-

eter blocks in the log page. If there are more than 20 parameter blocks, the least recent parameter block will be

deleted. The new parameter block will be initialized as follows:

1.

The Function Code field is set to the same value as sent in the DST command

2.

The Self-Test Results Value field is set to Fh

3.

The drive will store the log page to non-volatile memory

After a self-test is complete or has been aborted, the drive updates the Self-Test Results Value field in its Self-

Test Results Log page in non-volatile memory. The host may use LOG SENSE to read the results from up to

the last 20 self-tests performed by the drive. The self-test results value is a 4-bit field that reports the results of

the test. If the field is set to zero, the drive passed with no errors detected by the DST. If the field is not set to

zero, the test failed for the reason reported in the field.

The drive will report the failure condition and LBA (if applicable) in the Self-test Results Log parameter. The

Sense key, ASC, ASCQ, and FRU are used to report the failure condition.

6.3.6.2.5

Abort

There are several ways to abort a diagnostic. Applications can use a SCSI Bus Reset or a Bus Device Reset

message to abort the diagnostic.

Applications can abort a DST executing in background mode by using the abort code in the DST Function

Code field. This will cause a 01 (self-test aborted by the application client) code to appear in the self-test

results values log. All other abort mechanisms will be reported as a 02 (self-test routine was interrupted by a

reset condition).

Section	Page
1.0 Seagate Technology support services	9
2.0 Scope	10
3.0 Applicable standards and reference documentation	11
3.1 Standards	11
3.1.1 Electromagnetic compatibility	11
3.1.1.1 Electromagnetic susceptibility	11
3.1.2 Electromagnetic compliance	12
3.1.3 European Union Restriction of Hazardous Substances (RoHS)	12
3.1.4 China Restriction of Hazardous Substances (RoHS) Directive	13
3.2 Reference documents	13
4.0 General description	14
4.1 Standard features	14
4.2 Media description	15
4.3 Performance	15
4.4 Reliability	15
4.5 Formatted capacities	16
4.6 Programmable drive capacity	16
4.7 Factory-installed options	16
4.8 Thin Provisioning	17
4.8.1 Logical Block Provisioning	17
4.8.2 Thin Provisioning capabilities	17
4.8.3 UNMAP	17
4.8.4 FORMAT UNIT command	17
4.8.5 Protection Information (PI) and Security (SED)	17
5.0 Performance characteristics	19
5.1 Internal drive characteristics	19
5.2 Performance characteristics	19
5.2.1 Access time	19
5.2.2 FORMAT UNIT command execution time for 512-byte LBA’s (minutes)	20
5.2.3 Performance	20
5.3 Start/stop time	21
5.4 Cache control	21
5.4.1 Caching write data	21
6.0 Reliability specifications	22
6.1 Error rates	22
6.1.1 Unrecoverable Errors	23
6.1.2 Interface errors	23
6.2 Endurance Management	23
6.2.1 Wear Leveling	23
6.2.2 Garbage Collection	23
6.2.3 Write Amplification	23
6.2.4 UNMAP	23
6.2.5 Data Retention	24
6.2.6 Lifetime Endurance Management	24
6.3 Reliability and service	24
6.3.1 Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)	24
6.3.2 Preventive maintenance	24
6.3.3 Hot plugging the drive	24
6.3.4 S.M.A.R.T.	25
6.3.5 Thermal monitor	26
6.3.6 Drive Self Test (DST)	27
6.3.6.1 DST failure definition	27
6.3.6.2 Implementation	27
6.3.7 Product warranty	29
7.0 Physical/electrical specifications	30
7.1 Power specifications	30
7.1.1 Power consumption	30
7.2 AC power requirements	30
7.3 DC power requirements	31
7.3.1 Conducted noise immunity	34
7.3.2 Power sequencing	34
7.3.3 Current profiles	34
7.4 Power dissipation	36
7.5 Environmental limits	37
7.5.1 Temperature	37
7.5.2 Relative humidity	38
7.5.3 Effective altitude (sea level)	38
7.5.4 Shock and vibration	38
7.5.4.1 Shock	39
7.5.4.2 Vibration	40
7.5.5 Air cleanliness	40
7.5.6 Corrosive environment	40
7.5.7 Electromagnetic susceptibility	40
7.6 Mechanical specifications	41
8.0 About self-encrypting drives	43
8.1 Data encryption	43
8.2 Controlled access	43
8.2.1 Admin SP	43
8.2.2 Locking SP	44
8.2.3 Default password	44
8.3 Random number generator (RNG)	44
8.4 Drive locking	44
8.5 Data bands	44
8.6 Cryptographic erase	45
8.7 Authenticated firmware download	45
8.8 Power requirements	45
8.9 Supported commands	45
8.10 RevertSP	45
9.0 Defect and error management	46
9.1 Drive internal defects/errors	46
9.2 Drive error recovery procedures	47
9.3 SAS system errors	47
9.4 Background Media Scan	47
9.5 Auto-Reallocation	47
9.6 Protection Information (PI)	48
9.6.1 Levels of PI	48
9.6.2 Setting and determining the current Type Level	48
9.6.3 Identifying a Protection Information drive	48
10.0 Installation	49
10.1 Drive orientation	49
10.2 Cooling	50
10.3 Drive mounting	51
10.4 Grounding	51
11.0 Interface requirements	52
11.1 SAS features	52
11.1.1 Task management functions	52
11.1.2 Task management responses	52
11.2 Dual port support	53
11.3 SCSI commands supported	54
11.3.1 INQUIRY data	58
11.3.2 MODE SENSE data	58
11.4 Miscellaneous operating features and conditions	63
11.4.1 SAS physical interface	63
11.4.2 Physical characteristics	66
11.4.3 Connector requirements	66
11.4.4 Electrical description	66
11.4.5 Pin descriptions	66
11.4.6 SAS transmitters and receivers	67
11.4.7 Power	67
11.5 Signal characteristics	67
11.5.1 Ready LED Out	67
11.5.2 Differential signals	68
11.6 SAS-2 Specification compliance	68
11.7 Additional information	68
Numerics	69
A	69
B	69
C	69
D	69
E	69
F	70
G	70
H	70
I	70
J	70
L	70
M	70
N	71
O	71
P	71
Q	71
R	71
S	71
T	72
U	72
V	72
W	72

Seagate ST400FX0002 Pulsar XT.2 SAS Product Manual - Page 28

The Self-Test Results Value field is set to Fh

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