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Seagate ST32000646SS Constellation ES.1 SAS Product Manual - Page 78

Signal characteristics

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12.4.6 SAS transmitters and receivers A typical SAS differential copper transmitter and receiver pair is shown in Figure 19. The receiver is AC coupling to eliminate ground shift noise. TX T 100 T l TM 01 X 100 01 Figure 19. SAS transmitters and receivers 12.4.7 Power The drive receives power (+5 volts and +12 volts) through the SAS device connector. Three +12 volt pins provide power to the drive, 2 short and 1 long. The current return for the +12 volt power supply is through the common ground pins. The supply current and return current must be distributed as evenly as possible among the pins. Three +5 volt pins provide power to the drive, 2 short and 1 long. The current return for the +5 volt power supply is through the common ground pins. The supply current and return current must be distributed as evenly as possible among the pins. Current to the drive through the long power pins may be limited by the system to reduce inrush current to the drive during hot plugging. 12.5 Signal characteristics This section describes the electrical signal characteristics of the drive's input and output signals. See Table 15 for signal type and signal name information. 12.5.1 Ready LED Out The Ready LED Out signal is driven by the drive as indicated in Table 16. Table 16: Ready LED Out conditions Normal command activity Ready LED Meaning bit mode page 19h Spun down and no activity Spun down and activity (command executing) Spun up and no activity Spun up and activity (command executing) Spinning up or down Format in progress, each cylinder change LED status 0 1 Off Off On On On Off Off On Blinks steadily (50% on and 50% off, 0.5 seconds on and off for 0.5 seconds) Toggles on/off 70 Constellation ES.1 SAS Product Manual, Rev. E

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
3.1.2 Electromagnetic compliance	12
3.1.3 European Union Restriction of Hazardous Substances (RoHS)	13
3.1.4 China Restriction of Hazardous Substances (RoHS) Directive	13
3.2 Reference documents	14
4.0 General description	15
4.1 Standard features	16
4.2 Media description	16
4.3 Performance	16
4.4 Reliability	17
4.5 Formatted capacities	17
4.6 Programmable drive capacity	17
4.7 Factory-installed options	17
5.0 Performance characteristics	18
5.1 Internal drive characteristics	18
5.2 Seek performance characteristics	18
5.2.1 Access time	18
5.2.2 Format command execution time for 512-byte sectors (minutes)	19
5.2.3 General performance characteristics	19
5.3 Start/stop time	19
5.4 Prefetch/multi-segmented cache control	20
5.5 Cache operation	20
5.5.1 Caching write data	21
5.5.2 Prefetch operation	21
6.0 Reliability specifications	22
6.1 Error rates	22
6.1.1 Recoverable Errors	22
6.1.2 Unrecoverable Errors	22
6.1.3 Seek errors	23
6.1.4 Interface errors	23
6.2 Reliability and service	23
6.2.1 Annualized Failure Rate (AFR) and Mean Time Between Failure (MTBF)	23
6.2.2 Preventive maintenance	23
6.2.3 Hot plugging the drive	23
6.2.4 S.M.A.R.T.	24
6.2.5 Thermal monitor	25
6.2.6 Drive Self Test (DST)	26
6.2.7 Product warranty	28
7.0 Physical/electrical specifications	29
7.1 PowerChoiceTM power management	29
7.1.1 PowerChoice reporting methods	30
7.2 AC power requirements	30
7.3 DC power requirements	30
7.3.1 Conducted noise immunity	34
7.3.2 Power sequencing	34
7.3.3 Current profiles	35
7.4 Power dissipation	38
7.5 Environmental limits	44
7.5.1 Temperature	44
7.5.2 Relative humidity	44
7.5.3 Effective altitude (sea level)	45
7.5.4 Shock and vibration	45
7.5.5 Acoustics	47
7.5.6 Air cleanliness	47
7.5.7 Corrosive environment	47
7.5.8 Electromagnetic susceptibility	47
7.6 Mechanical specifications	48
8.0 About FIPS	49
9.0 About self-encrypting drives	51
9.1 Data encryption	51
9.2 Controlled access	51
9.2.1 Admin SP	51
9.2.2 Locking SP	51
9.2.3 Default password	52
9.3 Random number generator (RNG)	52
9.4 Drive locking	52
9.5 Data bands	52
9.6 Cryptographic erase	52
9.7 Authenticated firmware download	52
9.8 Power requirements	53
9.9 Supported commands	53
9.10 Sanitize - CRYPTOGRAPHIC ERASE	53
9.11 RevertSP	53
10.0 Defect and error management	54
10.1 Drive internal defects/errors	54
10.2 Drive error recovery procedures	54
10.3 SAS system errors	55
10.4 Background Media Scan	56
10.5 Media Pre-Scan	56
10.6 Deferred Auto-Reallocation	56
10.7 Idle Read After Write	57
10.8 Protection Information (PI)	57
10.8.1 Levels of PI	57
10.8.2 Setting and determining the current Type Level	57
10.8.3 Identifying a Protection Information drive	58
11.0 Installation	59
11.1 Drive orientation	59
11.2 Cooling	60
11.3 Drive mounting	61
11.4 Grounding	61
12.0 Interface requirements	62
12.1 SAS features	62
12.1.1 task management functions	62
12.1.2 task management responses	62
12.2 Dual port support	63
12.3 SCSI commands supported	64
12.3.1 Inquiry data	68
12.3.2 Mode Sense data	68
12.4 Miscellaneous operating features and conditions	73
12.4.1 SAS physical interface	74
12.4.2 Physical characteristics	77
12.4.3 Connector requirements	77
12.4.4 Electrical description	77
12.4.5 Pin descriptions	77
12.4.6 SAS transmitters and receivers	78
12.4.7 Power	78
12.5 Signal characteristics	78
12.5.1 Ready LED Out	78
12.5.2 Differential signals	79
12.6 SAS-2 Specification Compliance	79
12.7 Additional information	79
Numerics	81
A	81
B	81
C	81
D	81
E	82
F	82
G	82
H	82
I	82
J	82
K	82
L	83
M	83
N	83
O	83
P	83
Q	84
R	84
S	84
T	84
U	85
V	85
W	85