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Seagate Enterprise Capacity 3.5 HDD/Constellation ES Constellation ES (.1) SAS - Page 63

SAS transmitters and receivers, Power, Ready LED Out

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11.4.6 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. X 1 1 X l 1 1 Figure 19. SAS transmitters and receivers 11.4.7 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. 11.5 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. 11.5.1 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 CONSTELLATION ES.1 SAS PRODUCT MANUAL, REV. G 57

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