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Enclosure Services interface

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9.5.3 Electrical description Fibre Channel drives use the FC-SCA connector for: • DC power • FC-AL interface • Drive select (device identification) • Option selection • Enclosure Services interface This 40-pin connector is designed to plug directly into a backpanel. External cables are not required. 9.5.4 Pin descriptions This section provides a pin-out of the FC-SCA and a description of the functions provided by the pins. Table 22: FC-SCA pin descriptions Pin Signal name Signal type 1* -EN bypass port A Low Voltage TTL output 2* 12 Volts 3* 12 Volts 4* 12 Volts 5* -Parallel ESI 6* Ground[1] 7* Active LED out Open collector out 8* Reserved 9* Start_1[2] 10* Start_2[2] TTL input TTL input 11* -EN bypass port B Low Voltage TTL output 12* SEL_6 TTL input/output 13* SEL_5 TTL input/output 14* SEL_4 TTL input 15* SEL_3 TTL input/output 16* Fault LED out Open collector out 17* DEV_CTRL_CODE_2[2] TTL input 18* DEV_CTRL_CODE_1[2] TTL input 19* 5 Volts 20* 5 Volts Pin Signal name Signal type 21 12 Volts charge 22 Ground 23 Ground 24* +Port A_in Diff. PECL input pair 25* -Port A_in 26 Ground 27* +Port B_in Diff. PECL input pair 28* -Port B_in 29 Ground 30* +Port A_out Diff PECL output pair 31* -Port A_out 32 Ground 33* +Port B_out Diff PECL output pair 34* -Port B_out 35 Ground 36 SEL_2 TTL input/output 37 SEL_1 TTL input/output 38 SEL_0 TTL input/output 39 DEV_CTRL_CODE_0[2 TTL input 40 5 Volts charge *Short pins in mating backpanel connector. [1] This pin may be connected to external logic to detect the presence of the drive. The drive connects this pin to the common ground. [2] Pins 9, 10, 17, 18, and 39 are option select pins and are tied high by the drive circuitry. The preferred electrical connection at the backplane is either open or grounded (open for the '1' setting, grounded for the '0' setting). Alternatively, these pins may be driven by a 3.3V logic device, pulled up to 3.3V through a pull-up resistor (recommended size of 10k ohm), or grounded through some other means. 66 Cheetah 15K.4 FC Product Manual, Rev. C

Section	Page
1.0 Scope	13
2.0 Applicable standards and reference documentation	15
2.1 Standards	15
2.1.1 Electromagnetic compatibility	15
2.1.1.1 Electromagnetic susceptibility	15
2.1.2 Electromagnetic compliance	16
2.2 Reference documents	17
3.0 General description	19
3.1 Standard features	20
3.2 Media description	20
3.3 Performance	21
3.4 Reliability	21
3.5 Formatted capacities	21
3.5.1 Programmable drive capacity	21
3.6 Factory-installed accessories	22
3.7 Factory-installed options	22
3.8 User-installed accessories	22
4.0 Performance characteristics	23
4.1 Internal drive characteristics	23
4.2 Seek performance characteristics	23
4.2.1 Access time	23
4.2.2 Format command execution time (minutes)	24
4.2.3 General performance characteristics	24
4.3 Start/stop time	24
4.4 Prefetch/multi-segmented cache control	24
4.5 Cache operation	25
4.5.1 Caching write data	26
4.5.2 Prefetch operation	26
4.5.3 Optimizing cache performance for desktop and server applications	27
5.0 Reliability specifications	29
5.1 Error rates	29
5.1.1 Recoverable Errors	29
5.1.2 Unrecoverable Errors	29
5.1.3 Seek errors	30
5.1.4 Interface errors	30
5.2 Reliability and service	30
5.2.1 Mean time between failure (MTBF)	30
5.2.2 Preventive maintenance	30
5.2.3 Hot plugging the drive	31
5.2.4 S.M.A.R.T.	31
5.2.5 Thermal monitor	32
5.2.6 Drive Self Test (DST)	33
5.2.6.1 DST failure definition	33
5.2.6.2 Implementation	34
5.2.6.2.1 State of the drive prior to testing	34
5.2.6.2.2 Invoking DST	34
5.2.6.2.3 Short and extended tests	34
5.2.6.2.4 Log page entries	35
5.2.6.2.5 Abort	35
5.2.7 Product warranty	35
6.0 Physical/electrical specifications	37
6.1 AC power requirements	37
6.2 DC power requirements	37
6.2.1 Conducted noise immunity	38
6.2.2 Power sequencing	38
6.2.3 Current profiles	38
6.3 Power dissipation	42
6.4 Environmental limits	44
6.4.1 Temperature	44
6.4.2 Relative humidity	45
6.4.3 Effective altitude (sea level)	45
6.4.4 Shock and vibration	45
6.4.4.1 Shock	45
6.4.4.2 Vibration	48
6.4.5 Air cleanliness	48
6.4.6 Corrosive environment	48
6.4.7 Acoustics	49
6.4.8 Electromagnetic susceptibility	49
6.5 Mechanical specifications	50
7.0 Defect and error management	51
7.1 Drive internal defects/errors	51
7.2 Drive error recovery procedures	51
7.3 FC-AL system errors	53
7.4 Background Media Scan	53
7.4.1 Media Pre-Scan	54
8.0 Installation	55
8.1 Drive ID/option selection	55
8.2 LED connections	56
8.2.1 J6 connector requirements	57
8.3 Drive orientation	57
8.4 Cooling	57
8.5 Drive mounting	58
8.6 Grounding	58
9.0 Interface requirements	59
9.1 FC-AL features	59
9.1.1 Fibre Channel link service frames	59
9.1.2 Fibre Channel task management functions	60
9.1.3 Fibre Channel task management responses	60
9.1.4 Fibre Channel port login	61
9.1.5 Fibre Channel port login accept	62
9.1.6 Fibre Channel Process Login	62
9.1.7 Fibre Channel Process Login Accept	63
9.1.8 Fibre Channel fabric login	63
9.1.9 Fibre Channel fabric accept login	64
9.1.10 Fibre Channel Arbitrated Loop options	65
9.2 Dual port support	65
9.3 SCSI commands supported	66
9.3.1 Inquiry data	70
9.3.2 Mode Sense data	70
9.4 Miscellaneous operating features and conditions	75
9.5 FC-AL physical interface	76
9.5.1 Physical characteristics	76
9.5.1.1 Physical description	76
9.5.2 Connector requirements	77
9.5.3 Electrical description	78
9.5.4 Pin descriptions	78
9.5.5 FC-AL transmitters and receivers	79
9.5.6 Power	79
9.5.7 Fault LED Out	79
9.5.8 Active LED Out	79
9.5.9 Enable port bypass signals	80
9.5.10 Motor start controls	80
9.5.11 SEL_6 through SEL_0 ID lines	80
9.5.11.1 Parallel Enclosure Services Interface (ESI)	81
9.5.12 Device control codes	83
9.6 Signal characteristics	83
9.6.1 TTL input characteristics	83
9.6.2 LED driver signals	84
9.6.3 Differential PECL output	84
9.6.4 Differential PECL input	84
10.0 Seagate Technology support services	87
Numerics	93
A	93
B	93
C	93
D	94
E	94
F	94
G	95
H	95
I	95
J	95
L	95
M	95
N	96
O	96
P	96
Q	97
R	97
S	97
T	98
U	98
V	98
W	98
X	98

Match case Limit results 1 per page

Cheetah 15K.4 FC Product Manual, Rev. C

9.5.3

Electrical description

Fibre Channel drives use the FC-SCA connector for:

•

DC power

•

FC-AL interface

•

Drive select (device identification)

•

Option selection

•

Enclosure Services interface

This 40-pin connector is designed to plug directly into a backpanel. External cables are not required.

9.5.4

Pin descriptions

This section provides a pin-out of the FC-SCA and a description of the functions provided by the pins.

Table 22:

FC-SCA pin descriptions

*Short pins in mating backpanel connector.

[1]

This pin may be connected to external logic to detect the presence of the drive. The drive connects this

pin to the common ground.

[2]

Pins 9, 10, 17, 18, and 39 are option select pins and are tied high by the drive circuitry. The preferred elec-

trical connection at the backplane is either open or grounded (open for the ‘1’ setting, grounded for the ‘0’

setting). Alternatively, these pins may be driven by a 3.3V logic device, pulled up to 3.3V through a pull-up

resistor (recommended size of 10k ohm), or grounded through some other means.

Signal name

Signal type

Signal name

Signal type

-EN bypass port A

Low Voltage TTL output

12 Volts charge

12 Volts

Ground

12 Volts

Ground

12 Volts

24*

+Port A_in

Diff. PECL input pair

-Parallel ESI

25*

-Port A_in

Ground

[1]

Ground

Active LED out

Open collector out

27*

+Port B_in

Diff. PECL input pair

Reserved

28*

-Port B_in

Start_1

[2]

TTL input

Ground

10*

Start_2

[2]

TTL input

30*

+Port A_out

Diff PECL output pair

11*

-EN bypass port B

Low Voltage TTL output

31*

-Port A_out

12*

SEL_6

TTL input/output

Ground

13*

SEL_5

TTL input/output

33*

+Port B_out

Diff PECL output pair

14*

SEL_4

TTL input

34*

-Port B_out

15*

SEL_3

TTL input/output

Ground

16*

Fault LED out

Open collector out

SEL_2

TTL input/output

17*

DEV_CTRL_CODE_2

[2]

TTL input

SEL_1

TTL input/output

18*

DEV_CTRL_CODE_1

[2]

TTL input

SEL_0

TTL input/output

19*

5 Volts

DEV_CTRL_CODE_0

TTL input

20*

5 Volts

5 Volts charge