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Taiwanese Bureau of Standards, Metrology, and

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Cheetah 18XL Product Manual, Rev. G 81 SCSI bus ID 67 SCSI bus phase sequence 55 SCSI command 35 SCSI I/O connector 57 SCSI ID 37, 41 SCSI interface 10, 13, 58 SCSI interface cable 58 SCSI interface commands supported 46 SCSI interface connector 56 SCSI interface data 9 SCSI Interface Product Manual 1, 3, 4, 5 SCSI systems error 36 SCSI systems error consideration 35 SCSI systems error management 36 SCSI Ultra160 implementation 50 SE 67 Seagate support service 37 sector 11 sector interleave 9 sector size 8 sector sizes 10 seek error 13 seek positioning error 13 segment 10, 11 segment number 11 self-contained 11 Self-Monitoring Analysis and Reporting Technology. See S.M.A.R.T. SE-LVD alternative 68 sense key 14 sequential read operations 12 service life 13, 15 philosophy 15 tools 15 servo data 5 shielding 3 shipping 19 shipping container 28 shock 29 and vibration 29 shock mount 43 signal ground 43 single unit shipping pack 8 single-ended (SE) drivers and receivers 7 single-ended interface circuit 25, 26 site installation 15 software interleave 12 spare part 15 spindle 22 spindle startup 41 standard day 27 standards 3 start motor command 21 start unit command 41 start/stop time 10 status 36 stop spindle 10 stop time 10 storage capacity 35 straight-in connector 60 strict bit in Mode page 00h 11 supply voltage 21 support services 73 synchronous data transfer 56 synchronous data transfer operation 71 synchronous data transfer period 56 synchronous transfer period 71 system chassis 43 system recovery procedures 13 T Taiwanese Bureau of Standards, Metrology, and Inspection 4 technical support services 73 temperature 10, 27, 42 ambient 27 case 27 gradient 27 non-operating 28 PCB and HDA 27 regulation 3 See also cooling termination 22 terminator enable jumper TE 60 terminator power 69 terminator requirements 37, 69 TP1 position 41 tracks/inch 9 tracks/surface, total 9 transfer period 56 transmitter receiver circuits 68 typical access time 10 U Ultra160 mode 46 Ultra160 SCSI 5 Ultra160 SCSI controller 7 Ultra160 SCSI interface 5, 7 unformatted 8 unrecoverable condition 13 unrecoverable error 13 unrecoverable seek error 14 Unrecoverable write error 13 V vibration 29, 31 vital product data 49 volatile memory 50 voltage 10, 21 W warranty 7, 19 wet bulb temperature 27

Section	Page
Table of Contents	7
1.0 Scope 1	7
2.0 Applicable standards and reference documentation 3	7
2.1 Standards 3	7
2.1.1 Electromagnetic compatibility 3	7
2.1.2 Electromagnetic susceptibility 3	7
2.2 Electromagnetic compliance 3	7
2.3 Reference documents 4	7
3.0 General description 5	7
3.1 Standard features 7	7
3.2 Media characteristics 7	7
3.3 Performance 7	7
3.4 Reliability 7	7
3.5 Unformatted and formatted capacities 8	7
3.6 Programmable drive capacity 8	7
3.7 Factory installed accessories 8	7
3.8 Options (factory installed) 8	7
4.0 Performance characteristics 9	7
4.1 Internal drive characteristics (transparent to user) 9	7
4.2 SCSI performance characteristics (visible to user) 9	7
4.2.1 Access time 9	7
4.2.2 Format command execution time (minutes) 9	7
4.2.3 Generalized performance characteristics 9	7
4.3 Start/stop time 10	7
4.4 Prefetch/multi-segmented cache control 10	7
4.5 Cache operation 10	7
4.5.1 Caching write data 11	7
4.5.2 Prefetch operation 12	7
5.0 Reliability specifications 13	7
5.1 Error rates 13	7
5.1.1 Environmental interference 13	7
5.1.2 Read errors 13	7
5.1.3 Write errors 13	7
5.1.4 Seek errors 13	7
5.2 Reliability and service 14	7
5.2.1 Mean time between failure 14	7
5.2.2 Field failure rate vs time 14	7
5.2.3 Preventive maintenance 15	7
5.2.4 Service life 15	7
5.2.5 Service philosophy 15	7
5.2.6 Service tools 15	7
5.2.7 Hot plugging Cheetah 18XL disc drives 15	7
5.2.8 S.M.A.R.T. 16	7
5.2.9 Drive Self Test (DST) 17	7
5.2.10 Product warranty 19	7
6.0 Physical/electrical specifications 21	7
6.1 AC power requirements 21	7
6.2 DC power requirements 21	7
6.2.1 Conducted noise immunity 22	7
6.2.2 Power sequencing 22	7
6.2.3 12 V - Current profile 22	7
6.3 Power dissipation 25	7
6.4 Environmental limits 27	7
6.4.1 Temperature 27	7
6.4.2 Relative humidity 28	8
6.4.3 Effective altitude (sea level) 28	8
6.4.4 Shock and vibration 29	8
6.4.5 Air cleanliness 31	8
6.4.6 Acoustics 31	8
6.4.7 Electromagnetic susceptibility 31	8
6.5 Mechanical specifications 32	8
7.0 Defect and error management 35	8
7.1 Drive internal defects 35	8
7.2 Drive error recovery procedures 35	8
7.3 SCSI systems errors 36	8
8.0 Installation 37	8
8.1 Drive ID/option select header 37	8
8.1.1 Notes for figures 15, 16, and 17. 40	8
8.1.2 Function description 41	8
8.2 Drive orientation 42	8
8.3 Cooling 42	8
8.3.1 Air flow 42	8
8.4 Drive mounting 43	8
8.5 Grounding 43	8
9.0 Interface requirements 45	8
9.1 General description 45	8
9.2 SCSI interface messages supported 45	8
9.3 SCSI interface commands supported 46	8
9.3.1 Inquiry Vital Product data 49	8
9.3.2 Mode Sense data 50	8
9.4 SCSI bus conditions and miscellaneous features supported 55	8
9.5 Synchronous data transfer 56	8
9.5.1 Synchronous data transfer periods supported 56	8
9.5.2 REQ/ACK offset 56	8
9.6 Physical interface 56	8
9.6.1 DC cable and connector 56	8
9.6.2 SCSI interface physical description 58	8
9.6.3 SCSI interface cable requirements 58	8
9.6.4 Mating connectors 59	8
9.7 Electrical description 67	8
9.7.1 Multimode—SE and LVD alternatives 67	8
9.8 Terminator requirements 69	8
9.9 Terminator power 69	8
9.10 Disc drive SCSI timing 70	8
9.11 Drive activity LED 71	8
10.0 Seagate Technology support services 73	8
Figure 1. Cheetah 18XL family drive (ST318404LC shown) 1	9
Figure 2. Cheetah 18XL family drive 6	9
Figure 3. Typical ST318404 drive +12 V current profile 23	9
Figure 4. Typical ST39204 drive +12 V current profile 23	9
Figure 5. Typical ST318404 drive +5 V current profile 24	9
Figure 6. TypicalST39204 drive +5 V current profile 24	9
Figure 7. ST318404 DC current and power vs. input/output operations per second (SE) 25	9
Figure 8. ST318404 DC current and power vs. input/output operations per second (LVD) 25	9
Figure 9. ST39204 DC current and power vs. input/output operations per second (SE) 26	9
Figure 10. ST39204 DC current and power vs. input/output operations per second (LVD) 26	9
Figure 11. Locations of PCBA components listed in Table 3 28	9
Figure 12. Recommended mounting 30	9
Figure 13. ST318404LW mounting configuration dimensions 32	9
Figure 14. ST318404LC mounting configuration dimensions 33	9
Figure 15. J6 jumper header 38	9
Figure 16. J5 jumper header (on LW models only) 39	9
Figure 17. J2 option select header 40	9
Figure 18. Air flow (suggested) 42	9
Figure 19. LW model drive physical interface (68-pin J1 SCSI I/O connector) 57	9
Figure 20. LC model drive physical interface (80-pin J1 SCSI I/O connector) 57	9
Figure 21. SCSI daisy chain interface cabling for LW drives 60	9
Figure 22. Nonshielded 68 pin SCSI device connector used on LW drives 61	9
Figure 23. Nonshielded 80 pin SCSI “SCA-2” connector, used on LC drives 62	9
Figure 24. LVD output signals 68	9
Figure 25. Typical SE-LVD alternative transmitter receiver circuits 68	9
1.0 Scope	11
2.0 Applicable standards and reference documentation	13
2.1 Standards	13
2.1.1 Electromagnetic compatibility	13
2.1.2 Electromagnetic susceptibility	13
2.2 Electromagnetic compliance	13
2.3 Reference documents	14
3.0 General description	15
3.1 Standard features	17
3.2 Media characteristics	17
3.3 Performance	17
3.4 Reliability	17
3.5 Unformatted and formatted capacities	18
3.6 Programmable drive capacity	18
3.7 Factory installed accessories	18
3.8 Options (factory installed)	18
4.0 Performance characteristics	19
4.1 Internal drive characteristics (transparent to user)	19
4.2 SCSI performance characteristics (visible to user)	19
4.2.1 Access time [5]	19
4.2.2 Format command execution time (minutes) [1]	19
4.2.3 Generalized performance characteristics	19
4.3 Start/stop time	20
4.4 Prefetch/multi-segmented cache control	20
4.5 Cache operation	20
4.5.1 Caching write data	21
4.5.2 Prefetch operation	22
5.0 Reliability specifications	23
5.1 Error rates	23
5.1.1 Environmental interference	23
5.1.2 Read errors	23
5.1.3 Write errors	23
5.1.4 Seek errors	23
5.2 Reliability and service	24
5.2.1 Mean time between failure	24
5.2.2 Field failure rate vs time	24
5.2.3 Preventive maintenance	25
5.2.4 Service life	25
5.2.5 Service philosophy	25
5.2.6 Service tools	25
5.2.7 Hot plugging Cheetah 18XL disc drives	25
5.2.8 S.M.A.R.T.	26
5.2.9 Drive Self Test (DST)	27
5.2.9.1 DST Failure Definition	27
5.2.9.2 Implementation	27
5.2.9.2.1 State of the drive prior to testing	27
5.2.9.2.2 Invoking DST	28
5.2.9.2.3 Short and extended tests	28
5.2.9.2.4 Log page entries	28
5.2.9.2.5 Abort	29
5.2.10 Product warranty	29
6.0 Physical/electrical specifications	31
6.1 AC power requirements	31
6.2 DC power requirements	31
6.2.1 Conducted noise immunity	32
6.2.2 Power sequencing	32
6.2.3 12 V - Current profile	32
6.3 Power dissipation	35
6.4 Environmental limits	37
6.4.1 Temperature	37
6.4.2 Relative humidity	38
6.4.3 Effective altitude (sea level)	38
6.4.4 Shock and vibration	39
6.4.4.1 Shock	39
6.4.4.2 Vibration	41
6.4.5 Air cleanliness	41
6.4.6 Acoustics	41
6.4.7 Electromagnetic susceptibility	41
6.5 Mechanical specifications	42
7.0 Defect and error management	45
7.1 Drive internal defects	45
7.2 Drive error recovery procedures	45
7.3 SCSI systems errors	46
8.0 Installation	47
8.1 Drive ID/option select header	47
8.1.1 Notes for figures 15, 16, and 17.	50
8.1.2 Function description	51
8.2 Drive orientation	52
8.3 Cooling	52
8.3.1 Air flow	52
8.4 Drive mounting	53
8.5 Grounding	53
9.0 Interface requirements	55
9.1 General description	55
9.2 SCSI interface messages supported	55
9.3 SCSI interface commands supported	56
9.3.1 Inquiry Vital Product data	59
9.3.2 Mode Sense data	60
9.4 SCSI bus conditions and miscellaneous features supported	65
9.5 Synchronous data transfer	66
9.5.1 Synchronous data transfer periods supported	66
9.5.2 REQ/ACK offset	66
9.6 Physical interface	66
9.6.1 DC cable and connector	66
9.6.2 SCSI interface physical description	68
9.6.3 SCSI interface cable requirements	68
9.6.4 Mating connectors	69
9.6.4.1 Mating connectors for LW model drives	69
9.6.4.2 Mating connectors for LC model drives	69
9.7 Electrical description	77
9.7.1 Multimode—SE and LVD alternatives	77
9.7.1.1 Single-ended drivers/receivers	79
9.7.1.2 Low voltage differential I/O circuits	79
9.7.1.3 General cable characteristics	79
9.8 Terminator requirements	79
9.9 Terminator power	79
9.10 Disc drive SCSI timing	80
9.11 Drive activity LED	81
10.0 Seagate Technology support services	83
Symbols	87
Numerics	87
A	87
B	87
C	87
D	87
E	88
F	88
G	88
H	88
I	89
J	89
K	89
L	89
M	89
N	89
O	90
P	90
R	90
S	90
T	91
U	91
V	91
W	91

Match case Limit results 1 per page

Cheetah 18XL Product Manual, Rev. G

SCSI bus ID

SCSI bus phase sequence

SCSI command

SCSI I/O connector

SCSI ID

SCSI interface

SCSI interface cable

SCSI interface commands supported

SCSI interface connector

SCSI interface data

SCSI Interface Product Manual

SCSI systems error

SCSI systems error consideration

SCSI systems error management

SCSI Ultra160 implementation

Seagate support service

sector

sector interleave

sector size

sector sizes

seek error

seek positioning error

segment

segment number

self-contained

Self-Monitoring Analysis and Reporting Technology.

See S.M.A.R.T.

SE-LVD alternative

sense key

sequential read operations

service

life

philosophy

tools

servo data

shielding

shipping

shipping container

shock

and vibration

shock mount

signal ground

single unit shipping pack

single-ended (SE) drivers and receivers

single-ended interface circuit

site installation

software interleave

spare part

spindle

spindle startup

standard day

standards

start motor command

start unit command

start/stop time

status

stop spindle

stop time

storage capacity

straight-in connector

strict bit in Mode page 00h

supply voltage

support services

synchronous data transfer

synchronous data transfer operation

synchronous data transfer period

synchronous transfer period

system chassis

system recovery procedures

Taiwanese Bureau of Standards, Metrology, and In-

spection

technical support services

temperature

ambient

case

gradient

non-operating

PCB and HDA

regulation