Seagate ST9900805SS Savvio 10K.1 SCSI Product Manual - Page 60

54

Savvio SCSI Product Manual, Rev. D

Table 19 shows the interface transfer rates supported by the various drive models defined in this manual.

9.6.3

SCSI interface cable requirements

The characteristics of cables used to connect parallel interface drives are discussed in the ANSI standards ref-

erenced in this section.

9.6.3.1

Cable requirements

The 80-pin connector option provided on LC models is intended for use on drives that plug directly into back-

plane connector in the host equipment. In such installations, all backplane wiring segments are subject to the

electromagnetic concepts presented in Standard T10/1365D, Rev. 3, Section 6. Installations with connectors

on cables are not recommended.

9.6.4

Mating connectors

Part numbers for the different type connectors that mate with the various Savvio SCSI I/O connectors are given

in the sections following.

9.6.4.1

Mating connectors

The nonshielded connector shall be an 80-conductor connector consisting of two rows of 40 contacts with adja-

cent contacts 50 (1.27 mm) mils apart (see Figure 15). I/O connection using a cable is not recommended. The

length and size of the host equipment DC power carrying conductors from the DC power source to the host

equipment 80-pin disc drive interface connector(s) should be strictly designed according to proper power trans-

mission design concepts. No possibility for the equipment user to attach an 80-pin cable/connector should be

allowed, since the length of the DC power carrying conductors could not be controlled and therefore could

become too long for safe power transmission to the drive. Daisy-chain 80-conductor cables should especially

not be allowed, since the power-carrying conductors on the 80-conductor interface were not intended to sup-

port a series of drives.

To insure that both drive connector and host equipment mating connector mate properly, both drive connector

and host equipment mating connector must meet the provisions of “SFF-8451 Specification for SCA-2

Unshielded Connections.” To obtain this specification, visit the following web site: www.sffcommittee.org

Recommended mating 80-position PCBA mount connectors:

Table 19:

Interface transfer rates supported

Interface type/

drive models

Maximum transfer rate

Asynchronous

Fast-5

Fast-10

Fast-20

(Ultra)

Fast-40

(Ultra2)

Fast-80

(Ultra160)

Fast-160

(Ultra320)

SE

ST973401LC

ST936701LC

yes

yes

yes

yes

no

no

no

LVD

ST973401LC

ST936701LC

yes

yes

yes

yes

yes

yes

yes

Straight-in connector

Hot plug version (with ground guide-pin)

Seagate P/N:

77678703

Amp US P/N:

or

2-557103-1

94-0680-02-1

787311-1

with polarization

Amp US P/N:

or

2-557103-2

94-0680-02-2

787311-2

without polarization

Amp Japan P/N:

5-175475-9

Section	Page
1.0 Scope	7
2.0 Applicable standards and reference documentation	9
2.1 Standards	9
2.1.1 Electromagnetic compatibility	9
2.1.2 Electromagnetic susceptibility	9
2.2 Electromagnetic compliance	10
2.3 Reference documents	11
3.0 General description	13
3.1 Standard features	14
3.2 Media characteristics	14
3.3 Performance	14
3.4 Reliability	15
3.5 Formatted capacities	15
3.5.1 Programmable drive capacity	15
3.6 Factory installed accessories	15
3.7 Options (factory installed)	16
3.8 Accessories (user installed)	16
4.0 Performance characteristic	17
4.1 Internal drive characteristics (transparent to user)	17
4.2 SCSI performance characteristics (visible to user)	17
4.2.1 Access time [5]	17
4.2.2 Format command execution time (minutes) [1]	17
4.2.3 Generalized performance characteristics	18
4.3 Start/stop time	18
4.4 Prefetch/multi-segmented cache control	19
4.5 Cache operation	19
4.5.1 Caching write data	20
4.5.2 Prefetch operation	20
4.5.3 Optimizing cache performance for desktop and server applications	20
5.0 Reliability specifications	23
5.1 Error rates	23
5.1.1 Environmental interference	23
5.1.2 Read errors	24
5.1.3 Write errors	24
5.1.4 Seek errors	24
5.2 Reliability and service	24
5.2.1 Mean time between failure	24
5.2.2 Preventive maintenance	25
5.2.3 Service life	25
5.2.4 Service philosophy	25
5.2.5 Service tools	25
5.2.6 Hot plugging Savvio SCSI disc drives	25
5.2.7 S.M.A.R.T.	26
5.2.8 Thermal monitor	27
5.2.9 Drive Self Test (DST)	28
5.2.9.1 DST Failure Definition	28
5.2.9.2 Implementation	28
5.2.9.2.1 State of the drive prior to testing	28
5.2.9.2.2 Invoking DST	29
5.2.9.2.3 Short and extended tests	29
5.2.9.2.4 Log page entries	29
5.2.9.2.5 Abort	30
5.2.10 Product warranty	30
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	38
6.4.4.1 Shock	38
6.4.4.2 Vibration	40
6.4.5 Air cleanliness	40
6.4.6 Corrosive environment	40
6.4.7 Acoustics	41
6.4.8 Electromagnetic susceptibility	41
6.5 Mechanical specifications	41
7.0 Defect and error management	43
7.1 Drive internal defects	43
7.2 Drive error recovery procedures	43
7.3 SCSI systems errors	44
8.0 Installation	45
8.1 Drive orientation	45
8.2 Cooling	45
8.3 Drive mounting	46
8.4 Grounding	46
9.0 Interface requirements	47
9.1 General description	47
9.2 SCSI interface messages supported	48
9.3 SCSI interface commands supported	49
9.3.1 Inquiry Vital Product data	53
9.3.2 Mode Sense data	53
9.4 SCSI bus conditions and miscellaneous features supported	57
9.5 Synchronous data transfer	57
9.5.1 Synchronous data transfer periods supported	58
9.5.2 REQ/ACK offset	58
9.6 Physical interface	58
9.6.1 DC cable and connector	58
9.6.2 SCSI interface physical description	59
9.6.3 SCSI interface cable requirements	60
9.6.3.1 Cable requirements	60
9.6.4 Mating connectors	60
9.6.4.1 Mating connectors	60
9.7 Electrical description	64
9.7.1 Multimode-SE and LVD alternatives	64
9.7.1.1 General cable characteristics	65
9.7.1.2 Single-ended drivers/receivers	65
9.8 Terminator requirements	65
9.8.1 Terminator power	65
9.9 Disc drive SCSI timing	66

Seagate ST9900805SS Savvio 10K.1 SCSI Product Manual - Page 60

Amp US P/N

Page 60 highlights