Seagate ST336754SS Cheetah 15K.4 SAS Product Manual
Seagate ST336754SS - Cheetah 36.7 GB Hard Drive Manual
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- Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 1
Cheetah 15K.4 SAS ST3146854SS ST373454SS ST336754SS - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 2
- Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 3
Cheetah 15K.4 SAS ST3146854SS ST373454SS ST336754SS - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 4
Publication number: 100350601, Rev. B May 2005 Seagate and Seagate Technology are registered trademarks of Seagate Technology LLC. Cheetah, SeaTools, SeaFONE, SeaBOARD, SeaTDD, and the Wave logo are either registered trademarks or trademarks of Seagate Technology LLC. Other product names are - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 5
Revision Rev. A Rev. B Revision status summary sheet Date 11/22/04 05/04/05 Sheets Affected All. Pages 11, 37, 58, and 59. - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 6
- Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 7
service 18 5.2.1 Annualized Failure Rate (AFR 18 5.2.2 Preventive maintenance 18 5.2.3 Hot plugging the drive 18 5.2.4 S.M.A.R.T 19 5.2.5 Thermal monitor 20 5.2.6 Drive 6.2.2 Power sequencing 27 6.2.3 Current profiles 27 6.3 Power dissipation 31 Cheetah 15K.4 SAS Product Manual, Rev. B i - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 8
Drive internal defects/errors 39 7.2 Drive error recovery procedures 39 7.3 SAS system errors 40 8.0 Installation 41 8.1 Drive orientation 41 8.2 Cooling 42 8.3 Drive 61 9.5.2 Differential signals 62 10.0 Seagate Technology support services 73 ii Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 9
Cheetah 15K.4 SAS disc drive 1 Typical ST3146854SS drive +12V current profile 28 Typical ST3146854SS drive +5V current profile 28 Typical ST373454SS drive +12V current profile 29 Typical ST373454SS drive +5V current profile 29 Typical ST336754SS drive Cheetah 15K.4 SAS Product Manual, Rev. B 1 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 10
2 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 11
SCSI) disc drives. Cheetah drives support the SAS Protocol specifications to the extent described in this manual. The SAS Interface Manual (part number 100293071) describes the general SAS characteristics of this and other Seagate SAS drives. Figure 1. Cheetah 15K.4 SAS disc drive Cheetah 15K.4 SAS - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 12
2 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 13
Cheetah SAS family complies with Seagate standards as noted in the appropriate sections of this manual and the Seagate SAS Interface Manual, part number 100293071. The Cheetah disc drive not provide adequate shielding. If the I/O cables are external to the enclosure, shielded cables should be used, - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 14
microprocessor • 3.5-inch floppy disc drive • Keyboard • Monitor/display • Printer • External modem • Mouse Although the test system with this Seagate model complies with the directives the Taiwanese Bureau of Standards, Metrology, and Inspection (BSMI). 4 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 15
2.3 Reference documents Cheetah 15K.4 SAS Installation Guide Seagate part number: 100350602 SAS Interface Manual Seagate part number: 100293071 ANSI SAS Documents SFF-8323 3.5" Drive Form Factor with Serial Connector SFF-8460 HSS Backplane Design Guidelines SFF-8470 Multi Lane Copper - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 16
6 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 17
support the Serial Attached SCSI Protocol as described in the ANSI specifications, this document, and the SAS Interface Manual (part number 100293071) which describes the general interface characteristics of this drive. Cheetah drives with either SAS or SATA hard disc drives. This allows you to - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 18
features Cheetah drives have the following standard features: • 1.5 / 3 Gbit Serial Attached SCSI (SAS) interface • Integrated dual port SAS controller supporting the SCSI protocol • Support for SAS expanders and fanout adapters • Firmware downloadable using the SAS interface • 64 - deep task set - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 19
83342E0 ST336754SS Decimal 71,687,372 70,512,692 70,197,546 68,914,176 68,766,592 Hex 445DCCC 433F034 42F212A 41B8C00 4194B80 2. Seagate drives also OEM standard drives are shipped with the Cheetah 15K.4 SAS Installation Guide (part number 100350602). Cheetah 15K.4 SAS Product Manual, Rev. - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 20
unit shipping pack. Users planning single unit distribution should specify this option. • The Cheetah 15K.4 SAS Installation Guide, part number 100350602, is usually included with each standard OEM drive shipped, but extra copies may be ordered. • The Safety and Regulatory Agency Specifications - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 21
2.0 ST373454SS 73.4 4 471,916 18,351 50,864 85,000 628 685-1,142 15k 2.0 ST336754SS 36.7 2 471,916 18,351 50,864 85,000 628 685-1,142 15k 2.0 Gbytes (formatted on a representative sample of drives. 2. Access to data = access time + latency time. Cheetah 15K.4 SAS Product Manual, Rev. B 11 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 22
characteristics ST336754SS 30 drive waits for a NOTIFY (ENABLE SPINUP) primitive. After receiving a NOTIFY (ENABLE SPINUP) primitive through either port, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure). 12 Cheetah 15K.4 SAS Product Manual - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 23
08h) for standard OEM versions of this drive family are given in Table 9.3.2.1. 4.5 Cache operation Note. Refer to the SAS Interface Manual for more detail concerning the cache bits. Of enabled, refer to section 4.5.2 for operation from this point. Cheetah 15K.4 SAS Product Manual, Rev. B 13 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 24
of user-selectable configurations. The drive supports operation of any integer number segmentation is used as set up for read functions. The buffer segmentation scheme is set up or changed drive does not use the Prefetch Ceiling field (bytes 10 and 11). 14 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 25
During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if Mode parameters page 08h, byte 2, bit 4 is set to 1 (Discontinuity--DISC bit). When prefetch ( command (1Ah) in the SAS Interface Manual, part number 100293071. Cheetah 15K.4 SAS Product Manual, Rev. B 15 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 26
16 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 27
the following: • The drive is operated in accordance with this manual using DC power as defined in paragraph 6.2, "DC power requirements." • Errors caused by host system failures are excluded from error rate computations. • Assume random data. • Default OEM error recovery settings are applied. This - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 28
sync, or CRC error. 5.2 Reliability and service You can enhance the reliability of Cheetah disc drives by ensuring that the drive receives adequate cooling. Section 6.0 provides temperature measurements not respond to link reset on the failing port. 18 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 29
enabled, S.M.A.R.T. collects on-line data as the drive performs normal read and write operations. When the PERF bit is set, the drive is considered to be in "On-line Mode Only 1 50 milliseconds Fully-enabled delay DEXCPT = 0, PERF = 0 300 milliseconds Cheetah 15K.4 SAS Product Manual, Rev. B 19 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 30
point is set at 65°C which is the maximum temperature limit according to the drive specification. The second trip point is user-selectable using the Log Select command. The reference temperature parameter in the temperature log page (see Table 1) can 20 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 31
. The default value for this drive is 65°C, however, you can set it to any value in the . If the drive fails the test, remove it from service and return it to Seagate for service. 5.2.6.1 DST failure definition The drive will present a on this drive. Cheetah 15K.4 SAS Product Manual, Rev. B 21 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 32
a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive. A Drive Not Ready condition is reported by the drive under the following conditions: • Motor Code field is set to the same value as sent in the DST command 22 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 33
return information Seagate customer service centers are the only facilities authorized to service Seagate drives. Seagate does not sanction any third-party repair facilities. Any unauthorized repair or tampering with the factory seal voids the warranty. Cheetah 15K.4 SAS Product Manual, Rev. B 23 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 34
24 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 35
The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector. Table 2: ST3146854SS DC power requirements ST3146854SS 0.77 1.23 1.82 1.67 3.88 1.02 0.04 1.04 1.17 1.12 1.20 1.70 2.90 Cheetah 15K.4 SAS Product Manual, Rev. B 25 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 36
[1] [4] 1.02 0.04 Peak operating current: ST336754SS 1.5 Gbit mode (Amps) (Amps) +5V drive signifies that its power-up sequence has been completed and that the drive is able to accept selection by the host initiator. [3] See +12V current profile in Figure 2. 26 Cheetah 15K.4 SAS Product Manual - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 37
Power sequencing The drive does not require power sequencing. The drive protects against inadvertent writing ST336754SS models are shown below in the following figures. Note: All times and currents are typical. See Tables 2 and 3 for maximum current requirements. Cheetah 15K.4 SAS Product Manual - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 38
Figure 2. Typical ST3146854SS drive +12V current profile Figure 3. Typical ST3146854SS drive +5V current profile 28 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 39
Figure 4. Typical ST373454SS drive +12V current profile Figure 5. Typical ST373454SS drive +5V current profile Cheetah 15K.4 SAS Product Manual, Rev. B 29 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 40
Figure 6. Typical ST336754SS drive +12V current profile Figure 7. Typical ST336754SS drive +5V current profile 30 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 41
to the following I/O rate curve (see Figure 8). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt (1.5 Gbit) DC current and power vs. input/output operations per second Cheetah 15K.4 SAS Product Manual, Rev. B 31 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 42
refer to the following I/O rate curve (see Figure 8). Locate the typical I/O rate for a drive in your system on the horizontal axis and read the corresponding +5 volt current, +12 volt Gbit) DC current and power vs. input/output operations per second 32 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 43
Amperes Power (watts) 1.000 0.800 0.600 0.400 0.0 10.00 8.00 6.00 4.00 50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0 I/Os per Second Figure 13. ST336754SS (1.5 Gbit) DC current and power vs. input/output operations per second Cheetah 15K.4 SAS Product Manual, Rev. B 33 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 44
a maximum gradient of 36°F (20°C) per hour. This specification assumes that the drive is packaged in the shipping container designed by Seagate for use with drive. HDA Temp. Check Point 1.0" .5" Figure 14. Location of the HDA temperature check point 34 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 45
drive chassis. If the drive drive movement. The limits of shock and vibration defined within this document are specified with the drive normal The drive, as ). The drive, as drives and integrated drives. The drive Z axis. The drive subjected to nonrepetitive Z axis. The drive subjected to nonrepetitve - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 46
single or multipacks with a gross weight of 20 pounds (8.95 kg) or less by Seagate for general freight shipment shall withstand a drop test from 48 inches (1,070 mm) against a concrete floor or equivalent. Z Y X X Z Y Figure 15. Recommended mounting 36 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 47
office environment with minimal environmental control. 6.4.6 Corrosive environment Seagate electronic drive components pass accelerated corrosion testing equivalent to 10 years replacing materials near circuitry with sulfide-free alternatives. Cheetah 15K.4 SAS Product Manual, Rev. B 37 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 48
drives when measured according to Seagate specification 30553 -001. There will not be any tones more than 24 dB above the masking noise on any drive 8.3, "Drive mounting." BLIND) 4.22 X 90 ( .166 X 90 ) 0.36 ( .014) DRIVE CENTER LINE 3.50 +/- .38 (.138 +/- .015) 0.13 (.005) 0.13 (. - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 49
set in the Error Recovery Parameters mode page. Error recovery and defect management may involve using several SCSI commands described in the SAS Interface Manual. The drive implements selectable error recovery time limits required in video applications. The error recovery scheme supported - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 50
drive manual. A setting of zero (0) will result in the drive not performing error recovery. For example, suppose the read/write recovery page has the RC bit set to 0, read retry count set is set to 00 drive drive. Status returned by the drive to the initiator is described in the SAS Interface Manual - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 51
8.0 Installation Cheetah disc drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the drive. SAS drives are designed to be used in a host system that provides a SAS-compatible backplane with bays designed to accomodate the drive. In such systems, the host - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 52
the air inlet and exit should be chosen to minimize the travel length of air heated by the drive and other heat sources within the rack, cabinet, or drawer environment. If forced air is determined to to side) Figure 18. Air flow Above unit Under unit 42 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 53
you mount the drive using the bottom holes, ensure that you do not physically distort the drive by attempting to in the drive and cannot be separated by the user. The equipment in which the drive is mounted electrically isolating) method of mounting the drive in the host equipment. Increased - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 54
44 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 55
lists the SAS-specific features supported by Cheetah drives. 9.1.1 task management functions Table 6 lists the SAS task management functions supported. Table 6: SAS task management functions supported Task name Abort Task Clear ACA Clear task set Abort task set Logical Unit Reset Query Task - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 56
drives support: • Concurrent port transfers-The drive supports receiving COMMAND, TASK management transfers on both ports at the same time. • Full duplex-The drive supports sending XFER_RDY, DATA and RESPONSE transfers while receiving frames on both ports. 46 Cheetah 15K.4 SAS Product Manual - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 57
VS (vendor specific) Inquiry Date Code page (C1h) Device Behavior page (C3h) Firmware Numbers page (C0h) Implemented Operating Def page (81h) Jumper Settings page (C2h) Supported Vital Product Data page (00h) Unit Serial Number page (80h) Lock-unlock cache Log Select PCR bit DU bit DS bit TSD bit - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 58
Drive supported) 3Ch Y Read Capacity 25h Y Read Defect Data (10) 37h Y Read Defect Data (12) B7h Y Read Extended 28h Y DPO bit supported Y FUA bit supported Y Read Long 3Eh Y Reassign Blocks 07h Y Receive Diagnostic Results 1Ch Y 48 Cheetah 15K.4 SAS Product Manual - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 59
and Bh supported) [3] Write Extended DPO bit FUA bit Write Long Command code 17h 57h 03h 16h 56h 01h 31h 30h 32h 0Bh 2Bh 1Dh 33h 1Bh 35h 00h 2Fh 0Ah 2Eh 3Bh 2Ah 3Fh Supported Y Y Y Y Y Y Y Y Y Y N Y Y N Y N N N Y Y Y Y Y N Y Y Y Y Y Y Y Y Y Y Y Y Y Y Cheetah 15K.4 SAS Product Manual, Rev. B 49 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 60
can result in firmware corruption. This usually makes the drive inoperable. [3] Reference Mode Sense command 1Ah for mode pages supported. [4] Y = Yes. Command is supported. N = No. Command is not supported. A = Support is available on special request. 50 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 61
20 ST336754SS 53 54 33 33 36 37 35 34 53 53 20 9.3.2 Mode Sense data The Mode Sense command provides a way for the drive to report its operating parameters to the initiator. The drive maintains four sets of mode parameters: 1. Default values Default values are hard-coded in the drive firmware - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 62
on reset, hard reset, or Bus drive in response to the Mode Sense command pages for SCSI implementation (see the SAS Interface Manual ). Definitions: DEF = Default value. Standard OEM drives are shipped configured this way. CHG = Changeable bits; indicates if default value is changeable. 52 Cheetah - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 63
(0x3A), 00 00 00 18 00 18 50 00 00 00 CHG Page 58(0x3A), 00 00 FF FF FF FF 00 00 00 00 Cheetah 15K.4 SAS Product Manual, Rev. B 53 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 64
), 00 00 00 18 00 18 50 00 00 00 CHG Page 58(0x3A), 00 00 FF FF FF FF 00 00 00 00 54 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 65
9.3.2.3 ST336754SS Mode Sense data DEF Page 0(0x00), 00 00 0F 00 00 00 CHG Page 0(0x00), B7 40 0F 00 00 00 DEF Page 1(0x01), C0 (0x3A), 00 00 00 18 00 18 50 00 00 00 CHG Page 58(0x3A), 00 00 FF FF FF FF 00 00 00 00 Cheetah 15K.4 SAS Product Manual, Rev. B 55 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 66
11: Miscellaneous status Supported Y Status Good Y Check condition Y Condition met/good Y Busy Y Intermediate/good Y Intermediate/condition met/good Y Reservation conflict Y Task set full N ACA active N ACA active, faulted initiator 56 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 67
. Details of the physical, electrical, and logical characteristics are provided within this section. The operational aspects of Seagate's SAS drives are provided in the SAS Interface Manual.. J6 SAS Interface connector Figure 19. Physical interface Cheetah 15K.4 SAS Product Manual, Rev. B 57 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 68
.875 1.27 (14X) 1.27 (6X) 5.08 B 0.84 0.05 (22X) 0.15 B 4.90 0.08 P15 P1 S1 S7 CL OF DATUM B Figure 20. SAS connector dimensions 58 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 69
a future revision of this publication when production parts are available from major connector manufacturers. The SAS device connector is illustrated in Figures 20 and 21. Cheetah 15K.4 SAS Product Manual, Rev. B 59 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 70
Diff output pair S13* +Port B_out S14 Port B Ground * - Short pin to support hot plugging NC - No connection in the drive. Pin Signal name Signal type P1* NC (reserved 3.3Volts) P2* NC (reserved 3. 12 Volts charge P14* 12 Volts P15* 12 Volts 60 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 71
signal name information. 9.5.1 Ready LED Out The Ready LED Out signal is driven by the drive as indicated in Table 13. Table 13: Ready LED Out conditions Normal command activity Ready LED off, 0.5 seconds on and off for 0.5 seconds) Toggles on/off Cheetah 15K.4 SAS Product Manual, Rev. B 61 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 72
The LED and the current limiting resistor are external to the drive. See Table 14 for the output characteristics of the LED drive signals. Table 14: LED drive signal State LED off, high LED on, jitter population has a range of ± 7 standard deviations. 62 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 73
time (in UI) Outline of eye mask before adding sinusoidal jitter Outline of eye mask after adding sinusoidal jitter Figure 24. Reveive tolerance eye mask Cheetah 15K.4 SAS Product Manual, Rev. B 63 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 74
(log/log plot) FNOM = 1.5 x 10 9 for 1.5 Gbps FNOM = 3.0 x 10 9 for 3.0 Gbps 1.0 0.1 0 FNOM / 25,000 FNOM / 1,667 Frequency (in kHz) Figure 25. Sinusoidal jitter mask 64 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 75
The OOB sequence is performed at signal voltage levels corresponding to the lowest supported transfer rate. Table 16 specifies the signal characteristics. Table 16: Transmitter signal voltage between the burst times and the idle times of an OOB signal. Cheetah 15K.4 SAS Product Manual, Rev. B 65 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 76
< 10-12 and the average of the individual events is the measure of the asymmetry. Jitter peak-to-peak measured < (maximum total jitter - |Asymmetry|). 66 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 77
jitter is added to ensure the receiver has sufficient operating margin in the presence of external interference. f Deterministic jitter: 900 kHz to 750 MHz. g Deterministic jitter: 1. Gbps 50 100 ± 10 5 32.5 ± 7.5 100 ± 15 5 32.5 ± 7.5 100 ± 15 5 100 max Cheetah 15K.4 SAS Product Manual, Rev. B 67 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 78
to homogenous ground applications (e.g., between devices within an enclosure or rack, or between enclosures interconnected by a common ground return or ground plane). 9.5.2.4.1 Transmitter characteristics The drive are D.C. coupled. 68 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 79
signal at the test points on the required test loads. The transmitter uses the same settings (e.g., preemphasis, voltage swing) with both the zero-length test load and the TCTF test intra-cabinet TxRx connections. The eye masks are shown in 9.5.2.1. Cheetah 15K.4 SAS Product Manual, Rev. B 69 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 80
response and ISI loss example for 3.0 Gbps ISI loss > 3.9 dB -10.9 dB 0.3 1.5 Sample compliance interconnect Frequency (GHz) 3.0 Figure 28. ISI loss example at 3.0 Gbps 70 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 81
1.5 Gbps 9.5.2.5 Receiver characteristics The drive receiver is A.C. coupled. The receive TxRx connection. The figure given assumes that any external interference occurs prior to the point at which the an amount proportional to the actual externally induced interference between the application point - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 82
72 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 83
If you need help installing your drive, consult your system's documentation or contact the dealer's support services department for assistance specific to your system. Seagate technical support is also available to assist you online at support.seagate.com or through one of our call centers. Have - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 84
Customer Service Operations Warranty Service Seagate offers worldwide customer support for Seagate drives. Seagate distributors, OEMs and other direct customers should contact their Seagate Customer Service Operations (CSO) representative for warrantyrelated issues. Resellers or end users of drive - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 85
to 5:00 P.M. (Central Europe time) Monday through Friday. The CSO warranty center is located in Amsterdam, The Netherlands. Seagate Service Centers Toll-free support numbers Call center Austria Belgium Denmark France Germany Ireland Italy Netherlands Norway Poland Spain Sweden Switzerland Turkey - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 86
here, direct dial one of our technical support locations. Warranty service is available from 9:00 A.M. to 6:00 March (Australian Eastern time) Monday through Friday. Seagate Service Centers Call center Australia China (Mandarin)1, 4 Service Center 76 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 87
are interested in your comments and suggestions regarding this publication. Please take a few minutes to participate in our survey at the following URL: http://survey.seagate.com/survey/techpubs.nsf Thank you for your time and comments. Cheetah 15K.4 SAS Product Manual, Rev. B 77 - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 88
78 Cheetah 15K.4 SAS Product Manual, Rev. B - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 89
drive failure 18 drive malfunction 18 drive mounting 38, 43 drive select 60 dual port support 46 E electrical description of connector 60 signal characteristics 61 specifications 25 electromagnetic compatibility 3 electromagnetic susceptibility 38 EMI requirements 3 Cheetah 15K.4 SAS Product Manual - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 90
41 guide 5 interface commands supported 47 error rate 17 errors 18 illustrated 57 physical 57 requirements 45 interleave 80 minimum 12 intermediate/condition met/good status 56 intermediate/good status 56 internal data rate 11 internal defects/errors 39 internal drive characteristics 11 J jumpers - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 91
segmented cache control 13 preventive maintenance 17 Q queue tagging 56 Cheetah 15K.4 SAS Product Manual, Rev. B R radio interference regulations 3 RCD bit task management functions 45 SAS documents 5 SAS Interface Manual 3, 5 SCSI interface commands supported 47 seek error defined 18 rate 17 seek - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 92
task set full status 56 technical support services 73 temperature 34, 42 ambient 34 case 34 gradient 34 limits 34 non-operating 34 regulation 3 See also cooling terminate task function 45 terminators 41 tracks per inch 11 tracks per surface 11 transmitters 61 transporting the drive 23 U unformatted - Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 93
- Seagate ST336754SS | Cheetah 15K.4 SAS Product Manual - Page 94
Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100350601, Rev. B, Printed in USA
Cheetah 15K.4 SAS
ST3146854SS
ST373454SS
ST336754SS