Seagate ST3300655LC Cheetah 15K.6 SAS Product Manual
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- Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 1
Product Manual Cheetah 15K.6 SAS ST3450856SS ST3300656SS ST3146356SS ST3450056SS (FDE) ST3300056SS (FDE) ST3146756SS (FDE) 100466193 Rev. B September 2008 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 2
trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/ or other countries. All other trademarks or registered trademarks are the property of their respective owners. One gigabyte, or GB, equals one billion bytes when referring to hard drive capacity - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 3
service 16 5.2.1 Annualized Failrue Rate (AFR) and Mean time between failure (MTBF 16 5.2.2 Preventive maintenance 16 5.2.3 Hot plugging the drive 16 5.2.4 S.M.A.R.T 17 5.2.5 Thermal monitor 18 5.2.6 Drive limits 36 6.4.1 Temperature 36 Cheetah 15K.6 SAS Product Manual, Rev. B i - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 4
40 7.0 Defect and error management 43 7.1 Drive internal defects/errors 43 7.2 Drive error recovery procedures 43 7.3 SAS system errors 67 9.5.1 Ready LED Out 67 9.5.2 Differential signals 68 10.0 Seagate Technology support services 79 ii Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 5
LLC, Cheetah® SAS (Serial Attached SCSI) disk drives. Cheetah 15K.6 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 Cheetah 15K.6 and other Seagate SAS drives. Model - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 6
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Cheetah 15K.6 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 15K.6 disk drive adequate shielding. If the I/O cables are external to the enclosure, shielded cables should be - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 8
of parts and materials in Seagate products are procured from external suppliers. We rely on the drives documented in this publication. Current supplier declarations include disclosure of the inclusion of any RoHS-regulated substance in such parts or materials. 4 Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 9
number: 30553-001 Package Test Specification Seagate P/N 30190-001 (under 100 lb.) Package Test Specification Seagate P/N 30191-001 (over 100 lb.) In case of conflict between this document and any referenced document, this document takes precedence. Cheetah 15K.6 SAS Product Manual, Rev. B 5 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 10
6 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 11
storage requirements. Cheetah 15K.6 drives 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 15K.6 drives are classified - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 12
Cheetah 15K.6 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 • 128 - deep task set - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 13
OEM models are formatted to 512 bytes per block. The block size is selectable at format time and must be one of the supported sizes listed in the table below. Seagate designs specify capacity points at certain block sizes that Seagate OEM drive shipped. Cheetah 15K.6 SAS Product Manual, Rev. B 9 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 14
10 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 15
rotation speed 15k 15k 15k RPM Avg rotational latency 2.0 2.0 2.0 msec *One Gbyte equals one billion bytes when referring to hard drive capacity. measured on a representative sample of drives. 2. Access to data = access time + latency time. Cheetah 15K.6 SAS Product Manual, Rev. B 11 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 16
the drive receives a NOTIFY (ENABLE SPINUP) primitive through either port and has not received a START STOP UNIT command with the START bit equal to 0, the drive becomes ready for normal operations within 20 seconds (excluding the error recovery procedure). 12 Cheetah 15K.6 SAS Product Manual, Rev - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 17
circular buffer whose length is an integer number of logical blocks. The drive dynamically creates and removes segments based on the workload. The wrap-around capability of the individual segments greatly enhances the cache's overall performance. Cheetah 15K.6 SAS Product Manual, Rev. B 13 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 18
(read look-ahead) is enabled (enabled by DRA = 0), the drive enables prefetch of contiguous blocks from the disk when it senses that a prefetch hit will likely occur. The drive disables prefetch when it decides that a prefetch hit is not likely to occur. 14 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 19
in this manual assume the following: • The drive is operated per this specification using DC power as defined in this manual (see Section 6.2). • Errors caused by host system failures are excluded from error rate computations. • Assume random data. • Default OEM error recovery settings are applied - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 20
operation. Discharge the static electricity from the drive carrier prior to inserting it into the system. Caution. The drive motor must come to a complete stop prior to changing the plane of operation. This time is required to insure data integrity. 16 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 21
drive's firmware monitors specific attributes for degradation over time but can't predict instantaneous drive failures. Each monitored attribute has been selected to monitor a specific set Fully-enabled delay DEXCPT = 0, PERF = 0 163 milliseconds Cheetah 15K.6 SAS Product Manual, Rev. B 17 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 22
the firmware will issue set at 68°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 11) 18 Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 23
value for this drive is 68°C, however, you can set it to any value 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 drive to be returned to Seagate as a failed drive. Cheetah 15K.6 SAS Product Manual, Rev. B 19 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 24
the drive. The self-test results value is a 4-bit field that reports the results of the test. If the field is set to zero, the drive passed with no errors detected by the DST. If the field is not set to zero, the test failed for the reason reported in the field. 20 Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 25
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.6 SAS Product Manual, Rev. B 21 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 26
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The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector. Table 12: ST3450856SS DC power requirements [2] 0.57 0.75 0.76 1.93 0.87 4.36 0.63 0.04 0.64 1.19 0.67 1.21 1.14 2.74 Cheetah 15K.6 SAS Product Manual, Rev. B 23 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 28
1.24 1.16 2.72 ST3300656SS 3 Gbit mode (Amps) (Amps) +5V +12V [2] ±5% ±5% [2] 0.54 0.63 0.90 1.76 1.07 3.96 0.63 0.04 0.60 1.06 0.65 1.08 1.16 2.44 24 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 29
0.62 1.12 1.14 2.60 ST3146356SS 3 Gbit mode (Amps) (Amps) +5V +12V [2] ±5% ±5% [2] 0.54 0.53 0.68 1.74 0.88 3.82 0.63 0.04 0.61 0.95 0.64 0.96 1.16 2.38 Cheetah 15K.6 SAS Product Manual, Rev. B 25 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 30
drive power requirements should be noted. Where multiple units are powered on simultaneously, the peak starting current must be available to each device. 4. Parameters, other than spindle start, are measured after a 10-minute warm up. 5. No terminator power. 26 Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 31
from DC to 10 MHz. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector. +5V = 250 mV pp from 0 to 100 kHz to 20 MHz. +12V = 800 mV . See Tables 12, 14, and 16 for maximum current requirements. Cheetah 15K.6 SAS Product Manual, Rev. B 27 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 32
Figure 1. Typical 450GB current profiles Figure 2. Typical 300GB current profiles 28 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 33
Figure 3. Typical 146GB current profiles Cheetah 15K.6 SAS Product Manual, Rev. B 29 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 34
refer to the following I/O rate curve (see Figure 4). 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 current , DC current and power vs. input/output operations per second 30 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 35
refer to the following I/O rate curve (see Figure 4). 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 Cheetah 15K.6 SAS Product Manual, Rev. B 31 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 36
refer to the following I/O rate curve (see Figure 4). 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 current , DC current and power vs. input/output operations per second 32 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 37
refer to the following I/O rate curve (see Figure 4). 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 Cheetah 15K.6 SAS Product Manual, Rev. B 33 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 38
refer to the following I/O rate curve (see Figure 4). 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 current , DC current and power vs. input/output operations per second 34 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 39
refer to the following I/O rate curve (see Figure 4). 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 Cheetah 15K.6 SAS Product Manual, Rev. B 35 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 40
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 10. Location of the HDA temperature check point 36 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 41
all conditions of handling and transportation. This includes both isolated drives and integrated drives. The drive subjected to nonrepetitive shock not exceeding the three values below 0.5 msec (half sinewave) Shock may be applied in the X, Y, or Z axis. Cheetah 15K.6 SAS Product Manual, Rev. B 37 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 42
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 11. Recommended mounting 38 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 43
tones more than 10 dB above the masking noise on typical drives when measured according to Seagate specification 30553-001. There will not be any tones more than 24 dB accelerated testing cannot duplicate every potential application environment. Cheetah 15K.6 SAS Product Manual, Rev. B 39 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 44
as electronic drive component reliability can be affected by the installation environment. The silver, copper, nickel and gold films used in Seagate products are 53 pounds 0.694 kilograms ST3300056SS ST3146356SS: 1.487 pounds 0.674 kilograms ST3146756SS 40 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 45
(1.620) 2X 29.21 (2X 1.150) 4.57 MIN BLIND ( .18 MIN BLIND) 4.22 X 90 ( .166 X 90 ) 0.36 ( .014) DRIVE CENTER LINE 3.50 +/- .38 (.138 +/- .015) 0.13 (.005) 0.13 (.005) 0.25 (.010) Figure 12. Physical dimensions 36.37 (1.432) 0.99 (.039) 0.41 (.016) Cheetah 15K.6 SAS Product Manual, Rev. B 41 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 46
42 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 47
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 ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 48
Therefore, each command's total recovery time is subject to the recovery time limit. Note: A recovery time limit of 0 will use the drive's default value of FF FF. Minimum recovery time limit is achieved by setting the Recovery Time Limit field to 00 01. 44 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 49
when the drive goes to idle during the Pre-Scan period. In the event that the drive is in a high transaction traffic environment and is unable to complete a BMS scan within 24 power on hours BMS will disable Pre-Scan to restore full performance to the system. Cheetah 15K.6 SAS Product Manual, Rev - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 50
are marked for DAR during read operations performed by the drive. When a write command is received for an LBA effective when AWRE and ARRE are enabled-this is the default setting from the Seagate factory. With AWRE and ARRE disabled DAR is unable to 46 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 51
8.0 Installation Cheetah 15K.6 disk 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 accommodate the drive. In such systems, - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 52
to back) Note. Air flows in the direction shown or in reverse direction (side to side) Figure 13. Air flow Above unit Under unit 48 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 53
of mounting the drive in the host equipment. Increased radiated emissions may result if you do not provide the maximum surface area ground connection between system ground and drive ground. This is the system designer's and integrator's responsibility. Cheetah 15K.6 SAS Product Manual, Rev. B 49 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 54
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specific features supported by Cheetah 15K.6 drives. 9.1.1 task management functions Table 19 lists the SAS task management functions supported. Table 19: SAS task management functions supported Task name Abort Task Clear ACA Supported Yes Yes Clear task set Yes Abort task set Yes Logical - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 56
15K.6 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. 52 Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 57
bit supported DCRT bit supported STPF bit supported IP bit supported DSP bit supported IMMED bit supported 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 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 58
Condition page (1Ah) Rigid disk Drive Geometry page (04h) Unit Attention 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 54 Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 59
) Firmware Download option (modes 5, 7, Ah and Bh supported) [3] Write Extended DPO bit Command code 07h 1Ch 17h 57h 03h 16h 56h 01h 31h 30h 32h 0Bh 2Bh 1Dh 33h 1Bh 35h 00h 2Fh 0Ah 2Eh 3Bh 2Ah Supported Y Y 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 Cheetah 15K - Seagate ST3300655LC | Cheetah 15K.6 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. 56 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 61
year (changes with actual year). ** SCSI Revision support. Refer to the appropiate SPC release documentation for last four digits of the product firmware release number. S# Eight ASCII digits 18 through 26 reflect model of drive. The table above shows the Cheetah 15K.6 SAS Product Manual, Rev. B 57 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 62
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. 58 Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 63
CHG 80 06 b7 c0 0f 00 00 00 READ CAPACITY DATA: READ BUFFER 0 1 2 3 4 5 6 7 8 9 A B C D E F ASCII 000000: 34 65 F8 6F 00 00 02 00 4e.o.... Cheetah 15K.6 SAS Product Manual, Rev. B 59 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 64
CHG 80 06 b7 c0 0f 00 00 00 READ CAPACITY DATA: READ BUFFER 0 1 2 3 4 5 6 7 8 9 A B C D E F ASCII 000000: 22 EC B2 5B 00 00 02 00 60 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 65
00 CHG 80 06 b7 c0 0f 00 00 00 READ CAPACITY DATA: READ BUFFER 0 1 2 3 4 5 6 7 8 9 A B C D E F ASCII 000000: 11 17 73 2F 00 00 02 00 s/.... Cheetah 15K.6 SAS Product Manual, Rev. B 61 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 66
to 64 queue tags supported) Deferred error handling set full ACA active ACA active, faulted initiator 9.4.1 SAS physical interface Figure 14 shows the location of the SAS device connector J1. Figures 15 and 16 provide the dimensions of the SAS device. 62 Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 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.. SAS Interface connector Figure 14. Physical interface Cheetah 15K.6 SAS Product Manual, Rev. B 63 - Seagate ST3300655LC | Cheetah 15K.6 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 15. SAS connector dimensions 64 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 69
physical interface connector. 9.4.3 Connector requirements The SAS connector on the drive complies with SFF-8482. Contact your preferred connector manufacturer for mating part information. The SAS device connector is illustrated in Figures 15 and 16. Cheetah 15K.6 SAS Product Manual, Rev. B 65 - Seagate ST3300655LC | Cheetah 15K.6 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 66 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 71
to reduce inrush current to the drive during hot plugging. 9.5 Signal characteristics This section describes the electrical signal characteristics of the drive's input and output signals. See and off for 0.5 seconds) Toggles on/off Toggles on/off Cheetah 15K.6 SAS Product Manual, Rev. B 67 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 72
The LED and the current limiting resistor are external to the drive. See Table 27 for the output characteristics of the LED drive signals. Table 27: LED drive signal State LED off, high LED on, jitter population has a range of ± 7 standard deviations. 68 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 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 19. Receive tolerance eye mask Cheetah 15K.6 SAS Product Manual, Rev. B 69 - Seagate ST3300655LC | Cheetah 15K.6 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 20. Sinusoidal jitter mask 70 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 75
The OOB sequence is performed at signal voltage levels corresponding to the lowest supported transfer rate. Table 29 specifies the signal characteristics. Table 29: Transmitter signal voltage between the burst times and the idle times of an OOB signal. Cheetah 15K.6 SAS Product Manual, Rev. B 71 - Seagate ST3300655LC | Cheetah 15K.6 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|). 72 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 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.6 SAS Product Manual, Rev. B 73 - Seagate ST3300655LC | Cheetah 15K.6 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. 74 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 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 Tx- SAS internal connector Figure 21. Compliance interconnect test load Cheetah 15K.6 SAS Product Manual, Rev. B 75 - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 80
and ISI loss example for 1.5 Gbps ISI loss > 2.0 dB -5.4 dB 0.15 0.75 Sample compliance interconnect Frequency (GHz) 1.5 Figure 24. ISI loss example at 1.5 Gbps 76 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 81
9.5.2.5 Receiver characteristics The drive receiver is A.C. coupled. The receive externally induced interference between the application point of the test and the input to the receiving phy. The additional jitter reduces the eye opening in both voltage and time. Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 82
78 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 83
, pricing, promotions and other channel-related information. To learn more about the benefits or to register, go to spp.seagate.com, any time, from anywhere in the world. Seagate Service Centers Presales Support Our Presales Support staff can help you determine which Seagate products are best suited - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 84
East and Africa, go to the "Contact Us" page on www.seagate.com. Asia/Pacific Support Services For an extensive list of telephone numbers to technical support, presales and warranty service in Asia/Pacific, go to the "Contact Us" page on www.seagate.com. 80 Cheetah 15K.6 SAS Product Manual, Rev. B - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 85
, 49 drive select 66 dual port support 52 E electrical description of connector 66 signal characteristics 67 specifications 23 electromagnetic compatibility 3 electromagnetic susceptibility 40 EMI requirements 3 environment 47 environmental limits 36 requirements 15 Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 86
read/write data 11 heat removal 47 heat source 47 host equipment 49 hot plugging the drive 16 humidity 37 humidity limits 36 I Idle Read After Write 46 inquiry data 57 installation 47 interface commands supported 53 error rate 15 errors 16 illustrated 63 physical 62 requirements 51 intermediate - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 87
selection 66 out-of-plane distortion 49 P package size 38 package test specification 5 packaged 38 parameter rounding Cheetah 15K.6 SAS Product Manual, Rev. B reliability 9 specifications 15 reliability and service 5 SAS Interface Manual 3, 5 SCSI interface commands supported 53 seek error - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 88
not supported 05 51 Function reject 04 51 task set full status 62 technical support services 79 drive 21 U unformatted 9 Unrecoverable Errors 15 unrecovered media data 15 V vibration 37, 39 W warranty 21 Z zero latency read 62 zone bit recording (ZBR) 8 84 Cheetah 15K.6 SAS Product Manual - Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 89
- Seagate ST3300655LC | Cheetah 15K.6 SAS Product Manual - Page 90
Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100466193, Rev. B, Printed in USA
Product Manual
Cheetah 15K.6 SAS
100466193
Rev. B
September 2008
ST3450856SS
ST3300656SS
ST3146356SS
ST3450056SS (FDE)
ST3300056SS (FDE)
ST3146756SS (FDE)