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Related Manuals for Seagate Cheetah T10 SAS ST3146755SS
Summary of Contents for Seagate Cheetah T10 SAS ST3146755SS
- Page 1 Cheetah T10 SAS ST3300555SS ST3146755SS ST373355SS...
- Page 2 Seagate Technology LLC. Other product names are registered trade- marks or trademarks of their owners. Seagate reserves the right to change, without notice, product offerings or specifications. No part of this publication may be reproduced in any form without written permission of Seagate Technol- ogy LLC.
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Page 3: Table Of Contents
Scope............... . 1 Standards, compliance and reference documents . - Page 4 Seagate Technology support services ........
- Page 5 ST3300555SS (1.5 Gbit) DC current and power vs. input/output operations per second....29 Figure 7. ST3146755SS (3 Gbit) DC current and power vs. input/output operations per second ....30 Figure 8.
- Page 6 Cheetah T10 SAS Product Manual, Rev. A...
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Page 7: Scope
Scope This manual describes Seagate Technology Cheetah drives support the SAS Protocol specifications to the extent described in this manual. The SAS Inter- face Manual (part number 100293071) describes the general SAS characteristics of Cheetah T10 and other Seagate SAS drives. - Page 8 Cheetah T10 SAS Product Manual, Rev. A...
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Page 9: Standards, Compliance And Reference Documents
Section 8.3. Standards The 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 is a UL recognized component per UL1950, CSA certified to CAN/CSA C22.2 No. 950- 95, and VDE certified to VDE 0805 and EN60950. -
Page 10: Compliance
• External modem • Mouse Although the test system with this Seagate model complies with the directives/standards, we cannot guarantee that all systems will comply. The computer manufacturer or system integrator shall confirm EMC compliance and provide the appropriate marking for their product. -
Page 11: Reference Documents
3.5” Drive Form Factor with Serial Connector HSS Backplane Design Guidelines Multi Lane Copper Connector SAS Plug Connector Serial Attached SCSI (SAS) Standard (T10/1562-D) X3.270-1996(SCSI-3) Architecture Model Seagate part number: 30553-001 Seagate P/N 30190-001 (under 100 lb.) Seagate P/N 30191-001 (over 100 lb.) - Page 12 Cheetah T10 SAS Product Manual, Rev. A...
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Page 13: General Description
General description Cheetah drives combine giant magnetoresistive (GMR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a Serial Attached SCSI (SAS) interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, net- work servers, mainframes, and supercomputers. -
Page 14: Standard Features
Standard 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 •... -
Page 15: Reliability
566,007,800 557,874,778 2. Seagate drives also may be used at the maximum available capacity at a given block size, but the excess capacity above the guaranteed level will vary between other drive families and from generation to genera- tion, depending on how each block size actually formats out for zone frequencies and splits over servo bursts. -
Page 16: Options (Factory Installed)
Options (factory installed) You may order the following items which are incorporated at the manufacturing facility during production or packaged before shipping. Some of the options available are (not an exhaustive list of possible options): • Other capacities can be ordered depending on sparing scheme and sector size requested. •... -
Page 17: Performance Characteristics
Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as measured on a representative sample of drives. Access to data = access time + latency time. Cheetah T10 SAS Product Manual, Rev. A ST3146755SS ST373355SS 146.8 73.4 Gbytes (formatted, rounded off value) -
Page 18: Format Command Execution Time (Minutes)
If the drive receives a START STOP UNIT command with the START bit and IMMED bit equal to 1 and does not receive a NOTIFY (ENABLE SPINUP) primitive within 5 seconds, the drive fails the START STOP UNIT command. ST3146755SS ST373355SS Cheetah T10 SAS Product Manual, Rev. A 55.5 Mbytes/sec... -
Page 19: Prefetch/Multi-Segmented Cache Control
The START STOP UNIT command may be used to command the drive to stop the spindle. Stop time is 30 sec- onds (maximum) from removal of DC power. There is no power control switch on the drive. Prefetch/multi-segmented cache control The drive provides a prefetch (read look-ahead) and multi-segmented cache control algorithms that in many cases can enhance system performance. -
Page 20: Caching Write Data
4.5.1 Caching write data Write caching is a write operation by the drive that makes use of a drive buffer storage area where the data to be written to the medium is stored while the drive performs the Write command. If read caching is enabled (RCD=0), then data written to the medium is retained in the cache to be made avail- able for future read cache hits. -
Page 21: Reliability Specifications
Reliability specifications The following reliability specifications assume correct host and drive operational interface, including all inter- face timings, power supply voltages, environmental requirements and drive mounting constraints. Seek error rate: Read Error Rates Recovered Data Unrecovered Data Miscorrected Data Interface error rate: MTBF Preventive maintenance: Error rate specified with automatic retries and data correction with ECC enabled and all flaws reallocated. -
Page 22: Seek Errors
5.1.3 Seek errors A seek error is defined as a failure of the drive to position the heads to the addressed track. After detecting an initial seek error, the drive automatically performs an error recovery process. If the error recovery process fails, a seek positioning error (Error code = 15h or 02h) will be reported with a Hardware error (04h) in the Sense Key. -
Page 23: Hot Plugging The Drive
5.2.3 Hot plugging the drive When a disc is powered on by switching the power or hot plugged, the drive runs a self test before attempting to communicate on its’ interfaces. When the self test completes successfully, the drive initiates a Link Reset starting with OOB. -
Page 24: Thermal Monitor
Reporting control Reporting is controlled by the MRIE bits in the Informational Exceptions Control mode page (1Ch). Subject to the reporting method, the firmware will issue to the host an 01-5Dxx sense code. The error code is preserved through bus resets and power cycles. Determining rate S.M.A.R.T. -
Page 25: Drive Self Test (Dst)
If DST encounters an error during either of these tests, it reports a fault condition. 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 “diagnostic failed”... - Page 26 DST. It is the responsibility of the host application to determine the “not ready” cause. While not technically part of DST, a Not Ready condition also qualifies the drive to be returned to Seagate as a failed drive.
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Page 27: Product Warranty
Seagate’s option and at no charge to the customer, if returned by customer at customer’s expense to Seagate’s designated facility in accordance with Seagate’s warranty procedure. - Page 28 Cheetah T10 SAS Product Manual, Rev. A...
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Page 29: Physical/Electrical Specifications
Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the drive. AC power requirements None. DC power requirements The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector. - Page 30 Table 3: DC power requirements ST3146755SS Voltage Regulation Avg idle current DCX Maximum starting current (peak DC) DC 3σ (peak AC) AC 3σ Delayed motor start (max) DC 3σ Peak operating current: Typical DCX Maximum DC 3σ Maximum (peak) DC 3σ...
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Page 31: Conducted Noise Immunity
Degrees C ambient. For +12 V, a –10% tolerance is allowed during initial spindle start but must return to ±5% before reaching 15,000 RPM. The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is able to accept selection by the host initiator. See +12V current profile in Figures 2, 3, and 4. -
Page 32: Figure 2. Typical St3300555Ss Drive Current Profiles
Figure 2. Typical ST3300555SS drive current profiles Cheetah T10 SAS Product Manual, Rev. A... -
Page 33: Figure 3. Typical St3146755Ss Drive Current Profiles
Figure 3. Typical ST3146755SS drive current profiles Cheetah T10 SAS Product Manual, Rev. A... -
Page 34: Figure 4. Typical St373355Ss Drive Current Profiles
Figure 4. Typical ST373355SS drive current profiles Cheetah T10 SAS Product Manual, Rev. A... -
Page 35: Power Dissipation
Power dissipation ST3300555SS in 3 Gbit operation Typical power dissipation under idle conditions in 3Gb operation is 14.22 watts (48.52 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 5). -
Page 36: Figure 7. St3146755Ss (3 Gbit) Dc Current And Power Vs. Input/Output Operations Per Second
1 00.0 I/Os per Second Figure 7. ST3146755SS (3 Gbit) DC current and power vs. input/output operations per second in 1.5 Gbit operation ST3146755SS Typical power dissipation under idle conditions in 1.5 Gbit operation is 10.84 watts (36.99 BTUs per hour). -
Page 37: Figure 9. St373355Ss (3 Gbit) Dc Current And Power Vs. Input/Output Operations Per Second
in 3 Gbit operation ST373355SS Typical power dissipation under idle conditions in 3Gb operation is 9.13 watts (31.15 BTUs per hour). To obtain operating power for typical random read operations, refer to the following I/O rate curve (see Figure 5). 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, and total watts on the vertical axis. -
Page 38: Environmental Limits
Non-operating –40° to 158°F (–40° to 70°C) package ambient with 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. -
Page 39: Relative Humidity
6.4.2 Relative humidity The values below assume that no condensation on the drive occurs. a. Operating 5% to 95% non-condensing relative humidity with a maximum gradient of 20% per hour. b. Non-operating 5% to 95% non-condensing relative humidity. 6.4.3 Effective altitude (sea level) a. -
Page 40: Figure 12. Recommended Mounting
>600 cu in (>9,800 cu cm) Drives packaged in 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. -
Page 41: Air Cleanliness
The sil- ver, copper, nickel and gold films used in Seagate products are especially sensitive to the presence of sulfide, chloride, and nitrate contaminants. Sulfur is found to be the most damaging. In addition, electronic components should never be exposed to condensing water on the surface of the printed circuit board assembly (PCBA) or exposed to an ambient relative humidity greater than 95%. -
Page 42: Acoustics
There will not be any discrete tones more than 10 dB above the masking noise on typical drives when mea- sured according to Seagate specification 30553-001. There will not be any tones more than 24 dB above the masking noise on any drive. -
Page 43: Defect And Error Management
Defect and error management Seagate continues to use innovative technologies to manage defects and errors. These technologies are designed to increase data integrity, perform drive self-maintenance, and validate proper drive operation. SCSI defect and error management involves drive internal defect/error management and SAS system error considerations (errors in communications between the initiator and the drive). - Page 44 The drive firmware error recovery algorithms consists of 11 levels for read recoveries and five levels for write. Each level may consist of multiple steps, where a step is defined as a recovery function involving a single re- read or re-write attempt. The maximum level used by the drive in LBA recovery is determined by the read and write retry counts.
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Page 45: Sas System Errors
SAS system errors Information on the reporting of operational errors or faults across the interface is given in the SAS Interface Manual. The SSP Response returns information to the host about numerous kinds of errors or faults. The Receive Diagnostic Results reports the results of diagnostic operations performed by the drive. Status returned by the drive to the initiator is described in the SAS Interface Manual. -
Page 46: Deferred Auto-Reallocation
DAR is most 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 reallocate the failing location and will report an error sense code indicating that a write command is being attempted to a previously failing location. -
Page 47: Installation
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 system typically provides a carrier or tray into which you need to mount the drive. -
Page 48: Cooling
Cooling Cabinet cooling must be designed by the customer so that the ambient temperature immediately surrounding the drive will not exceed temperature conditions specified in Section 6.4.1, "Temperature." The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disc assembly (HDA). -
Page 49: Drive Mounting
Drive mounting Mount the drive using the bottom or side mounting holes. If you mount the drive using the bottom holes, ensure that you do not physically distort the drive by attempting to mount it on a stiff, non-flat surface. The allowable mounting surface stiffness is 80 lb/in (14.0 N/mm). - Page 50 Cheetah T10 SAS Product Manual, Rev. A...
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Page 51: Interface Requirements
Interface requirements This section partially describes the interface requirements as implemented on Cheetah drives. Additional infor- mation is provided in the SAS Interface Manual (part number 100293071). SAS features This section lists the SAS-specific features supported by Cheetah drives. 9.1.1 task management functions Table 6 lists the SAS task management functions supported. -
Page 52: Dual Port Support
Dual port support Cheetah SAS drives have two independent ports. These ports may be connected in the same or different SCSI domains. Each drive port has a unique SAS address. The two ports run at the same link rate. The first port to successfully complete speed negotiation sets the link rate support by both ports. -
Page 53: Scsi Commands Supported
SCSI commands supported Table 8 lists the SCSI commands supported by Cheetah drives. Table 8: Commands supported by Cheetah T10 SAS family drives Command name Change Definition Compare Copy Copy and Verify Format Unit [1] DPRY bit supported DCRT bit supported STPF bit supported IP bit supported DSP bit supported... - Page 54 Table 8: Commands supported by Cheetah T10 SAS family drives (continued) Command name Non-medium Error page (06h) Pages Supported list (00h) Read Error Counter page (03h) Read Reverse Error Counter page (04h) Self-test Results page (10h) Background Medium Scan page (15h) Start-stop Cycle Counter page (0Eh) Temperature page (0Dh) Verify Error Counter page (05h)
- Page 55 Table 8: Commands supported by Cheetah T10 SAS family drives (continued) Command name Reassign Blocks Receive Diagnostic Results Supported Diagnostics pages (00h) Translate page (40h) Release Release (10) Request Sense Actual Retry Count bytes Extended Sense Field Pointer bytes Reserve 3rd Party Reserve Extent Reservation Reserve (10)
- Page 56 Table 8: Commands supported by Cheetah T10 SAS family drives (continued) Command name FUA bit Write Long Write Same PBdata LBdata XDRead XDWrite XPWrite Cheetah drives can format to 512, 520, 524, or 528 bytes per logical block. Warning. Power loss during flash programming can result in firmware corruption. This usually makes the drive inoperable.
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Page 57: Inquiry Data
Refer to the values below for the values of bytes 16 through 26 of your particular model: ST3300555SS 53 54 33 33 30 30 35 35 35 53 53 ST3146755SS 53 54 33 31 34 36 37 35 35 53 53 ST373355SS 53 54 33 37 33 33 35 35 53 53 20 9.3.2... - Page 58 Select command before the drive achieves operating speed and is “ready.” An attempt to do so results in a “Check Condition” status. On drives requiring unique saved values, the required unique saved values are stored into the saved val- ues storage location on the media prior to shipping the drive. Some drives may have unique firmware with unique default values also.
- Page 59 Table 10: ST3300555SS Mode Sense data MODE DATA HEADER: 03 fa 00 10 00 00 00 08 BLOCK DESCRIPTOR: 22 ec b2 5c 00 00 02 00 MODE PAGES: 81 0a c0 0b ff 00 00 00 05 00 ff ff 81 0a ff ff 00 00 00 00 ff 00 ff ff 82 0e 00 00 00 00 00 00 00 00 01 3a 00 00 00 00 82 0e 00 00 00 00 00 00 00 00 ff ff 00 00 00 00...
- Page 60 Table 11: ST3146755SS Mode Sense data MODE DATA HEADER: 03 fa 00 10 00 00 00 08 BLOCK DESCRIPTOR: 11 17 73 30 00 00 02 00 MODE PAGES: 81 0a c0 0b ff 00 00 00 05 00 ff ff...
- Page 61 Table 12: ST373355SS Mode Sense data MODE DATA HEADER: 03 fa 00 10 00 00 00 08 BLOCK DESCRIPTOR: 08 8b b9 98 00 00 02 00 MODE PAGES: 81 0a c0 0b ff 00 00 00 05 00 ff ff 81 0a ff ff 00 00 00 00 ff 00 ff ff 82 0e 00 00 00 00 00 00 00 00 01 3a 00 00 00 00 82 0e 00 00 00 00 00 00 00 00 ff ff 00 00 00 00...
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Page 62: Miscellaneous Operating Features And Conditions
Miscellaneous operating features and conditions Table 13 lists various features and conditions. A “Y” in the support column indicates the feature or condition is supported. An “N” in the support column indicates the feature or condition is not supported. Table 13: Miscellaneous features Supported Feature or condition... -
Page 63: Sas Physical Interface
Figure 16 shows the location of the SAS device connector J1. Figures 17 and 18 provide the dimensions of the SAS device. 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 16. -
Page 64: Figure 17. Sas Connector Dimensions
5.92 2.00 (3X) 0.30 0.05 (2X) 4.00 0.08 0.15 D 0.30 0.05 (4X) 15.875 1.27 (14X) 0.35MIN Figure 17. SAS connector dimensions 0.80 (6X) 7.62 4.65 0.45 0.03 (7X) 5.08 0.10 M E 42.73 REF. 41.13 0.15 0.20 B SEE Detail1 33.43 0.05 15.875... -
Page 65: Physical Characteristics
Detail A 6.10 2.25 0.05 4.85 0.05 0.10 B 4.40 SEE Detail 2 0.35 3.90 0.15 SECTION A - A CONTACT SURFACE FLUSH 0.08 0.05 TO DATUM A 1.23 0.05 Detail 2 0.08 0.05 2.40 Figure 18. SAS connector dimensions 9.4.2 Physical characteristics This section defines physical interface connector. -
Page 66: Electrical Description
9.4.4 Electrical description SAS drives use the device connector for: • DC power • SAS interface • Activity LED This connector is designed to either plug directly into a backpanel or accept cables. 9.4.5 Pin descriptions This section provides a pin-out of the SAS device and a description of the functions provided by the pins. Table 15: SAS pin descriptions Signal name... -
Page 67: Sas Transmitters And Receivers
9.4.6 SAS transmitters and receivers A typical SAS differential copper transmitter and receiver pair is shown in Figure 19. The receiver is AC cou- pling to eliminate ground shift noise. Differential Transmitter Transfer Medium Figure 19. SAS transmitters and receivers 9.4.7 Power The drive receives power (+5 volts and +12 volts) through the SAS device connector. -
Page 68: Differential Signals
The Ready LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +3.3 volt supply through an appropriate current limiting resistor. The LED and the current limiting resis- tor are external to the drive. See Table 17 for the output characteristics of the LED drive signals. Table 17: LED drive signal State... -
Page 69: Figure 20. Receive Eye Mask
9.5.2.1.2 Receive eye mask Figure 20 describes the receive eye mask. This eye mask applies to jitter after the application of a single pole high-pass frequency-weighting function that progressively attenuates jitter at 20 dB/decade below a frequency of ((bit rate) / 1.667). Absolute amplitude (in V) -
Page 70: Figure 22. Sinusoidal Jitter Mask
The leading and trailing edge slopes of figure 20 shall be preserved. As a result the amplitude value of Z1 is less than that given in table 20 and Z1 tion: ---------------------------------------------------------------------------------------------------------------------------------- - where: is the value for Z1 to be used for the tolerance masks; and , X1 , and X2 are the values in table 20 for Z1, X1, and X2. - Page 71 9.5.2.2 Transmitter signal characteristics Table 19 specifies the signal requirements at the transmitter end of a TxRx connection as measured into the zero-length test load. All specifications are based on differential measurements. The OOB sequence is performed at signal voltage levels corresponding to the lowest supported transfer rate. Table 19 specifies the signal characteristics.
- Page 72 9.5.2.3 Receiver signal characteristics Table 20 defines the compliance point requirements of the signal at the receiver end of a TxRx connection as measured into the test loads specified in figure 23 and figure 24. Table 20: Receiver signal characteristics Signal characteristic Jitter (see figure 20) 2 x Z2...
- Page 73 9.5.2.3.2 Receiver jitter tolerance Table 22 defines the amount of jitter the receiver shall tolerate . Table 22: Receiver jitter tolerance 1.5 Gbps Sinusoidal Deterministic e,f,h jitter jitter 0.10 0.35 a Units are in UI. b The jitter values given are normative for a combination of deterministic jitter, random jitter, and sinusoidal jitter that receivers shall be able to tolerate without exceeding a BER of 10 progressively greater amplitude at lower frequencies, according to the mask in figure 22 with the same deterministic jitter and random jitter levels as were used in the high frequency sweep.
- Page 74 Table 23: Impedance requirements (Sheet 2 of 2) Requirement Common mode impedance Transmitter source termination Differential impedance Differential impedance imbalance Common mode impedance a All times indicated for time domain reflectometer measurements are recorded times. Recorded times are twice the transit time of the time domain reflectometer signal.
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Page 75: Figure 23. Compliance Interconnect Test Load
A combination of a zero-length test load and the transmitter compliance transfer function (TCTF) test load methodology is used for the specification of transmitter characteristics. This methodology specifies the trans- mitter signal at the test points on the required test loads. The transmitter uses the same settings (e.g., pre- emphasis, voltage swing) with both the zero-length test load and the TCTF test load. -
Page 76: Figure 24. Zero-Length Test Load
Figure 24 shows the zero-length test load. 50 ohm 10 nF Probe points 10 nF 50 ohm SAS internal connector Figure 24. Zero-length test load Figure 25 shows an ISI loss example at 3.0 Gbps. (dB) Com pliance interconnect m agnitude response and ISI loss exam ple for 3.0 Gbps ISI loss >... - Page 77 9.5.2.5 Receiver characteristics The drive receiver is A.C. coupled. The receive network terminates the TxRx connection by a 100 ohm equiva- lent impedance as specified in table 23. The receiver operates within a BER of 10 when a SAS signal with valid voltage and timing characteristics is delivered to the compliance point from a 100 ohm source.
- Page 78 Cheetah T10 SAS Product Manual, Rev. A...
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Page 79: Seagate Technology Support Services
Seagate Service Centers Presales Support Our Presales Support staff can help you determine which Seagate products are best suited for your specific application or computer system, as well as product availability and compatibility. Technical Support Seagate technical support is available to assist you online at support.seagate.com or through one of our call... - Page 80 Data Recovery Services Seagate offers data recovery services for all formats and all brands of storage media. Our Data Recovery Ser- vices labs are currently located in North America. To speak with a case management representative, call 1-800-475-0143. Additional information, including an online request form and data loss prevention resources, is available at www.datarecovery.seagate.com.
- Page 81 European support services For presales and technical support in Europe, dial the Seagate Service Center toll-free number for your spe- cific location. If your location is not listed here, dial our presales and technical support call center at +1-405- 324-4714 from 8:00 .
- Page 82 Monday through Friday, except as noted. If your location is not listed here, direct dial one of our tech- nical support locations. Warranty service is available from 9:00 is available from 10:00 . to 7:00 through March (Australian Eastern time) Monday through Friday. Seagate Service Centers Call center Toll-free Australia 1800-14-7201 1, 4...
- Page 83 Index Numerics 12 volt pins 61 5 volt pins 61 abort task set function 45 AC coupling 61 AC power requirements 23 ACA active status 56 ACA active, faulted initiator status 56 acoustics 36 active LED Out signal 61 actuator assembly design 7 adaptive caching 56 AFR 9...
- Page 84 environment 42 environmental limits 32 requirements 15 environmental control 35 error management 37 rates 15 errors 37 FCC rules and regulations 3 features 8 interface 45 firmware 8 corruption 50 flawed sector reallocation 8 Format command execution time 12 function complete, code 00 45 not supported, code 05 45 reject, code 04 45...
- Page 85 noise audible 3 noise immunity 25 non-operating 33 temperature 32 non-operating vibration 35 office environment 35 operating 33 operating environment 16 option selection 60 out-of-plane distortion 43 package size 34 package test specification 5 packaged 34 parameter rounding 56 PCBA 43 peak bits per inch 11 peak operating current 23 peak-to-peak measurements 25...
- Page 86 surface stiffness allowable for non-flat surface 43 switches 41 synchronized spindle operation 56 system chassis 43 task management functions 45 Abort task set 45 Clear ACA 45 Clear task set 45 terminate task 45 task management response codes 45 Function complete 00 45 Function not supported 05 45 Function reject 04 45 task set full status 56...
- Page 88 Seagate Technology LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 100433694, Rev. A, Printed in USA...