................................................. Barracuda 18LP FC Disc Drive ................................................. ST318275FC ................................................. ST39175FC ................................................. ................................................. Product Manual, Volume 1 .................................................
................................................. Barracuda 18LP FC Disc Drive ................................................. ST318275FC ................................................. ST39175FC ................................................. ................................................. Product Manual, Volume 1 .................................................
© 1998-2000 Seagate Technology, LLC All rights reserved August 2000 Publication number: 77767541, Rev. B Seagate, Seagate Technology, and the Seagate logo are registered trademarks of Seagate Technology, LLC. Barracuda, SeaFAX, SeaFONE, SeaBOARD, and SeaTDD are either trademarks or registered trademarks of Seagate Technology, LLC, or one of its subsidiaries. All other trademarks or registered trademarks are the property of their respective owners.
Revision status summary sheet Revision Date Writer/Engineer Sheets Affected A B 4/28/99 08/22/2000 L. Newman/J. Bentley K. Schweiss/B. Reynolds 1/1, v thru viii, 1 thru 68.
Barracuda 18LP FC Product Manual, Rev. B v Contents 1.0 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Applicable standards and reference documentation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1 Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.1.
vi Barracuda 18LP FC Product Manual, Rev. B 6.5 6.4.3 Effective altitude (sea level) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 6.4.4 Shock and vibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24 6.4.5 Air cleanliness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27 6.4.6 Acoustics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Barracuda 18LP FC Product Manual, Rev. B vii List of Figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Barracuda 18LP FC family disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Barracuda 18LP FC disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Barracuda 18LP FC Product Manual, Rev. B 1.0 1 Scope This manual describes Seagate Technology® , LLC. Barracuda 18LP FC (Fibre Channel) disc drives. Barracuda 18LP FC drives support the Fibre Channel Arbitrated Loop and SCSI Fibre Channel Protocol specifications to the extent described in this manual. The Fibre Channel Interface Manual (part number 77767496) describes the general Fibre Channel Arbitrated Loop characteristics of this and other Seagate Fibre Channel drives. Figure 1.
Barracuda 18LP FC Product Manual, Rev. B 2.0 3 Applicable standards and reference documentation The drive has been developed as a system peripheral to the highest standards of design and construction. The drive depends upon its host equipment to provide adequate power and environment in order to achieve optimum performance and compliance with applicable industry and governmental regulations.
4 Barracuda 18LP FC Product Manual, Rev. B Australian C-Tick If this model has the C-Tick Marking it complies with the Australia/New Zealand Standard AS/NZS3548 1995 and meets the Electromagnetic Compatibility (EMC) Framework requirements of Australia’s Spectrum Management Agency (SMA). 2.2 Reference documents Barracuda 18LP FC Installation Guide Seagate part number: 77767542 Fibre Channel Interface Manual Seagate part number: 77767496 ANSI Fibre Channel Documents X3.
Barracuda 18LP FC Product Manual, Rev. B 3.0 5 General description TM Barracuda 18LP FC drives combine soft adjacent layer (SAL) magnetoresistive (MR) heads, partial response/maximum likelihood (PRML) read channel electronics, embedded servo technology, and a Fibre Channel interface to provide high performance, high capacity data storage for a variety of systems including engineering workstations, network servers, mainframes, and supercomputers.
6 Barracuda 18LP FC Product Manual, Rev. B 3.
Barracuda 18LP FC Product Manual, Rev. B 7 • Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.) • Dithering 3.5 Unformatted and formatted capacities Formatted capacity depends on the spare reallocation sectors scheme selected, the number of data tracks per sparing zone, and the number of alternate sectors (LBAs) per sparing zone. The following table shows the standard OEM model read capacity data. Total LBAs = read capacity data shown below + 1.
Barracuda 18LP FC Product Manual, Rev. B 4.0 9 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Barracuda 18LP FC drives. 4.1 Internal drive characteristics Drive capacity Read/write data heads Bytes per track Bytes per surface Tracks per surface (total) Tracks per inch Peak bits per inch Internal data rate Disc rotation speed Avg rotational latency 4.2 ST39175FC .............. ST318275FC 9.1 .......................
10 4.2.3 Barracuda 18LP FC Product Manual, Rev. B General performance characteristics ST318275FC Minimum sector interleave 1 to 1 Data buffer transfer to/from disc media (one 512-byte logical block)* Minimum Average Maximum 16.2 MBytes/sec 25.3 MBytes/sec 28.
Barracuda 18LP FC Product Manual, Rev. B 4.5 Note. 11 Cache operation Refer to the Fibre Channel Interface Manual for more detail concerning the cache bits. Of the 1,024 kbytes physical buffer space in the drive, 924 kbytes can be used as a cache. The buffer can be divided into logical segments (using Mode Select Page 08h, byte 13) from which data is read and to which data is written. The drive keeps track of the logical block addresses of the data stored in each segment of the buffer.
12 Barracuda 18LP FC Product Manual, Rev. B If the number of write data logical blocks exceed the size of the segment being written into, when the end of the segment is reached, the data is written into the beginning of the same cache segment, overwriting the data that was written there at the beginning of the operation; however, the drive does not overwrite data that has not yet been written to the medium.
Barracuda 18LP FC Product Manual, Rev. B 5.0 13 Reliability specifications The following reliability specifications assume correct host and drive operational interface, including all interface timings, power supply voltages, environmental requirements and drive mounting constraints Seek error rate: Read Error Rates1 Recovered Data Unrecovered Data Miscorrected Data Interface error rate: MTBF: Service life: Preventive maintenance: 1.
14 Barracuda 18LP FC Product Manual, Rev. B error (15h) is reported with a Medium error (3h) or Hardware error (4h) reported in the Sense Key. This is an unrecoverable seek error. Unrecoverable seek errors are classified as failures for MTBF calculations. Refer to the Fibre Channel Interface Manual, part number 77767496, for Request Sense information. 5.2 Reliability and service You can enhance the reliability of Barracuda 18LP FC disc drives by ensuring that the drive receives adequate cooling.
Barracuda 18LP FC Product Manual, Rev. B 15 Failure rate is calculated as follows: • • • • No system-induced failures counted PPM targets include 30% no defect found and handling failures Based on 1,000,000 MTBF and 720 POH per month Month 1’s rate includes a 300 PPM installation failure 5.2.3 Preventive maintenance No routine scheduled preventive maintenance is required. 5.2.4 Service life The drive has a useful service life of five years.
16 5.2.8 Barracuda 18LP FC Product Manual, Rev. B S.M.A.R.T. S.M.A.R.T. is an acronym for Self-Monitoring Analysis and Reporting Technology. This technology is intended to recognize conditions that indicate imminent drive failure and is designed to provide sufficient warning of a failure to allow you to back up the data before an actual failure occurs. Note. The drive’s firmware monitors specific attributes for degradation over time but can’t predict instantaneous drive failures.
Barracuda 18LP FC Product Manual, Rev. B 17 Predictive failures S.M.A.R.T. signals predictive failures when the drive is performing unacceptably for a period of time. The firmware keeps a running count of the number of times the error rate for each attribute is unacceptable. To accomplish this, a counter is incremented each time the error rate is unacceptable and decremented (not to exceed zero) whenever the error rate is acceptable.
Barracuda 18LP FC Product Manual, Rev. B 6.0 19 Physical/electrical specifications This section provides information relating to the physical and electrical characteristics of the drive. 6.1 AC power requirements None. 6.2 DC power requirements The voltage and current requirements for a single drive are shown below. Values indicated apply at the drive connector.
20 Barracuda 18LP FC Product Manual, Rev. B 6.2.1 Conducted noise immunity Noise is specified as a periodic and random distribution of frequencies covering a band from DC to 10 MHz. Maximum allowed noise values given below are peak-to-peak measurements and apply at the drive power connector. 0 to 100 kHz 100 kHz to 10 MHz 6.2.2 +5V +12V (with spindle motor not running) 150mV 100mV 150mV 100mV Power sequencing The drive does not require power sequencing.
Barracuda 18LP FC Product Manual, Rev. B 21 +5 Volt Current during spindle start – Typical Amperes 1.2 1.0 Amps 0.8 Nominal (average) DC curve AC component 0.6 0.4 0.2 0.0 0.0 Figure 4. 5.0 10.0 15.0 20.0 25.0 TIME (seconds) Typical Barracuda 18LP FC drive +5V current profile 30.0 35.0 40.0 45.
22 Barracuda 18LP FC Product Manual, Rev. B 6.3 Power dissipation ST318275FC To obtain typical operating random read (8 blocks) power dissipation at nominal voltages, refer to Figure 5. The drive user must decide what number of I/O operations constitutes a typical number of I/O operations for their installation. To calculate BTUs per hour, multiply watts by 3.4123. Typical power dissipation under idle conditions is 11.3 Watts (38.5 BTUs per hour). 1.4 5V A 12V A Watts 1.2 Amperes 1.0 16 0.
Barracuda 18LP FC Product Manual, Rev. B 6.4.1 23 Temperature a. Operating With cooling designed to maintain the case temperatures of Table 2, the drive meets all specifications over a 41°F to 122°F (5°C to 50°C) drive ambient temperature range with a maximum temperature gradient of 36°F (20°C) per hour. The enclosure for the drive should be designed such that the temperatures at the locations specified in Table 2 are not exceeded.
24 Barracuda 18LP FC Product Manual, Rev. B HDA Temp. Check Point .5" 4 1 2 3 Figure 7. Locations of PCBA components listed in Table 2 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 10% per hour. b. Non-operating 5% to 95% non-condensing relative humidity. 6.4.3 Effective altitude (sea level) a. Operating –1,000 to +10,000 feet (–305 to +3,048 meters) b.
Barracuda 18LP FC Product Manual, Rev. B 25 The limits of shock and vibration defined within this document are specified with the drive mounted by any of the four methods shown in Figure 8, and in accordance with the restrictions of Section 8.5. Orientation of the side nearest the LED may be up or down. 6.4.4.1 Shock a. Operating—normal The drive, as installed for normal operation, shall operate error free while subjected to intermittent shock not exceeding 5.
26 Barracuda 18LP FC Product Manual, Rev. B Z X Y X Figure 8.
Barracuda 18LP FC Product Manual, Rev. B 6.4.4.2 27 Vibration a. Operating - normal The drive as installed for normal operation, shall comply with the complete specified performance while subjected to continuous vibration not exceeding 2-22 Hz @ 0.02 inches (0.5 mm) displacement 5-350 Hz @ 0.5 G Vibration may be applied in the X, Y, or Z axis. b.
28 Barracuda 18LP FC Product Manual, Rev. B 6.5 Mechanical specifications Refer to Figure 9 for detailed mounting configuration dimensions. See Section 8.5, “Drive mounting.” Height: Width: Depth: Weight: 1.000 in 4.000 in 5.75 in 1.3 pounds (ST318203) 25.4 mm 101.6 mm 146.05 mm 0.589 kilograms B H 1.875±.005 1.875±.005 F Notes: [1] Mounting holes three on each side, 6-32 UNC. Max screw length into side of drive is 0.15 in. (3.81 mm). [1] D [2] Mounting holes four on bottom, 6-32 UNC.
Barracuda 18LP FC Product Manual, Rev. B 7.0 29 Defect and error management The drive, as delivered, complies with this product manual. The read error rates and specified storage capacities are not dependent upon use of defect management routines by the host (initiator). Defect and error management in the SCSI protocol involves the drive internal defect/error management and FC-AL system error considerations (errors in communications between the initiator and the drive).
30 Barracuda 18LP FC Product Manual, Rev. B When the RC bit is one, reallocations are disabled even if the ARRE or AWRE bits are one. The drive will still perform data recovery actions within the limits defined by the Read Retry Count, Write Retry Count, and Recovery Time Limit parameters. However, the drive does not report any unrecovered errors.
Barracuda 18LP FC Product Manual, Rev. B 8.0 31 Installation Barracuda 18LP FC disc drive installation is a plug-and-play process. There are no jumpers, switches, or terminators on the drive. Simply plug the drive into the host’s 40-pin Fibre Channel backpanel connector (FCSCA)—no cables are required. See Section 9.5 for additional information about this connector. Use the FC-AL interface to select drive ID and all option configurations for devices on the loop.
32 Barracuda 18LP FC Product Manual, Rev. B Drive Front Pin 1 J6 Reserved Port A Bypass LED [1] Port B Bypass LED [1] Fault LED [1] Reserved Active LED [2] Reserved +5V Active LED [1] Ground [3] Figure 11. 8.2.1 [1] The drive has a 2.2K ohm resistor in series with this LED driver. Tie the minus side of an external high-efficiency LED (i.e., 2ma) to this pin. Connect the plus side of the LED to +5V. [2] An external current-limiting resistor is required when connecting an LED to this pin.
Barracuda 18LP FC Product Manual, Rev. B 8.4.1 33 Air flow The rack, cabinet, or drawer environment for the drive must provide heat removal from the electronics and head and disc assembly (HDA). You should confirm that adequate heat removal is provided using the temperature measurement guidelines described in Section 6.4.1.
34 8.5 Barracuda 18LP FC Product Manual, Rev. B 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). The following equation and paragraph define the allowable mounting surface stiffness: K x X = F < 80lb = 14.
Barracuda 18LP FC Product Manual, Rev. B 9.0 35 Interface requirements This section partially describes the interface requirements as implemented on ST318275FC and ST39175FC drives. Additional information is provided in the Fibre Channel Interface Manual (part number 77767496). 9.1 FC-AL features This section lists the Fibre Channel-specific features supported by Barracuda 18LP FC drives. 9.1.1 Fibre Channel link service frames Table 4 lists the link services supported by Barracuda 18LP FC drives.
36 Barracuda 18LP FC Product Manual, Rev. B 9.1.4 Fibre Channel port login Table 7 identifies the required content of the N_Port Login (PLOGI) payload from an initiator.
Barracuda 18LP FC Product Manual, Rev. B 9.1.5 37 Fibre Channel port login accept Table 8 identifies the N_Port Login access payload values.
38 Barracuda 18LP FC Product Manual, Rev. B 9.1.8 Fibre Channel fabric login Table 11 lists the fabric login payload from the drive.
Barracuda 18LP FC Product Manual, Rev. B 9.1.9 39 Fibre Channel fabric accept login Table 11 lists the required content of the Fabric Login Accept (ACC) payload from the fabric.
40 Barracuda 18LP FC Product Manual, Rev. B 9.1.10 Fibre Channel Arbitrated Loop options Table 13 lists the FC-AL options supported by Barracuda 18LP FC drives. Table 13: FC-AL options supported Option Supported OPEN Half Duplex Accepted from another device. OPEN Full Duplex Sent to open another device. Accepted from another device. Private Loop Yes Public Loop Yes Old Port State No Loop Position Yes Loop Position Report Yes 9.
Barracuda 18LP FC Product Manual, Rev. B 9.3 SCSI commands supported Table 14 lists the SCSI commands that ST318275FC drives support.
42 Table 14: Barracuda 18LP FC Product Manual, Rev.
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44 Barracuda 18LP FC Product Manual, Rev.
Barracuda 18LP FC Product Manual, Rev. B 9.3.1 45 Inquiry data Table 15 lists the Inquiry command data that the drive should return to the initiator per the format given in the Fibre Channel Interface Manual.
46 Barracuda 18LP FC Product Manual, Rev. B 4. Changeable values Changeable values form a bit mask, stored in nonvolatile memory, that dictates which of the current values and saved values can be changed by a Mode Select command. A one (1) indicates the value can be changed. A zero (0) indicates the value is not changeable. For example, in Table 17, refer to Mode page 81, in the row entitled “CHG.” These are hex numbers representing the changeable values for Mode page 81.
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48 Table 17: Barracuda 18LP FC Product Manual, Rev.
Barracuda 18LP FC Product Manual, Rev. B 9.4 49 Miscellaneous operating features and conditions Table 18 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.
50 9.5 Barracuda 18LP FC Product Manual, Rev. B FC-AL physical interface Figure 13 shows the location of the J1 Fibre Channel single connection attachment (FC-SCA) and the J6 connector. Figure 15 provides the dimensions of the FC-SCA. Figure 16 provides the dimensions of the J6 connector. Details of the physical, electrical, and logical characteristics are provided within this section. The operational aspects of Seagate’s Fibre Channel drives are provided in the Fibre Channel Interface Manual..
Barracuda 18LP FC Product Manual, Rev. B 9.5.2 51 Connector requirements Recommended mating SCA part number: Part description Positions Part number Features AMP Vertical (SCA sequence) 40 787317-1 With polarization Berg 40 71781 With polarization Methode 40 512-220-91-101N With polarization Molex 40 717431040 With polarization The FC-AL SCA device connector is illustrated in Figure 15. The J6 connector is illustrated in Figure 16. 1.618 ± .003 in (41.1 ± 0.
52 Barracuda 18LP FC Product Manual, Rev. B 9.5.3 Electrical description Fibre Channel drives use the FC-SCA connector for: • • • • • DC power FC-AL interface Drive select (device identification) Option selection Enclosure Services interface This 40-pin connector is designed to plug directly into a backpanel. External cables are not required. 9.5.4 Pin descriptions This section provides a pin-out of the FC-SCA and a description of the functions provided by the pins.
Barracuda 18LP FC Product Manual, Rev. B 9.5.5 53 FC-AL transmitters and receivers A typical FC-AL differential copper transmitter and receiver pair is shown in Figure 17. The receiver is required to provide the AC coupling to eliminate ground shift noise. .01µf 68 TX Transmitter TY RX 150 Differential Transfer Medium 9.5.6 Receiver RY 68 .01µf 150 Figure 17. 150 FC-AL transmitters and receivers Power Power is supplied through the FC-SCA with support for +5 volts and +12 volts.
54 Barracuda 18LP FC Product Manual, Rev. B The Active LED Out signal is designed to pull down the cathode of an LED. The anode is attached to the proper +5 volt supply through an appropriate current limiting resistor. The LED and the current limiting resistor are external to the drive. 9.5.9 Enable port bypass signals The – Enable Bypass Port A (– EN BYP Port A ) and – Enable Bypass Port B (– EN BYP Port B) signals control the port bypass circuits (PBC) located external to the disc drive.
Barracuda 18LP FC Product Manual, Rev. B 9.5.11.1 55 Parallel Enclosure Services Interface (ESI) The parallel ESI line is an output from the drive. This line provides the enclosure with an indication of the present function of the SEL lines. A high level, the default state, indicates the drive requires address information on the SEL lines. A low level indicates the drive is attempting an ESI transfer. The enclosure may not support ESI on any or all drive locations.
56 Table 23: Barracuda 18LP FC Product Manual, Rev.
Barracuda 18LP FC Product Manual, Rev. B 9.6 57 Signal characteristics This section describes the electrical signal characteristics of the drive’s input and output signals. See Table 20 on page 52 for signal type and signal name information. 9.6.1 TTL input characteristics Table 24 provides the TTL characteristics. Table 24: TTL characteristics State Voltage Current Input high 1.9 < VIH < 5.5V IIH = ±500nA max. Input low -0.5V < VIL < 0.9V IOL = ±500nA max. Output high (-EN Bypass A, B) 2.
58 Barracuda 18LP FC Product Manual, Rev. B Figure 18 provides the data output valid eye diagram relative to the bit cell time. Vout (mv) 941 ps 800 ps Figure 18. 9.6.4 Transmit eye diagram Differential PECL input The serial PECL input signal voltage characteristics are provided in Table 27.
Barracuda 18LP FC Product Manual, Rev. B 10.0 59 Seagate Technology support services Online Services Internet www.seagate.com for information about Seagate products and services. Worldwide support is available 24 hours daily by e-mail for your disc or tape questions. Presales Support: Disc: http://www.seagate.com/support/email/email_presales.html or DiscPresales@Seagate.com. Tape: http://www.seagate.com/support/email/email_tape_presales.html or Tape_Sales_Support@Seagate.com.
60 Barracuda 18LP FC Product Manual, Rev. B Technical Support If you need help installing your drive, consult your dealer. Dealers are familiar with their unique system configurations and can help you with system conflicts and other technical issues. If you need additional help, you can talk to a Seagate technical support specialist. Before calling, note your system configuration and drive model number (ST####). SeaTDD™ (+1-405-936-1687) is a telecommunications device for the deaf (TDD).
Barracuda 18LP FC Product Manual, Rev. B 61 European Support Services For European customer support, dial the toll-free number for your specific country for presales support, technical support, SeaFAX and warranty service. If your country is not listed here, dial our European call center at +31-20-316-7222 from 8:30 A.M. to 5:00 P.M. (European central time) Monday through Friday. The European call center is located in Amsterdam, The Netherlands.
Barracuda 18LP FC Product Manual, Rev.
64 read/write 9 data rate internal 9 data transfer rate 10 data valid eye 58 Date code page command 41 DC power 52 requirements 19 DCRT bit 41 defect and error management 29 deferred error handling 49 description 5 Device behavior page 41 device selection IDs 31 devices 31 differential PECL input 58 dimensions 28 Disable page out command 42 disc rotation speed 9 Disconnect/reconnect control (page 02h) command 41 Download microcode and save modes (5) 43 Download microcode mode (4) 43 Download microcode with
Barracuda 18LP FC Product Manual, Rev. B Force unit access command 42 form factor 6 format 31 Format command execution time 9 Format page (03h) command 41 Format unit command 41 FS 36, 37, 39 function complete, code 00 35 not supported, code 05 35 reject, code 04 35 G Good status 49 gradient 23, 24 ground shift noise 53 grounding 34 H hard assigned arbitrated loop physical address (AL_PA) 31 HDA 23, 33, 34 temperature 23 head and disc assembly (HDA) 5 head and disc assembly.
66 Reporting actual retry count 49 Segmented caching 49 SMP = 1 in Mode Select command 49 Synchronized (locked) spindle operation 49 Zero latency read 49 miscellaneous status support ACA active 49 ACA active, faulted initiator 49 Busy 49 Check condition 49 Condition met/good 49 Good 49 Intermediate/condition met/good 49 Intermediate/good 49 Reservation conflict 49 Task set full 49 miscorrected media data 13 Mode select (10) command 43 command 41 Mode sense (10) command 44 command 41 data, table 45, 47, 48 m
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68 Barracuda 18LP FC Product Manual, Rev. B shipping 17 shipping container 23 shock 25 and vibration 24, 25 shock mount 34 signal characteristics 57 LED driver 57 single-unit shipping pack kit 7 SMART 7, 16 SMP = 1 in Mode Select command 49 SO 36, 39 spindle brake 6 Stacked connection req.
Seagate Technology, LLC 920 Disc Drive, Scotts Valley, California 95066-4544, USA Publication Number: 77767541, Rev.
