Product Manual Momentus Blade Server ® ST94811AB 100339697 Rev.
©2004-2007, Seagate Technology LLC All rights reserved. Publication number: 100339697, Rev. B August 2007 Seagate, Seagate Technology and the Wave logo are registered trademarks of Seagate Technology LLC in the United States and/or other countries. Momentus, SeagateSeaBOARD, SeaFONE, SeaTDD, and SeaTools are either trademarks or registered trademarks of Seagate Technology LLC or one of its affiliated companies in the United States and/ or other countries.
Contents 1.0 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.0 Drive specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.1 Specification summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2.2 Formatted capacity . . . . . . . . . . . . . . . . . . . . . . .
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List of Figures Figure 1. Figure 2. Figure 3. Figure 4. Momentus disc drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Typical 5V startup and operation current profile . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Jumper settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Mounting dimensions—top, side and end view . . . . . . . .
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1.0 Introduction This manual describes the functional, mechanical and interface specifications for the Seagate® Momentus™ Blade Server drive: • ST94811AB These drives provide the following key features: • 5,400-RPM spindle speed and 8 Mbytes combine for superior performance. • Quiet operation. Fluid Dynamic Bearing (FDB) motor. • High instantaneous (burst) data transfer rates (up to 100 Mbytes per second) using Ultra DMA mode 5. • Tunneling Magnetoresistive (TMR) recording heads.
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2.0 Drive specifications Unless otherwise noted, all specifications are measured under ambient conditions, at 25°C, and nominal power. For convenience, the phrases the drive and this drive are used throughout this manual to indicate ST94811AB model drives. 2.1 Specification summary The specifications listed in this table are for quick reference. For details on specification measurement or definition, see the appropriate section of this manual.
Table 1: Specifications (Continued) Drive specification ST94811AB Full-stroke seek (msec) 22 (typical); 26 (max) Seek power (typical) 2.4 watts Read/write power (typical) 2.4 watts Idle, performance mode (typical) 2.5 watts Standby mode 0.36 watts (typical)** Sleep mode 0.
2.2 Formatted capacity Model Formatted capacity Guaranteed sectors Bytes per sector ST94811AB 40 Gbytes 78,140,160 512 2.3 Default logical geometry Cylinders Read/write heads Sectors per track 16,383 16 63 LBA mode When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to n–1, where n is the number of guaranteed sectors as defined above. 2.4 Physical organization Model Read/write heads Number of discs ST94811AB 2 1 2.
2.6 Physical characteristics Height (mm) (inches) 9.5 +/–0.2 0.374 +/–0.0078 Width (mm) (inches) 69.85 +/–0.25 2.75 +/–0.0098 Length (mm) (inches) 100.2 +/–0.25 3.945 +/–0.0098 Typical weight (grams) (pounds) 99 0.218 2.7 Seek time Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics.
2.9 Power specifications The drive receives DC power (+5V) through the interface connector. 2.9.1 Power consumption Power requirements for the drives are listed in the table on page 7. Typical power measurements are based on an average of drives tested, under nominal conditions, using 5.0V input voltage at 25°C ambient temperature. • Spinup power Spinup power is measured from the time of power-on to the time that the drive spindle reaches operating speed.
2.9.1.1 Typical current profile +5 Volt Current during spindle start — Typical Amperes 1.2 1.0 0.8 Amps 0.6 0.4 0.2 0.0 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 Seconds Figure 2. Typical 5V startup and operation current profile 2.9.2 Conducted noise Input noise ripple is measured at the host system power supply across an equivalent 15-ohm resistive load on the +5 volt line.
2.10 Environmental specifications 2.10.1 Ambient temperature Ambient temperature is defined as the temperature of the environment immediately surrounding the drive. Actual drive case temperature should not exceed 40°C (104°F) within the operating ambient conditions. Above 1,000 feet (305 meters), the maximum temperature is derated linearly by 1°C every 1000 feet. Operating Nonoperating 2.10.
2.10.5 Shock All shock specifications assume that the drive is mounted securely with the input shock applied at the drive mounting screws. Shock may be applied in the X, Y, or Z axis. 2.10.5.1 Operating shock These drives comply with the performance levels specified in this document when subjected to a maximum operating shock of 225 Gs based on half-sine shock pulses of 2 msec. Shocks should not be repeated more than two times per second. 2.10.5.
2.11 Acoustics Drive acoustics are measured as overall A-weighted acoustic sound power levels (no pure tones). All measurements are consistent with ISO document 7779. Sound power measurements are taken under essentially free-field conditions over a reflecting plane. For all tests, the drive is oriented with the cover facing upward. Note. For seek mode tests, the drive is placed in seek mode only. The number of seeks per second is defined by the following equation: (Number of seeks per second = 0.
2.13 Reliability Measurement type Specification Nonrecoverable read errors 1 per 1014 bits read, max. Mean time between failures 500,000 power-on hours (8,760 POH/year) At nominal power, 25°C ambient temperature. Max case temperature: 40°C at the case measurement location shown in Figure 4.
Korean RRL If these drives have the Korea Ministry of Information and Communication (MIC) logo, they comply with paragraph 1 of Article 11 of the Electromagnetic Compatibility control Regulation and meet the Electromagnetic Compatibility (EMC) Framework requirements of the Radio Research Laboratory (RRL) Ministry of Information and Communication Republic of Korea. These drives have been tested and comply with the Electromagnetic Interference/Electromagnetic Susceptibility (EMI/EMS) for Class B products.
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3.0 Configuring and mounting the drive This section contains the specifications and instructions for configuring and mounting the drive. 3.1 Handling and static discharge precautions After unpacking, and before installation, the drive may be exposed to potential handling and electrostatic discharge (ESD) hazards.
3.2.2 Cable-select option Computers that use cable select determine the master and slave drives by selecting or deselecting pin 28, CSEL, on the interface bus. Master and slave drives are determined by their physical position on the cable. To enable cable select, set a jumper as shown in Figure 3. Refer to your computer manual to determine whether your computer supports this option. 3.
4.0 ATA interface These drives use the industry-standard ATA task file interface that supports 16-bit data transfers. It supports ATA programmed input/output (PIO) modes 0–4; multiword DMA modes 0–2, and Ultra DMA modes 0–5. The drive also supports the use of the IORDY signal to provide reliable high-speed data transfers.
4.1.1 Supported ATA commands The following table lists ATA-standard commands that the drive supports. For a detailed description of the ATA commands, refer to the Draft ATA-6 Standard. See “S.M.A.R.T commands” on page 24 for details and subcommands used in the S.M.A.R.T. implementation.
Table 6: Supported commands (Continued) Command name Command code (in hex) Security Unlock F2H Seek 70H Set Drive Parameters 91H Set Features EFH Set Max Address F9H Note: Individual Set Max commands are identified by the value placed in the Set Max Features register as defined to the right. Address: Password: Lock: Unlock: Freeze Lock: Set Multiple Mode C6H Sleep 99H, E6H S.M.A.R.T.
Table 6: Supported commands (Continued) Command name Command code (in hex) Security Freeze Lock F5H Security Disable Password F6H 4.1.2 Identify Device command The Identify Device command (command code ECH) transfers information about the drive to the host following power up. The data is organized as a single 512-byte block of data, whose contents are shown in the table on page 27. All reserved bits or words should be set to zero.
Word Description Value 55 Number of current logical heads xxxxH 56 Number of current logical sectors per logical track xxxxH 57–58 Current capacity in sectors xxxxH 59 Number of sectors transferred during a Read Multiple or Write Multiple command xxxxH 60–61 Total number of user-addressable LBA sectors available (see Section 2.
Word Description Value 160– 254 ATA-reserved 0000H 255 Integrity word xxA5H Note. See the bit descriptions below for words 63, 88, 93 and 94 of the Identify Drive data: Description (if bit is set to 1) 22 Bit Word 63 0 Multiword DMA mode 0 is supported. 1 Multiword DMA mode 1 is supported. 2 Multiword DMA mode 2 is supported. 8 Multiword DMA mode 0 is currently active. 9 Multiword DMA mode 1 is currently active. 10 Multiword DMA mode 2 is currently active.
4.1.3 Set Features command This command controls the implementation of various features that the drive supports. When the drive receives this command, it sets BSY, checks the contents of the Features register, clears BSY and generates an interrupt. If the value in the register does not represent a feature that the drive supports, the command is aborted. Power-on default has the read look-ahead and write caching features enabled.
4.1.4 S.M.A.R.T. commands S.M.A.R.T. provides near-term failure prediction for disc drives. When S.M.A.R.T. is enabled, the drive monitors predetermined drive attributes that are susceptible to degradation over time. If self-monitoring determines that a failure is likely, S.M.A.R.T. makes a status report available to the host. Not all failures are predictable. S.M.A.R.T. predictability is limited to the attributes the drive can monitor. For more information on S.M.A.R.T.
5.0 Seagate Technology support services Internet For information regarding Seagate products and services, visit www.seagate.com. Worldwide support is available 24 hours daily by email for your questions. Presales Support: Presales@Seagate.com Technical Support: DiscSupport@Seagate.com Warranty Support: http://www.seagate.com/support/service/index.html mySeagate my.seagate.com is the industry's first Web portal designed specifically for OEMs and distributors.
Customer Service Operations Warranty Service Seagate offers worldwide customer support for Seagate products. 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 products should contact their place of purchase or Seagate warranty service for assistance. Have your serial number and model or part number available.
Index Numerics 3D Defense System 1 A acoustics 11 agency certification (regulatory) 12 altitude 9 ambient conditions 3 ambient temperature 6, 9 areal density 5 ATA interface 17 ATA-standard commands 18 Australian C-Tick 13 autodetection 1 average seek time 6 B BPI 5 buffer 5 burst 1 C cable select 1 cable-select option 16 cache 1, 5 case temperature 9 CE mark 12 certification 12 Check Power Mode 19 commands 18 compliance 12 conducted noise 8 conducted RF immunity 11 configuring the drive 15 connector pin
interleave 5 internal data-transfer rate OD 5 ISO document 7779 11 J jumper settings 15 K Korean RRL 13 L LBA mode 5 length 6 Load/Unload 12 logical geometry 5 M master/slave 1 Master/slave configuration 15 maximum temperature 9 Mean time between failures (MTBF) 12 modes 17 monitoring 1 mounting the drive 15, 16 N noise 8 nominal power 3 nonoperating shock 10 nonoperating vibration 10 nonrecoverable read errors 12 O operating 7 operating power and current 7 operating shock 10 operating vibration 10 P
shock 10 signals 17 single-track seeks 6 Sleep 7, 19 sound 11 specifications 3 spindle speed 5 Spinup 7 spinup power 7 Standby 7, 19 Standby Immediate 19 Standby mode 7 Standby to Ready 6 static-discharge precautions 15 subassembly 13 support services 25 surge immunity 11 T technical support services 25 temperature 9 temperature gradient 9 time to ready 6 TMR 1 track density 5 track-to-track seek time 6 TUV North America 12 U UL 1950 12 V vibration 10 voltage 8 voltage dips, interrupts 11 voltage toleran
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