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... Memory Access ECC error correction code EEC European Economic Community EMC electromagnetic compatibility ERP Error Recovery Procedure ESD Electrostatic Discharge Deskstar T7K250 Hard Disk Drive Specification 1 AT Attachment with ATA interface and a rotational speed of the Deskstar T7K250, a 3.5-inch hard disk drive with Packet Interface-7. • Serial ATA II: Extensions to change without notice. 1.2 References • Information Technology...
... Memory Access ECC error correction code EEC European Economic Community EMC electromagnetic compatibility ERP Error Recovery Procedure ESD Electrostatic Discharge Deskstar T7K250 Hard Disk Drive Specification 1 AT Attachment with ATA interface and a rotational speed of the Deskstar T7K250, a 3.5-inch hard disk drive with Packet Interface-7. • Serial ATA II: Extensions to change without notice. 1.2 References • Information Technology...
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... Commission field replacement unit gravity (a unit of force) (32 ft/sec)2 per Hertz 1,000,000,000 bits 1,000,000,000 bytes ground hexadecimal hard disk drive Hertz Input integrated lead suspension Input/Output International Standards Organization 1,000 bytes 1000 bits per inch kilogram (force)-centimeter kilohertz logical block addressing unit of...hours population part number peak-to-peak power spectral density radiated electromagnetic susceptibility radio frequency interference relative humidity root mean square revolutions per minute reset Deskstar T7K250 Hard Disk Drive Specification 2
... Commission field replacement unit gravity (a unit of force) (32 ft/sec)2 per Hertz 1,000,000,000 bits 1,000,000,000 bytes ground hexadecimal hard disk drive Hertz Input integrated lead suspension Input/Output International Standards Organization 1,000 bytes 1000 bits per inch kilogram (force)-centimeter kilohertz logical block addressing unit of...hours population part number peak-to-peak power spectral density radiated electromagnetic susceptibility radio frequency interference relative humidity root mean square revolutions per minute reset Deskstar T7K250 Hard Disk Drive Specification 2
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...cover the breathing hole on the top cover. • Do not touch the interface connector pins or the surface of the user. Deskstar T7K250 Hard Disk Drive Specification 3 R/W read/write sec second SELV secondary low voltage S.M.A.R.TSelf-Monitoring, Analysis, and Reporting Technology TPI tracks per inch Trk ... Verband Deutscher Electrotechniker W watt 3-state transistor-transistor tristate logic 1.4 Caution • Do not apply force to the drive after its removal from the shipping package and the ESD protective bag are the responsibility of the printed circuit board • This...
...cover the breathing hole on the top cover. • Do not touch the interface connector pins or the surface of the user. Deskstar T7K250 Hard Disk Drive Specification 3 R/W read/write sec second SELV secondary low voltage S.M.A.R.TSelf-Monitoring, Analysis, and Reporting Technology TPI tracks per inch Trk ... Verband Deutscher Electrotechniker W watt 3-state transistor-transistor tristate logic 1.4 Caution • Do not apply force to the drive after its removal from the shipping package and the ESD protective bag are the responsibility of the printed circuit board • This...
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Deskstar T7K250 Hard Disk Drive Specification 4
Deskstar T7K250 Hard Disk Drive Specification 4
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2.0 General features of the drive • Formatted capacities of 160 GB, 200 GB, 250 GB • Spindle speeds of 7200 RPM • Fluid Dynamic Bearing motor • Enhanced IDE interface ...; Quiet Seek mode (AAM) • 48-bit addressing feature • ATA-7 compliant • UDMA 133 support • Streaming feature set support • World Wide Name Deskstar T7K250 Hard Disk Drive specification 5
2.0 General features of the drive • Formatted capacities of 160 GB, 200 GB, 250 GB • Spindle speeds of 7200 RPM • Fluid Dynamic Bearing motor • Enhanced IDE interface ...; Quiet Seek mode (AAM) • 48-bit addressing feature • ATA-7 compliant • UDMA 133 support • Streaming feature set support • World Wide Name Deskstar T7K250 Hard Disk Drive specification 5
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Deskstar T7K250 Hard Disk Drive Specification 6
Deskstar T7K250 Hard Disk Drive Specification 6
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Deskstar T7K250 Hard Disk Drive Specification 8
Deskstar T7K250 Hard Disk Drive Specification 8
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...control electronics performs the following major functions: • Controls and interprets all interface signals between the host controller and the drive. • Controls read /write heads centered over the desired track. Venting of the actuator. The actuator is operational..., brushless, sensorless DC drive motor. The actuator assembly is assembled in a desired position. • Constantly monitors error conditions of the disk where it parks. Deskstar T7K250 Hard Disk Drive Specification 9 3.0 Fixed-disk subsystem description 3.1 Control electronics The drive is used to allow...
...control electronics performs the following major functions: • Controls and interprets all interface signals between the host controller and the drive. • Controls read /write heads centered over the desired track. Venting of the actuator. The actuator is operational..., brushless, sensorless DC drive motor. The actuator assembly is assembled in a desired position. • Constantly monitors error conditions of the disk where it parks. Deskstar T7K250 Hard Disk Drive Specification 9 3.0 Fixed-disk subsystem description 3.1 Control electronics The drive is used to allow...
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Deskstar T7K250 Hard Disk Drive Specification 10
Deskstar T7K250 Hard Disk Drive Specification 10
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...,059,350,016 200,049,647,616 Notes: 1. max (Gbits/in2 ) Number of heads) which is used to 63 712.4 114 81.21 30 Deskstar T7K250 Hard Disk Drive Specification 11 The logical layout to 16, 383 per track 63 63 63 Number of Cylinders2 16,383 16,383 16, 383 Number of buffer... segments (write) Recording density - Logical layout: Logical layout is an imaginary drive parameter (that is, the actual Head and Sectors ) translation is , the number of data bands up to 128 up to 63 767.7 120 92.1 30...
...,059,350,016 200,049,647,616 Notes: 1. max (Gbits/in2 ) Number of heads) which is used to 63 712.4 114 81.21 30 Deskstar T7K250 Hard Disk Drive Specification 11 The logical layout to 16, 383 per track 63 63 63 Number of Cylinders2 16,383 16,383 16, 383 Number of buffer... segments (write) Recording density - Logical layout: Logical layout is an imaginary drive parameter (that is, the actual Head and Sectors ) translation is , the number of data bands up to 128 up to 63 767.7 120 92.1 30...
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4.3 World Wide Name Assignment Description Organization Manufacturing Site Product OUI SHBU Block Assignment -Thailand -China Port/Node ID 200 GB, 250 GB 160 GB Hitachi GST Sriracha Plant Thailand\ Hitachi Global Storage Products (Shenzen)Co.Ltd., China Deskstar T7K250 000CCAh 20Bh 307h 205h 306h 11b Deskstar T7K250 Hard Disk Drive Specification 12
4.3 World Wide Name Assignment Description Organization Manufacturing Site Product OUI SHBU Block Assignment -Thailand -China Port/Node ID 200 GB, 250 GB 160 GB Hitachi GST Sriracha Plant Thailand\ Hitachi Global Storage Products (Shenzen)Co.Ltd., China Deskstar T7K250 000CCAh 20Bh 307h 205h 306h 11b Deskstar T7K250 Hard Disk Drive Specification 12
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4.4 Drive organization 4.4.1 Drive format Upon shipment from manufacturing the drive satisfies the sector continuity in the physical format by means of the defect flagging strategy described in Section 5.0, "Defect flagging strategy" on page 21 in order to provide the maximum performance to users. 4.4.2 Cylinder allocation Table 2: Cylinder allocation Deskstar T7K250 Hard Disk Drive Specification 13
4.4 Drive organization 4.4.1 Drive format Upon shipment from manufacturing the drive satisfies the sector continuity in the physical format by means of the defect flagging strategy described in Section 5.0, "Defect flagging strategy" on page 21 in order to provide the maximum performance to users. 4.4.2 Cylinder allocation Table 2: Cylinder allocation Deskstar T7K250 Hard Disk Drive Specification 13
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It is used by Hitachi Global Storage Technologies manufacturing and includes data sent from the starting data track of the inner zone cylinders are not allocated. Depending on the capacity some of 0. Physical cylinder is calculated from a defect location. Data cylinder This cylinder contains the user data which can be sent and retrieved via read/write commands and a spare area for reassigned data. Deskstar T7K250 Hard Disk Drive Specification 14 Spare cylinder The spare cylinder is not relevant to logical CHS.
It is used by Hitachi Global Storage Technologies manufacturing and includes data sent from the starting data track of the inner zone cylinders are not allocated. Depending on the capacity some of 0. Physical cylinder is calculated from a defect location. Data cylinder This cylinder contains the user data which can be sent and retrieved via read/write commands and a spare area for reassigned data. Deskstar T7K250 Hard Disk Drive Specification 14 Spare cylinder The spare cylinder is not relevant to logical CHS.
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...3: Command overhead Command type (Drive is in the buffer excluding Physical seek time and Latency. 4.5 Performance characteristics Drive performance is characterized by a ...host to the assertion of DRQ for queued command (ms) 0.3 0.2 0.2 not applicable 4.5.2 Mechanical positioning 4.5.2.1 Average seek time (including settling) Table 4: Mechanical positioning performance Command type Typical (ms) Max (ms) Read Write Read (Quiet Seek mode) Write (Quiet Seek mode) 8.2 9.2 9.2 10.2 19.5 20.5 20.5 21.5 Deskstar T7K250 Hard Disk Drive...
...3: Command overhead Command type (Drive is in the buffer excluding Physical seek time and Latency. 4.5 Performance characteristics Drive performance is characterized by a ...host to the assertion of DRQ for queued command (ms) 0.3 0.2 0.2 not applicable 4.5.2 Mechanical positioning 4.5.2.1 Average seek time (including settling) Table 4: Mechanical positioning performance Command type Typical (ms) Max (ms) Read Write Read (Quiet Seek mode) Write (Quiet Seek mode) 8.2 9.2 9.2 10.2 19.5 20.5 20.5 21.5 Deskstar T7K250 Hard Disk Drive...
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Deskstar T7K250 Hard Disk Drive Specification 16 ments" on page 29 for an n track seek 4.5.2.2 Full stroke seek time (without command overhead, including settling) Table 5: Full stroke seek time Function ... and are defined as the weighted average of the next sequential track after reading the last sector in 4.5.5, "Throughput" on any one drive over the full range of the drive population tested at nominal environmental and voltage conditions. max Σ (m10 n)(Tnin + Tnout) n=1 Weighted Average (max + 1)(max) where max n Tnin Tnout = Maximum...
Deskstar T7K250 Hard Disk Drive Specification 16 ments" on page 29 for an n track seek 4.5.2.2 Full stroke seek time (without command overhead, including settling) Table 5: Full stroke seek time Function ... and are defined as the weighted average of the next sequential track after reading the last sector in 4.5.5, "Throughput" on any one drive over the full range of the drive population tested at nominal environmental and voltage conditions. max Σ (m10 n)(Tnin + Tnout) n=1 Weighted Average (max + 1)(max) where max n Tnin Tnout = Maximum...
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read, write) immediately. Deskstar T7K250 Hard Disk Drive Specification 17 This includes the time required for example- The measuring method is given in Section 4.5.5, "Throughput" on page 19. 4.5.2.5 Single track seek time (without... (inward and outward). 4.5.2.6 Average latency Table 8: Latency Time Rotational speed (RPM) 7200 RPM Time for one revolution (ms) 8.3 Average latency (ms) 4.17 4.5.3 Drive ready time Table 9: Drive ready time Power on to ready 250 GB models Typical (sec) 8 Maximum (sec) 20 Ready Power on The condition in the current cylinder. 4.5.2.4 Cylinder...
read, write) immediately. Deskstar T7K250 Hard Disk Drive Specification 17 This includes the time required for example- The measuring method is given in Section 4.5.5, "Throughput" on page 19. 4.5.2.5 Single track seek time (without... (inward and outward). 4.5.2.6 Average latency Table 8: Latency Time Rotational speed (RPM) 7200 RPM Time for one revolution (ms) 8.3 Average latency (ms) 4.17 4.5.3 Drive ready time Table 9: Drive ready time Power on to ready 250 GB models Typical (sec) 8 Maximum (sec) 20 Ready Power on The condition in the current cylinder. 4.5.2.4 Cylinder...
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... speed Disk-Buffer transfer (Zone 0) Instantaneous - typical Sustained - read typical Disk-Buffer transfer (Zone 29) Instantaneous - It is given in 4.5.5, "Throughput" on page 19. Deskstar T7K250 Hard Disk Drive Specification 18 It also depends on the AT Bus. host (max) Mbytes/sec 79.6 67.8 38.7 32.9 133 • Instantaneous disk-buffer transfer rate (Mbyte...
... speed Disk-Buffer transfer (Zone 0) Instantaneous - typical Sustained - read typical Disk-Buffer transfer (Zone 29) Instantaneous - It is given in 4.5.5, "Throughput" on page 19. Deskstar T7K250 Hard Disk Drive Specification 18 It also depends on the AT Bus. host (max) Mbytes/sec 79.6 67.8 38.7 32.9 133 • Instantaneous disk-buffer transfer rate (Mbyte...
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...(A + B + C+ 512/D + 512/E) (READ) where T = Calculated time (sec) A = Command process time (Command overhead) (sec) B = Average seek time (sec) C = Latency D = Average sustained disk-buffer transfer rate (byte/s) Deskstar T7K250 Hard Disk Drive Specification 19 4.5.5 Throughput 4.5.5.1 Simple sequential access The following table illustrates simple sequential access for the three-disk enclosure.
...(A + B + C+ 512/D + 512/E) (READ) where T = Calculated time (sec) A = Command process time (Command overhead) (sec) B = Average seek time (sec) C = Latency D = Average sustained disk-buffer transfer rate (byte/s) Deskstar T7K250 Hard Disk Drive Specification 19 4.5.5 Throughput 4.5.5.1 Simple sequential access The following table illustrates simple sequential access for the three-disk enclosure.
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.... Note: Upon power down or spindle stop or power down time reflecting the seconds passed until the spindle motor stops. Deskstar T7K250 Hard Disk Drive Specification 20 Spindle motor and servo system are working normally. TActuator is unloaded and spindle motor is stopped. Only soft reset or... hard reset can be received immediately. Commands can be an actual spin down . Commands can change the mode to standby. Seek ...
.... Note: Upon power down or spindle stop or power down time reflecting the seconds passed until the spindle motor stops. Deskstar T7K250 Hard Disk Drive Specification 20 Spindle motor and servo system are working normally. TActuator is unloaded and spindle motor is stopped. Only soft reset or... hard reset can be received immediately. Commands can be an actual spin down . Commands can change the mode to standby. Seek ...
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... is wasted as a spare throughout user data areas. • All pushes generated by defects are skipped without any constraint, such as track or cylinder boundary. Deskstar T7K250 Hard Disk Drive Specification 21 The mapping from LBA to the next available sector during the Format Process in manufacturing.
... is wasted as a spare throughout user data areas. • All pushes generated by defects are skipped without any constraint, such as track or cylinder boundary. Deskstar T7K250 Hard Disk Drive Specification 21 The mapping from LBA to the next available sector during the Format Process in manufacturing.