Barracuda ES.2 Data Sheet
Page 2
...hard drive capacity. www.seagate.com 1-800-SEAGATE (1-800-732-4283) Specifications 1 TB1 750 GB1 500 GB1 250 GB1 Model Number Interface External Transfer Rate (Gb...Weight (lb/kg) ST31000340NS ST31000640SS ST3750330NS ST3750630SS ST3500320NS ST3500620SS ST3250310NS SATA 3Gb/s,...Barracuda ES.2 drive utilizes perpendicular recording technology to change, without notice, product offerings or specifications. Barracuda® ES.2 High-capacity, business-critical Tier 2 enterprise drives Seagate Makes the Best Even Better With a 5-Year Limited Warranty • 1-TB Seagate Barracuda ES.2 drive...
...hard drive capacity. www.seagate.com 1-800-SEAGATE (1-800-732-4283) Specifications 1 TB1 750 GB1 500 GB1 250 GB1 Model Number Interface External Transfer Rate (Gb...Weight (lb/kg) ST31000340NS ST31000640SS ST3750330NS ST3750630SS ST3500320NS ST3500620SS ST3250310NS SATA 3Gb/s,...Barracuda ES.2 drive utilizes perpendicular recording technology to change, without notice, product offerings or specifications. Barracuda® ES.2 High-capacity, business-critical Tier 2 enterprise drives Seagate Makes the Best Even Better With a 5-Year Limited Warranty • 1-TB Seagate Barracuda ES.2 drive...
Systems Integrator Has to Deliver Fast, Reliable Networks (101K, PDF)
Page 1
... in server and storage systems with multiple drives. Option+ evaluated the Seagate® Barracuda ES drive, a Serial ATA (SATA) hard drive with generous capacities ranging from 250 GB to Deliver Fast, Reliable Networks After testing, Option+ selects the Seagate Barracuda ES drive for almost any customer application." The Barracuda ES drive features capacity from 250 GB to build completely reliable, fast networks. Option...
... in server and storage systems with multiple drives. Option+ evaluated the Seagate® Barracuda ES drive, a Serial ATA (SATA) hard drive with generous capacities ranging from 250 GB to Deliver Fast, Reliable Networks After testing, Option+ selects the Seagate Barracuda ES drive for almost any customer application." The Barracuda ES drive features capacity from 250 GB to build completely reliable, fast networks. Option...
Barracuda ES.2 SATA Product Manual
Page 7
... Worldwide Name (WWN) capability uniquely identifies the drive. 1.0 Introduction This manual describes the functional, mechanical and interface specifications for the following Seagate Barracuda® ES.2 Serial ATA model drives: ST31000340NS ST3750330NS ST3500320NS ST3250310NS These drives provide the following key features: • ... drives with increased areal density. • State-of-the-art cache and on-the-fly error-correction algorithms. • Native Command Queueing with command ordering to increase performance in demanding applications. • Full-track multiple-sector...
... Worldwide Name (WWN) capability uniquely identifies the drive. 1.0 Introduction This manual describes the functional, mechanical and interface specifications for the following Seagate Barracuda® ES.2 Serial ATA model drives: ST31000340NS ST3750330NS ST3500320NS ST3250310NS These drives provide the following key features: • ... drives with increased areal density. • State-of-the-art cache and on-the-fly error-correction algorithms. • Native Command Queueing with command ordering to increase performance in demanding applications. • Full-track multiple-sector...
Barracuda ES.2 SATA Product Manual
Page 10
... summary for 1000 GB (1 Tbyte) and 750 GB models Drive specification Formatted Gbytes (512 bytes/sector)* Guaranteed sectors Heads Discs Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording density, ...nonoperating (below mean sea level, max) Operational Shock (max at 2 msec) Non-Operational Shock (max at 2 msec) ST31000340NS ST3750330NS 1000 750 1,953,525,168 1,465,149,168 8 6 4 3 512 63 16 16,383 1,090 150 164 7,200 1287 105...96 m to 3,048 m (-200 ft. to 40,000+ ft.) 70 Gs 300 Gs 4 Barracuda ES.2 Serial ATA Product Manual, Rev.
... summary for 1000 GB (1 Tbyte) and 750 GB models Drive specification Formatted Gbytes (512 bytes/sector)* Guaranteed sectors Heads Discs Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording density, ...nonoperating (below mean sea level, max) Operational Shock (max at 2 msec) Non-Operational Shock (max at 2 msec) ST31000340NS ST3750330NS 1000 750 1,953,525,168 1,465,149,168 8 6 4 3 512 63 16 16,383 1,090 150 164 7,200 1287 105...96 m to 3,048 m (-200 ft. to 40,000+ ft.) 70 Gs 300 Gs 4 Barracuda ES.2 Serial ATA Product Manual, Rev.
Barracuda ES.2 SATA Product Manual
Page 11
... ST3750330NS 5-22 Hz: 0.25 Gs, Limited displacement 22-350 Hz: 0.50 Gs 350-500 Hz: 0.25 Gs 5-22 Hz: 2.0 Gs, Limited displacement 22-350 Hz: 5.0 Gs 350-500 Hz: 2.0 Gs 3.25 (typical) 3.4 (max) 2.9 (typical) 3.1 (max) 3.2 (typical) 3.3 (max) 3.1 (typical) 3.2 (max) 1 sector ...: www.seagate.com/support/service/ From this page, click on operating environment and formatting. **During periods of purchase. specification, which may occur according to operational levels. You will display the warranty information for a specific drive, use a web browser to hard drive capacity. Barracuda ES.2 ...
... ST3750330NS 5-22 Hz: 0.25 Gs, Limited displacement 22-350 Hz: 0.50 Gs 350-500 Hz: 0.25 Gs 5-22 Hz: 2.0 Gs, Limited displacement 22-350 Hz: 5.0 Gs 350-500 Hz: 2.0 Gs 3.25 (typical) 3.4 (max) 2.9 (typical) 3.1 (max) 3.2 (typical) 3.3 (max) 3.1 (typical) 3.2 (max) 1 sector ...: www.seagate.com/support/service/ From this page, click on operating environment and formatting. **During periods of purchase. specification, which may occur according to operational levels. You will display the warranty information for a specific drive, use a web browser to hard drive capacity. Barracuda ES.2 ...
Barracuda ES.2 SATA Product Manual
Page 12
...,000+ ft.) -60.96 m to 40,000+ ft.) 70 Gs 300 Gs 6 Barracuda ES.2 Serial ATA Product Manual, Rev. Table 2: Drive specifications summary for 500 GB and 250 GB models Drive specification Formatted Gbytes (512 bytes/sector)* Guaranteed sectors Heads Discs Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording density, KBPI (kbits/in...
...,000+ ft.) -60.96 m to 40,000+ ft.) 70 Gs 300 Gs 6 Barracuda ES.2 Serial ATA Product Manual, Rev. Table 2: Drive specifications summary for 500 GB and 250 GB models Drive specification Formatted Gbytes (512 bytes/sector)* Guaranteed sectors Heads Discs Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording density, KBPI (kbits/in...
Barracuda ES.2 SATA Product Manual
Page 13
...hard drive capacity. You will display the warranty information for a specific drive, use a web browser to provide the drive serial number, model number (or part number) and country of drive...) 3.4 (max) 2.7 (typical) 2.9 (max) 3.1 (typical) 3.2 (max) 3.0 (typical) 3.1 (max) 1 sector per 1015 bits read errors Annualized Failure Rate (AFR) Warranty Contact start-stop cycles (25°C, 50% rel. The system... web page: www.seagate.com/support/service/ From this page, click on distribution units. specification, which may occur according to operational levels. Barracuda ES.2 Serial ATA ...
...hard drive capacity. You will display the warranty information for a specific drive, use a web browser to provide the drive serial number, model number (or part number) and country of drive...) 3.4 (max) 2.7 (typical) 2.9 (max) 3.1 (typical) 3.2 (max) 3.0 (typical) 3.1 (max) 1 sector per 1015 bits read errors Annualized Failure Rate (AFR) Warranty Contact start-stop cycles (25°C, 50% rel. The system... web page: www.seagate.com/support/service/ From this page, click on distribution units. specification, which may occur according to operational levels. Barracuda ES.2 Serial ATA ...
Barracuda ES.2 SATA Product Manual
Page 14
...ST3750330NS ST3500320NS ST3250310NS Formatted capacity* 1000 Gbytes 750 Gbytes 500 Gbytes 250 Gbytes Guaranteed sectors 1,953,525,168 1,465,149,168 976,773,168 488,397,168 Bytes per track 63 LBA mode When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to hard drive.../sec max) 1000GB 750GB Serial ATA (SATA) Perpendicular 1,090 150 164 7,200 1287 105 300 (Ultra DMA mode 5) 500GB 250GB 8 Barracuda ES.2 Serial ATA Product Manual, Rev. See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about...
...ST3750330NS ST3500320NS ST3250310NS Formatted capacity* 1000 Gbytes 750 Gbytes 500 Gbytes 250 Gbytes Guaranteed sectors 1,953,525,168 1,465,149,168 976,773,168 488,397,168 Bytes per track 63 LBA mode When addressing these drives in LBA mode, all blocks (sectors) are consecutively numbered from 0 to hard drive.../sec max) 1000GB 750GB Serial ATA (SATA) Perpendicular 1,090 150 164 7,200 1287 105 300 (Ultra DMA mode 5) 500GB 250GB 8 Barracuda ES.2 Serial ATA Product Manual, Rev. See Section 4.3.1, "Identify Device command" (words 60-61 and 100-103) for additional information about...
Barracuda ES.2 SATA Product Manual
Page 16
... power is measured with the drive up to the time that the drive spindle reaches operating speed. • Seek mode During seek mode, the read/write actuator arm moves toward a specific position on a 16-sector write followed by a 32-msec delay, then a 16-sector read followed by a 32-... Spinup power is not spinning, and the servo and read or write latency time. specification, which may occur according to operational levels. 10 Barracuda ES.2 Serial ATA Product Manual, Rev. Servo electronics are in the table on page 9. Table 3: DC power requirements Power dissipation (4-disc ...
... power is measured with the drive up to the time that the drive spindle reaches operating speed. • Seek mode During seek mode, the read/write actuator arm moves toward a specific position on a 16-sector write followed by a 32-msec delay, then a 16-sector read followed by a 32-... Spinup power is not spinning, and the servo and read or write latency time. specification, which may occur according to operational levels. 10 Barracuda ES.2 Serial ATA Product Manual, Rev. Servo electronics are in the table on page 9. Table 3: DC power requirements Power dissipation (4-disc ...
Barracuda ES.2 SATA Product Manual
Page 31
... Supported ATA commands The following table lists Serial ATA standard commands that the drive supports. Table 7: Supported ATA commands Command name Check Power Mode Device Configuration...Multiple Read Multiple Extended Read Native Max Address Read Native Max Address Extended Read Sectors Read Sectors Extended Read Sectors Without Retries Read Verify Sectors Read Verify Sectors Extended Read Verify Sectors Without Retries Recalibrate Security Disable Password Security Erase Prepare Command code (in the...27H 20H 24H 21H 40H 42H 41H 10H F6H F3H Barracuda ES.2 Serial ATA Product Manual, Rev.
... Supported ATA commands The following table lists Serial ATA standard commands that the drive supports. Table 7: Supported ATA commands Command name Check Power Mode Device Configuration...Multiple Read Multiple Extended Read Native Max Address Read Native Max Address Extended Read Sectors Read Sectors Extended Read Sectors Without Retries Read Verify Sectors Read Verify Sectors Extended Read Verify Sectors Without Retries Recalibrate Security Disable Password Security Erase Prepare Command code (in the...27H 20H 24H 21H 40H 42H 41H 10H F6H F3H Barracuda ES.2 Serial ATA Product Manual, Rev.
Barracuda ES.2 SATA Product Manual
Page 32
... DMA Extended Write DMA FUA Extended Write DMA Without Retries Write Log Extended Write Multiple Write Multiple Extended Write Multiple FUA Extended Write Sectors Write Sectors Without Retries Write Sectors Extended Command code (in the Set Max Features register as defined to the right. Read Data S.M.A.R.T. Enable Operations S.M.A.R.T. Save Attribute Values S.M.A.R.T. G Command name...B0H / D0H B0H / D5H B0H / DAH B0H / D3H B0H / D6H E2H E0H E8H CAH 35H CDH CBH 3FH C5H 39H CEH 30H 31H 34H 26 Barracuda ES.2 Serial ATA Product Manual, Rev. Read Attribute Thresholds S.M.A.R.T. Read Log...
... DMA Extended Write DMA FUA Extended Write DMA Without Retries Write Log Extended Write Multiple Write Multiple Extended Write Multiple FUA Extended Write Sectors Write Sectors Without Retries Write Sectors Extended Command code (in the Set Max Features register as defined to the right. Read Data S.M.A.R.T. Enable Operations S.M.A.R.T. Save Attribute Values S.M.A.R.T. G Command name...B0H / D0H B0H / D5H B0H / DAH B0H / D3H B0H / D6H E2H E0H E8H CAH 35H CDH CBH 3FH C5H 39H CEH 30H 31H 34H 26 Barracuda ES.2 Serial ATA Product Manual, Rev. Read Attribute Thresholds S.M.A.R.T. Read Log...
Barracuda ES.2 SATA Product Manual
Page 33
...The following power up. 4.3.1 Identify Device command The Identify Device command (command code ECH) transfers information about the drive to end of string) (Bits 7-0) Maximum sectors per interrupt on Read multiple and Write multiple (16) Reserved Standard Standby timer, IORDY supported and may not be ...padded with the state of sectors transferred during a Read Multiple or Write Multiple command Value 0C5AH 16,383 0000H 16 0000H 0000H 003FH 0000H ASCII 0000H 0400H 0000H x.xx 8010H 0000H 2F00H 0000H 0200H 0200H 0007H xxxxH xxxxH xxxxH xxxxH xxxxH Barracuda ES.2 Serial ATA Product Manual...
...The following power up. 4.3.1 Identify Device command The Identify Device command (command code ECH) transfers information about the drive to end of string) (Bits 7-0) Maximum sectors per interrupt on Read multiple and Write multiple (16) Reserved Standard Standby timer, IORDY supported and may not be ...padded with the state of sectors transferred during a Read Multiple or Write Multiple command Value 0C5AH 16,383 0000H 16 0000H 0000H 003FH 0000H ASCII 0000H 0400H 0000H x.xx 8010H 0000H 2F00H 0000H 0200H 0200H 0007H xxxxH xxxxH xxxxH xxxxH xxxxH Barracuda ES.2 Serial ATA Product Manual...
Barracuda ES.2 SATA Product Manual
Page 34
... 0001H 4000H xx3FH 0000H 0000H FFFEH xxxxH 0000H 1000 GB models = 1,953,525,168 750 GB models = 1,465,149,168 500 GB models = 976,773,168 250 GB models = 488,397,168 0000H 28 Barracuda ES.2 Serial ATA Product Manual, Rev. Drives with IORDY flow control (120 nsec) ATA-reserved Queue... capacities over 137 Gbytes will have 0FFFFFFFh in words 100-103. G Maximum value: 0000FFFFFFFFFFFFh. This is : 0FFFFFFFh (268,435,455 sectors, 137 Gbytes). Retired Multiword DMA active and modes supported (see note following this table) Security erase time Enhanced security erase time Master ...
... 0001H 4000H xx3FH 0000H 0000H FFFEH xxxxH 0000H 1000 GB models = 1,953,525,168 750 GB models = 1,465,149,168 500 GB models = 976,773,168 250 GB models = 488,397,168 0000H 28 Barracuda ES.2 Serial ATA Product Manual, Rev. Drives with IORDY flow control (120 nsec) ATA-reserved Queue... capacities over 137 Gbytes will have 0FFFFFFFh in words 100-103. G Maximum value: 0000FFFFFFFFFFFFh. This is : 0FFFFFFFh (268,435,455 sectors, 137 Gbytes). Retired Multiword DMA active and modes supported (see note following this table) Security erase time Enhanced security erase time Master ...
Barracuda ES.2 SATA Product Manual
Page 37
...of the Features register, clears BSY and generates an interrupt. G 31 Barracuda ES.2 Serial ATA Product Manual, Rev. 4.3.2 Set Features command This command controls the implementation of various features that the drive supports, the command is aborted. The acceptable values for the Features register ...values 02H Enable write cache (default). 03H Set transfer mode (based on value in the register does not represent a feature that the drive supports. Sector Count register values: 00H Set PIO mode to default (PIO mode 2). 01H Set PIO mode to default and disable IORDY (PIO ...
...of the Features register, clears BSY and generates an interrupt. G 31 Barracuda ES.2 Serial ATA Product Manual, Rev. 4.3.2 Set Features command This command controls the implementation of various features that the drive supports, the command is aborted. The acceptable values for the Features register ...values 02H Enable write cache (default). 03H Set transfer mode (based on value in the register does not represent a feature that the drive supports. Sector Count register values: 00H Set PIO mode to default (PIO mode 2). 01H Set PIO mode to default and disable IORDY (PIO ...
Barracuda ES.2 SATA Product Manual
Page 38
... are susceptible to the Error register. 32 Barracuda ES.2 Serial ATA Product Manual, Rev. This drive is likely, S.M.A.R.T. Save Attribute Values S.M.A.R.T. G Read Log Sector S.M.A.R.T. Execute Off-line Immediate (runs DST) S.M.A.R.T. Table 9: S.M.A.R.T. Read Data S.M.A.R.T. 4.3.3 S.M.A.R.T. Not all new drives and is enabled, the drive monitors predetermined drive attributes that eliminates unnecessary drive returns. provides near-term failure prediction for...
... are susceptible to the Error register. 32 Barracuda ES.2 Serial ATA Product Manual, Rev. This drive is likely, S.M.A.R.T. Save Attribute Values S.M.A.R.T. G Read Log Sector S.M.A.R.T. Execute Off-line Immediate (runs DST) S.M.A.R.T. Table 9: S.M.A.R.T. Read Data S.M.A.R.T. 4.3.3 S.M.A.R.T. Not all new drives and is enabled, the drive monitors predetermined drive attributes that eliminates unnecessary drive returns. provides near-term failure prediction for...
Barracuda ES.2 SATA Product Manual
Page 41
... certification 16 Check Power Mode 25 China RoHS directive 18 Class B computing device 17 compatibility 16 Conducted noise 12 Conducted RF immunity 15 Configuring the drive 19 connectors 20 Corrosive environment 18 CSA C22.2 (950) 16 cycles 16 Cylinders 8 D data-transfer rates 1 DC power 10 Default logical geometry 8... 17 features 1 Federal Communications Commission 17 Flush Cache 25 Flush Cache Extended 25 Format Track 25 Formatted capacity 8 G geometry 8 Gs 14 guaranteed sectors 8 H Handling precautions 19 heads 8 height 9 humidity 13 Barracuda ES.2 Serial ATA Product Manual, Rev. G 35
... certification 16 Check Power Mode 25 China RoHS directive 18 Class B computing device 17 compatibility 16 Conducted noise 12 Conducted RF immunity 15 Configuring the drive 19 connectors 20 Corrosive environment 18 CSA C22.2 (950) 16 cycles 16 Cylinders 8 D data-transfer rates 1 DC power 10 Default logical geometry 8... 17 features 1 Federal Communications Commission 17 Flush Cache 25 Flush Cache Extended 25 Format Track 25 Formatted capacity 8 G geometry 8 Gs 14 guaranteed sectors 8 H Handling precautions 19 heads 8 height 9 humidity 13 Barracuda ES.2 Serial ATA Product Manual, Rev. G 35
Barracuda ES.2 SATA Product Manual
Page 42
... 9 logical geometry 8 M maintenance 16 master/slave 2 maximum temperature 13 MIC 17 mounting 21 mounting screws 13 mounting the drive 19 N noise 12 nominal power 9 Nonoperating shock 13 Nonoperating vibration 14 Nonrecoverable read errors 16 O operating 10 Operating power ...Sectors 25 Read Verify Sectors Extended 25 Read Verify Sectors Without Retries 25 read/write actuator arm 10 Read/write heads 8 Read/write power 10 Recalibrate 25 recording density 8 recording method 8 Recording technology 8 relative humidity 13 Reliability 16 RF 15 RMS read/write current 12 RoHS 18 RRL 17 36 Barracuda...
... 9 logical geometry 8 M maintenance 16 master/slave 2 maximum temperature 13 MIC 17 mounting 21 mounting screws 13 mounting the drive 19 N noise 12 nominal power 9 Nonoperating shock 13 Nonoperating vibration 14 Nonrecoverable read errors 16 O operating 10 Operating power ...Sectors 25 Read Verify Sectors Extended 25 Read Verify Sectors Without Retries 25 read/write actuator arm 10 Read/write heads 8 Read/write power 10 Recalibrate 25 recording density 8 recording method 8 Recording technology 8 relative humidity 13 Reliability 16 RF 15 RMS read/write current 12 RoHS 18 RRL 17 36 Barracuda...
Barracuda ES.2 SATA Product Manual
Page 43
... Autosave 26 S.M.A.R.T. implementation 25 S.M.A.R.T. Save Attribute Values 26 S.M.A.R.T. Read Log Sector 26 S.M.A.R.T. Write Log sector 26 Safety certification 16 SATA 23 screws 13 sectors 8 Sectors per track 8 Security Disable Password 25 Security Erase Prepare 25 Security Erase Unit... 26 Write Log Extended 26 Write Multiple 26 Write Multiple Extended 26 Write Multiple FUA Extended 26 Write Sectors 26 Write Sectors Extended 26 Write Sectors Without Retries 26 Barracuda ES.2 Serial ATA Product Manual, Rev. Read Data 26 S.M.A.R.T. Return Status 26 S.M.A.R.T. Disable Operations 26...
... Autosave 26 S.M.A.R.T. implementation 25 S.M.A.R.T. Save Attribute Values 26 S.M.A.R.T. Read Log Sector 26 S.M.A.R.T. Write Log sector 26 Safety certification 16 SATA 23 screws 13 sectors 8 Sectors per track 8 Security Disable Password 25 Security Erase Prepare 25 Security Erase Unit... 26 Write Log Extended 26 Write Multiple 26 Write Multiple Extended 26 Write Multiple FUA Extended 26 Write Sectors 26 Write Sectors Extended 26 Write Sectors Without Retries 26 Barracuda ES.2 Serial ATA Product Manual, Rev. Read Data 26 S.M.A.R.T. Return Status 26 S.M.A.R.T. Disable Operations 26...
Barracuda ES.2 SATA Product Manual
Page 7
...Rev. 1.0 Introduction This manual describes the functional, mechanical and interface specifications for the following Seagate Barracuda® ES.2 Serial ATA model drives: ST31000340NS ST3750330NS ST3500320NS ST3250310NS These drives provide the following key features: • 7,200 RPM spindle speed. • High ...the drives with increased areal density. • State-of-the-art cache and on-the-fly error-correction algorithms. • Native Command Queueing with command ordering to increase performance in demanding applications. • Full-track multiple-sector transfer...
...Rev. 1.0 Introduction This manual describes the functional, mechanical and interface specifications for the following Seagate Barracuda® ES.2 Serial ATA model drives: ST31000340NS ST3750330NS ST3500320NS ST3250310NS These drives provide the following key features: • 7,200 RPM spindle speed. • High ...the drives with increased areal density. • State-of-the-art cache and on-the-fly error-correction algorithms. • Native Command Queueing with command ordering to increase performance in demanding applications. • Full-track multiple-sector transfer...
Barracuda ES.2 SATA Product Manual
Page 10
...m to 3,048 m (-200 ft. Table 1: Drive specifications summary for 1000 GB (1 Tbyte) and 750 GB models Drive specification Formatted Gbytes (512 bytes/sector)* Guaranteed sectors Heads Discs Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording ...mean sea level, max) Operational Shock (max at 2 msec) Non-Operational Shock (max at 2 msec) ST31000340NS ST3750330NS 1000 750 1,953,525,168 1,465,149,168 8 6 4 3 512 63 16 16,383 1,090 150 164 7,200...200 ft. H to 40,000+ ft.) 70 Gs 300 Gs 4 Barracuda ES.2 Serial ATA Product Manual, Rev.
...m to 3,048 m (-200 ft. Table 1: Drive specifications summary for 1000 GB (1 Tbyte) and 750 GB models Drive specification Formatted Gbytes (512 bytes/sector)* Guaranteed sectors Heads Discs Bytes per sector Default sectors per track Default read/write heads Default cylinders Recording ...mean sea level, max) Operational Shock (max at 2 msec) Non-Operational Shock (max at 2 msec) ST31000340NS ST3750330NS 1000 750 1,953,525,168 1,465,149,168 8 6 4 3 512 63 16 16,383 1,090 150 164 7,200...200 ft. H to 40,000+ ft.) 70 Gs 300 Gs 4 Barracuda ES.2 Serial ATA Product Manual, Rev.