SAS System Builder Resource Guide: System builders info on the SCSI to SAS transition (258K, PDF)
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... and e-commerce Seagate Barracuda ES.2 SAS Drives Designed for high-capacity enterprise storage applications in enterprise cabinetry Superior data integrity • SAS = Full Read and Write Error Correction and Detection (IOECC/IOEDC) vs. Unbeatable performance - 135% increase over SATA • Full duplex I/O, 7200 RPM • Top performer in sequential read/writes • Improved rotational vibration for fail-over SATA • PowerTrim™ technology reduces power consumption, heat and energy...
... and e-commerce Seagate Barracuda ES.2 SAS Drives Designed for high-capacity enterprise storage applications in enterprise cabinetry Superior data integrity • SAS = Full Read and Write Error Correction and Detection (IOECC/IOEDC) vs. Unbeatable performance - 135% increase over SATA • Full duplex I/O, 7200 RPM • Top performer in sequential read/writes • Improved rotational vibration for fail-over SATA • PowerTrim™ technology reduces power consumption, heat and energy...
Cheetah 15K.5 Product Overview
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...-SEAGATE) Specifications Capacity (GB) 300, 146, 73 Seek Time, Read/Write (average, msec) 3.5/4.0 Transfer Rate, Sustained (Mbytes/sec) Up to hard drive capacity. Printed in demanding enterprise applications, including a nonrecoverable error rate that's been improved by a factor of 10, safeguarding data integrity and reducing risk exposure during RAID rebuilds. One gigabyte, or GB, equals one billion bytes when referring to 125 Reliability Rating at Full 24x7 Operation (AFR) 0.62% Nonrecoverable Read Errors per...
...-SEAGATE) Specifications Capacity (GB) 300, 146, 73 Seek Time, Read/Write (average, msec) 3.5/4.0 Transfer Rate, Sustained (Mbytes/sec) Up to hard drive capacity. Printed in demanding enterprise applications, including a nonrecoverable error rate that's been improved by a factor of 10, safeguarding data integrity and reducing risk exposure during RAID rebuilds. One gigabyte, or GB, equals one billion bytes when referring to 125 Reliability Rating at Full 24x7 Operation (AFR) 0.62% Nonrecoverable Read Errors per...
Cheetah 15K.5 Data Sheet
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... errors to be corrected before data is designed and manufactured by verifying-during drive idle time-that successfully delivered the past four award-winning generations. Specifications 300 GB1 146.8 GB1 73.4 GB1 Model Number Capacity Formatted 512 Kbytes/Sector (GB) External Transfer Rate (MB/s) Ultra320 SCSI 4-Gb/s Fibre Channel 3-Gb/s Serial Attached SCSI Performance Spindle Speed (RPM) Average Latency (ms) Seek Time Average Read/Write (ms) Track-to focus on reliability and data protection. Seagate Service Centers-Worldwide Support • Presales and technical support...
... errors to be corrected before data is designed and manufactured by verifying-during drive idle time-that successfully delivered the past four award-winning generations. Specifications 300 GB1 146.8 GB1 73.4 GB1 Model Number Capacity Formatted 512 Kbytes/Sector (GB) External Transfer Rate (MB/s) Ultra320 SCSI 4-Gb/s Fibre Channel 3-Gb/s Serial Attached SCSI Performance Spindle Speed (RPM) Average Latency (ms) Seek Time Average Read/Write (ms) Track-to focus on reliability and data protection. Seagate Service Centers-Worldwide Support • Presales and technical support...
Economies of Capacity and Speed: Choosing the most cost-effective disc drive (263K) (PDF)
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... lab tests the data was accessed randomly, clearly highlighting the benefit of ownership (TCO). For example, an IT manager may grow: Purchasing 15K-RPM drives up with fewer 15K-RPM disc drives. Nevertheless, for that still fall short in terms of speed and throughput. 15K-RPM disc drives were specifically designed to address the performance deficiencies of 10K drives, and in doing enable greater...
... lab tests the data was accessed randomly, clearly highlighting the benefit of ownership (TCO). For example, an IT manager may grow: Purchasing 15K-RPM drives up with fewer 15K-RPM disc drives. Nevertheless, for that still fall short in terms of speed and throughput. 15K-RPM disc drives were specifically designed to address the performance deficiencies of 10K drives, and in doing enable greater...
Optimizing Storage with SAS: Beyond the 10K Compromise (72K, PDF)
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... readily accessible at the cost of random reads/writes and 24x7, always-on operation. they might deploy lower-capacity drives to shorten the distance an actuator must move , decreasing seek time. Nearline-ready SATA drives also incorporate Workload Management to data. Requiring fewer drives to provide equal or better performance, 15K drives deliver lower TCO by parallel SCSI's shared-bus topology. Or they also utilize smaller...
... readily accessible at the cost of random reads/writes and 24x7, always-on operation. they might deploy lower-capacity drives to shorten the distance an actuator must move , decreasing seek time. Nearline-ready SATA drives also incorporate Workload Management to data. Requiring fewer drives to provide equal or better performance, 15K drives deliver lower TCO by parallel SCSI's shared-bus topology. Or they also utilize smaller...
Cheetah 15K.5 SCSI Product Manual
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... to eliminate the possibility of Seagate SCSI drives. Table 1: Drive model number vs. 3.0 General description Cheetah 15K.5 SCSI drives combine Tunneling Magnetoresistive (TMR) heads and a wide Ultra320 SCSI interface to provide high performance, high capacity data storage for details and definitions. Ultra320 SCSI uses negotiated transfer rates. This drive also operates at the factory. The drive records and recovers data on approximately 70 mm non-removable discs. The drive automatically goes to maintain a contamination-free HDA environment.
... to eliminate the possibility of Seagate SCSI drives. Table 1: Drive model number vs. 3.0 General description Cheetah 15K.5 SCSI drives combine Tunneling Magnetoresistive (TMR) heads and a wide Ultra320 SCSI interface to provide high performance, high capacity data storage for details and definitions. Ultra320 SCSI uses negotiated transfer rates. This drive also operates at the factory. The drive records and recovers data on approximately 70 mm non-removable discs. The drive automatically goes to maintain a contamination-free HDA environment.
Cheetah 15K.5 SCSI Product Manual
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... to 64 commands • Background processing of queue • Supports start and stop commands (spindle stops spinning) 3.4 Reliability • Annualized Failure Rate (AFR) of backward and forward compatibility takes precedence. 3.3 Performance • Supports industry standard Ultra320 SCSI interface • Programmable multi-segmentable cache buffer (see Section 4.5) • 15k RPM spindle. Seagate drives also may modify the data block size before issuing a format command and obtain different formatted capacities than those...
... to 64 commands • Background processing of queue • Supports start and stop commands (spindle stops spinning) 3.4 Reliability • Annualized Failure Rate (AFR) of backward and forward compatibility takes precedence. 3.3 Performance • Supports industry standard Ultra320 SCSI interface • Programmable multi-segmentable cache buffer (see Section 4.5) • 15k RPM spindle. Seagate drives also may modify the data block size before issuing a format command and obtain different formatted capacities than those...
Cheetah 15K.5 SCSI Product Manual
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... the workload. The drive does not use Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - If the STRICT bit in the cache from the buffer to the medium is an integer number of a Synchronize Cache command, all cached write data to be made available for read or write command. DRA bit). Sending a size specification using the Mode Select command (bytes 14 and 15) does not set up a new segment size. If there are...
... the workload. The drive does not use Mode Select page 08h, byte 12, bit 5 (Disable Read Ahead - If the STRICT bit in the cache from the buffer to the medium is an integer number of a Synchronize Cache command, all cached write data to be made available for read or write command. DRA bit). Sending a size specification using the Mode Select command (bytes 14 and 15) does not set up a new segment size. If there are...
Cheetah 15K.5 SCSI Product Manual
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... automatic retries and data correction with ECC enabled and all interface timings, power supply voltages, environmental requirements and drive mounting constraints (see Section 6.2). • Errors caused by the drive, and do not require user intervention. Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a write. 5.1.2 Unrecoverable Error Unrecoverable Data Errors (Sense Key = 03h) are applied. Seek Errors Read Error Rates [1] Recovered Data Unrecovered Data Miscorrected Data Annualized Failure Rate (AFR) Preventive...
... automatic retries and data correction with ECC enabled and all interface timings, power supply voltages, environmental requirements and drive mounting constraints (see Section 6.2). • Errors caused by the drive, and do not require user intervention. Recovered Data error rate is determined using read bits transferred for recoverable errors occurring during a write. 5.1.2 Unrecoverable Error Unrecoverable Data Errors (Sense Key = 03h) are applied. Seek Errors Read Error Rates [1] Recovered Data Unrecovered Data Miscorrected Data Annualized Failure Rate (AFR) Preventive...
Cheetah 15K.5 SCSI Product Manual
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... of SCSI devices on the device being changed Seagate Cheetah 15K.5 SCSI disc drives support all devices on the same SCSI bus since the common mode voltages in the HVD environment may not be external to safe levels for SE and LVD devices (see SFF-8451 Specification for SCA-2 Unshielded Connections). End users should be made by the state of the systems integrator to completely removing the drive from temperature, energy, voltage...
... of SCSI devices on the device being changed Seagate Cheetah 15K.5 SCSI disc drives support all devices on the same SCSI bus since the common mode voltages in the HVD environment may not be external to safe levels for SE and LVD devices (see SFF-8451 Specification for SCA-2 Unshielded Connections). End users should be made by the state of the systems integrator to completely removing the drive from temperature, energy, voltage...
Cheetah 15K.5 SCSI Product Manual
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... code is referred to Seagate for each attribute. There are two test coverage options implemented in the temperature log page (see Table 2) can set this field, the temperature is signaled. 5.2.5 Thermal monitor Cheetah 15K.5 SCSI drives implement a temperature warning system which is the extended test that performs various tests on the drive and scans every logical block address (LBA) of the parameter field. zero) whenever the error rate...
... code is referred to Seagate for each attribute. There are two test coverage options implemented in the temperature log page (see Table 2) can set this field, the temperature is signaled. 5.2.5 Thermal monitor Cheetah 15K.5 SCSI drives implement a temperature warning system which is the extended test that performs various tests on the drive and scans every logical block address (LBA) of the parameter field. zero) whenever the error rate...
Cheetah 15K.5 SCSI Product Manual
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... seek tests and on the date of shipment to customer and continuing for the new parameter block. Short test (Function Code: 001b) The purpose of the short test is to provide a time-limited test that tests as much of five years, Seagate warrants that each product (including components and subassemblies) or spare part that reports the results of the log page. A complete read operations. The read operation tests the read...
... seek tests and on the date of shipment to customer and continuing for the new parameter block. Short test (Function Code: 001b) The purpose of the short test is to provide a time-limited test that tests as much of five years, Seagate warrants that each product (including components and subassemblies) or spare part that reports the results of the log page. A complete read operations. The read operation tests the read...
Cheetah 15K.5 SCSI Product Manual
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... against the Recovery Time Limit. The use the drive's default value of 0 will result in the drive not performing error recovery. H Time needed to 00 01. 38 Cheetah 15K.5 SCSI Product Manual, Rev. If the Recovery Time Limit or retry count is allowed to take up to 200 msec for retries or ECC correction) that command. Table 6: Read and write retry count maximum recovery times [1] Read retry count [1] 0 1 2 3 4 5 6 7 8 9 10 11 (default) Maximum recovery time per LBA (cumulative...
... against the Recovery Time Limit. The use the drive's default value of 0 will result in the drive not performing error recovery. H Time needed to 00 01. 38 Cheetah 15K.5 SCSI Product Manual, Rev. If the Recovery Time Limit or retry count is allowed to take up to 200 msec for retries or ECC correction) that command. Table 6: Read and write retry count maximum recovery times [1] Read retry count [1] 0 1 2 3 4 5 6 7 8 9 10 11 (default) Maximum recovery time per LBA (cumulative...
Cheetah 15K.5 SCSI Product Manual
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... types is Molex 52747-0211 (Seagate part number 77679052). 8.0 Installation Note. Do not install these drives on single-ended (SE) or low voltage differential (LVD) busses. The first thing to do not cover with any additionally purchased drive installation software. Drive default mode parameters are on J6 is shipped with 512 byte sectors. 8.1 Drive ID/option select header Figure 10 shows the drive ID select jumper connector. The user, system integra- If jumpers are changed...
... types is Molex 52747-0211 (Seagate part number 77679052). 8.0 Installation Note. Do not install these drives on single-ended (SE) or low voltage differential (LVD) busses. The first thing to do not cover with any additionally purchased drive installation software. Drive default mode parameters are on J6 is shipped with 512 byte sectors. 8.1 Drive ID/option select header Figure 10 shows the drive ID select jumper connector. The user, system integra- If jumpers are changed...
Cheetah 15K.5 SCSI Product Manual
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... factory default condition. OFF or ON underlined is installed; The J5 connector signals conform to J5 pin 8 (see Figure 10) and the drive's +5V power source, through an appropriately sized current limiting resistor. The PCBA on J5 and J6 jumper header connectors are given here and in Section 8.1.2. Drive Front Jumper Plug (enlarged to SCSI Bus Parity Disable Delay Motor Start Enable Remote Motor Start Write...
... factory default condition. OFF or ON underlined is installed; The J5 connector signals conform to J5 pin 8 (see Figure 10) and the drive's +5V power source, through an appropriately sized current limiting resistor. The PCBA on J5 and J6 jumper header connectors are given here and in Section 8.1.2. Drive Front Jumper Plug (enlarged to SCSI Bus Parity Disable Delay Motor Start Enable Remote Motor Start Write...
Cheetah 15K.5 SCSI Product Manual
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... achieve satisfactory system operation. For LC model drives, installations with the various Cheetah 15K.5 SCSI I/O connectors are not recommended. 9.6.4 Mating connectors Part numbers for use on cables are given in Section 6 of loads and spacing, transfer rates, and cost to maintain adequate margin at FAST-20, FAST40, FAST-80, and FAST-160 SCSI transfer rates. Implementations may require trade-offs in this manual. LC Models The 80-pin connector option provided...
... achieve satisfactory system operation. For LC model drives, installations with the various Cheetah 15K.5 SCSI I/O connectors are not recommended. 9.6.4 Mating connectors Part numbers for use on cables are given in Section 6 of loads and spacing, transfer rates, and cost to maintain adequate margin at FAST-20, FAST40, FAST-80, and FAST-160 SCSI transfer rates. Implementations may require trade-offs in this manual. LC Models The 80-pin connector option provided...
Cheetah 15K.5 SCSI Product Manual
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This type connector can only be used on cable ends or in cable middle section for daisy-chain installations [1]. No possibility for the equipment user to attach an 80-pin cable/connector should be allowed, since the power-carrying conductors on the 80-conductor interface were not intended to support a series of drives. Use either on cable ends. [1] Amp Model 88-5870-294-5 W/O Strain Relief (25 mil conductor centers...
This type connector can only be used on cable ends or in cable middle section for daisy-chain installations [1]. No possibility for the equipment user to attach an 80-pin cable/connector should be allowed, since the power-carrying conductors on the 80-conductor interface were not intended to support a series of drives. Use either on cable ends. [1] Amp Model 88-5870-294-5 W/O Strain Relief (25 mil conductor centers...
Cheetah 15K.5 SCSI Product Manual
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... devices which the installation and interface cabling is either singleended or low voltage differential drivers/receivers (selectable using 0.025-inch (0.635 mm) centerline flat ribbon cable. Drives must be provided for singleended and low voltage differential devices (see ANSI SPI-4 specification T10/1365D). This multimode design does not allow dynamically changing transmission modes. H indicates drive activity for host front panel hard drive activity indicator. [5] Asserted by host to enable...
... devices which the installation and interface cabling is either singleended or low voltage differential drivers/receivers (selectable using 0.025-inch (0.635 mm) centerline flat ribbon cable. Drives must be provided for singleended and low voltage differential devices (see ANSI SPI-4 specification T10/1365D). This multimode design does not allow dynamically changing transmission modes. H indicates drive activity for host front panel hard drive activity indicator. [5] Asserted by host to enable...
Cheetah 15K.5 SCSI Product Manual
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... drive products should contact their place of defective products. H Have your customer support representative for all formats and all brands of telephone numbers to technical support, presales and warranty service in Europe, the Middle East and Africa, go to the "Contact Us" page on www.seagate.com. Data Recovery Services Seagate offers data recovery services for the location nearest you. Contact your serial number and model or part number available. Resellers or end users...
... drive products should contact their place of defective products. H Have your customer support representative for all formats and all brands of telephone numbers to technical support, presales and warranty service in Europe, the Middle East and Africa, go to the "Contact Us" page on www.seagate.com. Data Recovery Services Seagate offers data recovery services for the location nearest you. Contact your serial number and model or part number available. Resellers or end users...
Cheetah 15K.5 SCSI Product Manual
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power supply voltage 15 power-carrying conductor 62 power-on 41, 70 power-on reset 53 power-up 25, 44 prefetch 13 prefetch (read look-ahead) 13 prefetch mode 13 prefetch operation 13 prefetch segmented cache control 13 preventive maintenance 15, 16 product data page 52 programmable drive capacity 10 R radio interference regulations 3 RCD bit 13 read error rate 15 read error rates 37 read retry count 37 read/write head 11 ready 53 receive diagnostic results 39 receiver...
power supply voltage 15 power-carrying conductor 62 power-on 41, 70 power-on reset 53 power-up 25, 44 prefetch 13 prefetch (read look-ahead) 13 prefetch mode 13 prefetch operation 13 prefetch segmented cache control 13 preventive maintenance 15, 16 product data page 52 programmable drive capacity 10 R radio interference regulations 3 RCD bit 13 read error rate 15 read error rates 37 read retry count 37 read/write head 11 ready 53 receive diagnostic results 39 receiver...