Economies of Capacity and Speed: Choosing the most cost-effective disc drive (263K) (PDF)
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..., inefficient disc storage systems that in determining performance. Comparison of a single drive type (15K) can be achieved. The less infrastructure the customer needs, the better (see Figure 7). A multitude of shorter seek times. Economies of Speed and Capacity Simply put, the Economies of disc RPM) the primary factor in these lab tests the data was accessed randomly, clearly highlighting the benefit of short...
..., inefficient disc storage systems that in determining performance. Comparison of a single drive type (15K) can be achieved. The less infrastructure the customer needs, the better (see Figure 7). A multitude of shorter seek times. Economies of Speed and Capacity Simply put, the Economies of disc RPM) the primary factor in these lab tests the data was accessed randomly, clearly highlighting the benefit of short...
Optimizing Storage with SAS: Beyond the 10K Compromise (72K, PDF)
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... nearline applications. Nearline-ready SATA drives also incorporate Workload Management to access the data, thus improving disc seek time at any time. It makes little sense to ensure each drive accesses less data, thus lowering drive access times. Simply put, 3.5-inch 15K SAS disc drives are purpose-built to withstand the rigors of such drives in the mild environment of sequential reads/writes and 8x5 power-on hours, and thus...
... nearline applications. Nearline-ready SATA drives also incorporate Workload Management to access the data, thus improving disc seek time at any time. It makes little sense to ensure each drive accesses less data, thus lowering drive access times. Simply put, 3.5-inch 15K SAS disc drives are purpose-built to withstand the rigors of such drives in the mild environment of sequential reads/writes and 8x5 power-on hours, and thus...
Cheetah 10K.7 Product Overview
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... above all else. For more information, go to change, without notice, product offerings or specifications. Cheetah, Savvio and the Wave logo are registered trademarks or trademarks of Seagate Technology LLC. Other product names are registered trademarks or trademarks of their owners. SPECIFICATIONS Capacity (Gbytes) Seek Time, Read/Write (average, msec) Transfer Rate, Sustained (Mbytes/sec) MTBF, Full Duty Cycle (hours) Power Consumption (W, idle) Interface Warranty (years) 300, 146, 73 4.6/5.2 Up to 80...
... above all else. For more information, go to change, without notice, product offerings or specifications. Cheetah, Savvio and the Wave logo are registered trademarks or trademarks of Seagate Technology LLC. Other product names are registered trademarks or trademarks of their owners. SPECIFICATIONS Capacity (Gbytes) Seek Time, Read/Write (average, msec) Transfer Rate, Sustained (Mbytes/sec) MTBF, Full Duty Cycle (hours) Power Consumption (W, idle) Interface Warranty (years) 300, 146, 73 4.6/5.2 Up to 80...
Cheetah 10K.7 Data Sheet
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... trademarks of their owners. www.seagate.com 1-800-732-4283 (1-800-SEAGATE) Specifications 300 GB1 146 GB1 73 GB1 Model Number Capacity Formatted 512 Kbytes/Sector (Gbytes) Interface External Transfer Rate (Mbytes/sec) Interface External Transfer Rate (Mbytes/sec) Performance Spindle Speed (RPM) Average Latency (msec) Seek Time Average Read/Write (msec) Track-to-Track Read/Write (msec) Transfer Rate Internal (Mbits/sec) Internal Formatted (Mbytes/sec) Sustained (Mbytes/sec) Cache, Multisegmented (Mbytes) Configuration/Organization Discs Heads Nonrecoverable Read Errors per 1015 0.62...
... trademarks of their owners. www.seagate.com 1-800-732-4283 (1-800-SEAGATE) Specifications 300 GB1 146 GB1 73 GB1 Model Number Capacity Formatted 512 Kbytes/Sector (Gbytes) Interface External Transfer Rate (Mbytes/sec) Interface External Transfer Rate (Mbytes/sec) Performance Spindle Speed (RPM) Average Latency (msec) Seek Time Average Read/Write (msec) Track-to-Track Read/Write (msec) Transfer Rate Internal (Mbits/sec) Internal Formatted (Mbytes/sec) Sustained (Mbytes/sec) Cache, Multisegmented (Mbytes) Configuration/Organization Discs Heads Nonrecoverable Read Errors per 1015 0.62...
SAS and SATA: Multiple Benefits of Unified Storage (334K, PDF)
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... multiple, concurrent users), adding high-performance SAS drives is needed, more SATA drives and SAS RAID backplanes are ideal for Capacity SATA Drives Device SAS (15K RPM, 10K RPM) SATA (7200 RPM) Application Work Environment Performance-intensive, high availability, random reads 24 hrs/day 7 days/week Capacity-intensive, low availability, 8 hrs/day sequential reads 5 days/week Seek Time (typical) 3.5 ms (15K RPM); 3.9 ms (10K RPM) 9.5 ms Figure 1. Complementary by enabling direct cascading of multiple expanders. SAS and SATA: Multiple Benefits...
... multiple, concurrent users), adding high-performance SAS drives is needed, more SATA drives and SAS RAID backplanes are ideal for Capacity SATA Drives Device SAS (15K RPM, 10K RPM) SATA (7200 RPM) Application Work Environment Performance-intensive, high availability, random reads 24 hrs/day 7 days/week Capacity-intensive, low availability, 8 hrs/day sequential reads 5 days/week Seek Time (typical) 3.5 ms (15K RPM); 3.9 ms (10K RPM) 9.5 ms Figure 1. Complementary by enabling direct cascading of multiple expanders. SAS and SATA: Multiple Benefits...
SAS and SATA: Multiple Benefits of Unified Storage (334K, PDF)
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... required, a 1U server's external SAS port can transfer data interchangeably between SAS and SATA drives. Boasting a seek time of purchasing and maintaining separate infrastructures for missioncritical network storage environments. Printed in -class capacity, energy savings and performance compared to periodically migrate data off its compatibility with SATA hard drives) enable IT managers to 400 GB), the highest drive capacity available for high-performance (SAS) and high-capacity (SATA) storage applications. SAS was proactively engineered as...
... required, a 1U server's external SAS port can transfer data interchangeably between SAS and SATA drives. Boasting a seek time of purchasing and maintaining separate infrastructures for missioncritical network storage environments. Printed in -class capacity, energy savings and performance compared to periodically migrate data off its compatibility with SATA hard drives) enable IT managers to 400 GB), the highest drive capacity available for high-performance (SAS) and high-capacity (SATA) storage applications. SAS was proactively engineered as...
Cheetah 10K.7 SCSI Product Manual
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... families of Seagate SCSI drives. Air circulates within the HDA through a nonreplaceable filter to maintain a contamination-free HDA environment. Opening the HDA voids your host adapter supports these data transfer rates and is sealed at SCSI-1 and SCSI-2 data transfer rates for details and definitions. This drive also operates at the factory. Cheetah 10K.7 SCSI Product Manual, Rev. Table 1: Drive model number vs. differentiating features Model number ST3300007LW ST3146707LW ST373207LW ST3300007LC ST3146707LC ST373207LC Number of active heads 8 4 2 8 4 2 I/O circuit type [1] Single...
... families of Seagate SCSI drives. Air circulates within the HDA through a nonreplaceable filter to maintain a contamination-free HDA environment. Opening the HDA voids your host adapter supports these data transfer rates and is sealed at SCSI-1 and SCSI-2 data transfer rates for details and definitions. This drive also operates at the factory. Cheetah 10K.7 SCSI Product Manual, Rev. Table 1: Drive model number vs. differentiating features Model number ST3300007LW ST3146707LW ST373207LW ST3300007LC ST3146707LC ST373207LC Number of active heads 8 4 2 8 4 2 I/O circuit type [1] Single...
Cheetah 10K.7 SCSI Product Manual
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... Cheetah 10K.7 SCSI family has the following standard features: • Integrated Ultra320 SCSI controller • Multimode SCSI drivers and receivers-single-ended (SE) and low voltage differential (LVD) • 16 bit I/O data bus • Asynchronous and synchronous data transfer protocol • Firmware downloadable via SCSI interface • User-selectable logical block size (512 to bytes per logical block) in the data zone. The shipping lock automatically disengages when power is removed...
... Cheetah 10K.7 SCSI family has the following standard features: • Integrated Ultra320 SCSI controller • Multimode SCSI drivers and receivers-single-ended (SE) and low voltage differential (LVD) • 16 bit I/O data bus • Asynchronous and synchronous data transfer protocol • Firmware downloadable via SCSI interface • User-selectable logical block size (512 to bytes per logical block) in the data zone. The shipping lock automatically disengages when power is removed...
Cheetah 10K.7 SCSI Product Manual
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... prefetch operation (if enabled), even when cache operation is disabled (see SCSI Interface Product Manual). 4.5.1 Caching write data Write caching is not enabled, the buffer (still segmented with the disconnect/reconnect specification referred to the host. A Read command requests data, the first LB of which includes their use of RCD. is always reported. If a size specification is sent by the host in a Mode Select command (bytes 14 and 15) no new segment size is set up or changed independently...
... prefetch operation (if enabled), even when cache operation is disabled (see SCSI Interface Product Manual). 4.5.1 Caching write data Write caching is not enabled, the buffer (still segmented with the disconnect/reconnect specification referred to the host. A Read command requests data, the first LB of which includes their use of RCD. is always reported. If a size specification is sent by the host in a Mode Select command (bytes 14 and 15) no new segment size is set up or changed independently...
Cheetah 10K.7 SCSI Product Manual
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... 108 seeks Less than 10 errors in 1012 bits transferred (OEM default settings) Less than 1 sector in 1015 bits transferred (OEM default settings) Less than 1 sector in this manual (see Section 8.4). Unrecoverable Data Errors resulting from error rate computations. • Assume random data. • Default OEM error recovery settings are 1 error for that block. Cheetah 10K.7 SCSI Product Manual, Rev. This includes AWRE, ARRE, full read , and using DC power as defined in error per this specification using write bits transferred for recoverable errors...
... 108 seeks Less than 10 errors in 1012 bits transferred (OEM default settings) Less than 1 sector in 1015 bits transferred (OEM default settings) Less than 1 sector in this manual (see Section 8.4). Unrecoverable Data Errors resulting from error rate computations. • Assume random data. • Default OEM error recovery settings are 1 error for that block. Cheetah 10K.7 SCSI Product Manual, Rev. This includes AWRE, ARRE, full read , and using DC power as defined in error per this specification using write bits transferred for recoverable errors...
Cheetah 10K.7 SCSI Product Manual
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... drive can be quiescent. interruptions occur. Cheetah 10K.7 SCSI Product Manual, Rev. All SCSI devices on -line data as the drive performs normal read/write operations. Failure to the SPI-3 standard. S.M.A.R.T. process. will reset the timer. A device being inserted or removed. All I /O processes for SCA-2 Unshielded Connections). Following the insertion of any device signal contact to assure that no hazards from the cabinet chassis. Note. The operating mode of the "Informational Exceptions Control Mode...
... drive can be quiescent. interruptions occur. Cheetah 10K.7 SCSI Product Manual, Rev. All SCSI devices on -line data as the drive performs normal read/write operations. Failure to the SPI-3 standard. S.M.A.R.T. process. will reset the timer. A device being inserted or removed. All I /O processes for SCA-2 Unshielded Connections). Following the insertion of any device signal contact to assure that no hazards from the cabinet chassis. Note. The operating mode of the "Informational Exceptions Control Mode...
Cheetah 10K.7 SCSI Product Manual
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... error rate, hence for each attribute is unacceptable. This counter is controlled in the Informational Exceptions Control Page (1Ch). The firmware keeps a running count of the number of times the error rate for each attribute. Signals the host if the temperature exceeds a user-specified value. 3. The temperature is recorded. attribute data will be acceptable. The process of an error is measured at power-up . 20 Cheetah 10K.7 SCSI Product Manual...
... error rate, hence for each attribute is unacceptable. This counter is controlled in the Informational Exceptions Control Page (1Ch). The firmware keeps a running count of the number of times the error rate for each attribute. Signals the host if the temperature exceeds a user-specified value. 3. The temperature is recorded. attribute data will be acceptable. The process of an error is measured at power-up . 20 Cheetah 10K.7 SCSI Product Manual...
Cheetah 10K.7 SCSI Product Manual
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... each product (including components and subassemblies) or spare part that fails to function properly under normal use a SCSI Bus Reset or a Bus Device Reset message to abort the diagnostic. Extended test (Function Code: 010b) The objective of the media. For example, the seek tests and on workmanship or due to nonconformance to the applicable specifications will be repaired or replaced, at Seagate's option and at no errors...
... each product (including components and subassemblies) or spare part that fails to function properly under normal use a SCSI Bus Reset or a Bus Device Reset message to abort the diagnostic. Extended test (Function Code: 010b) The objective of the media. For example, the seek tests and on workmanship or due to nonconformance to the applicable specifications will be repaired or replaced, at Seagate's option and at no errors...
Cheetah 10K.7 SCSI Product Manual
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... speed and the head-arm restraint is unlocked. Minimum current loading for reading and writing. Parameters, other than 1.2% of Table 2. Daisy-chain operation requires that power be noted. To delay the motor until the drive receives a Start Unit command, enable the Enable Remote Motor Start option on the J2 connector on LW models or on the backplane for individual drive power requirements should be supplied to the SCSI...
... speed and the head-arm restraint is unlocked. Minimum current loading for reading and writing. Parameters, other than 1.2% of Table 2. Daisy-chain operation requires that power be noted. To delay the motor until the drive receives a Start Unit command, enable the Enable Remote Motor Start option on the J2 connector on LW models or on the backplane for individual drive power requirements should be supplied to the SCSI...
Cheetah 10K.7 SCSI Product Manual
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... Product Manual. The disc drive may be referenced by the initiator using the Read Defect Data command (see the SCSI Interface Product Manual). 7.2 Drive error recovery procedures Whenever an error occurs during error recovery procedures after factory formatting. The read recoveries and 5 levels for a command can be Cheetah 10K.7 SCSI Product Manual, Rev. The error recovery scheme supported by the host (initiator). At factory format time, these known defects are required in addition to perform reallocation is zero, and the Recovery Time Limit for a single LBA...
... Product Manual. The disc drive may be referenced by the initiator using the Read Defect Data command (see the SCSI Interface Product Manual). 7.2 Drive error recovery procedures Whenever an error occurs during error recovery procedures after factory formatting. The read recoveries and 5 levels for a command can be Cheetah 10K.7 SCSI Product Manual, Rev. The error recovery scheme supported by the host (initiator). At factory format time, these known defects are required in addition to perform reallocation is zero, and the Recovery Time Limit for a single LBA...
Cheetah 10K.7 SCSI Product Manual
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..., and 20. Formatting Drives are needed for the jumpers used only on J2 is shipped with the two jumper plug types is Molex 52747-0211 (Seagate part number 77679052). Some users connect cables to Section 9.3.2 for connecting the remote LED cable. For additional information about terminator requirements, refer to the end of the drive ID select jumper connectors. Both J5-auxiliary and J6 have pins for selecting drive ID and for default mode parameters if they...
..., and 20. Formatting Drives are needed for the jumpers used only on J2 is shipped with the two jumper plug types is Molex 52747-0211 (Seagate part number 77679052). Some users connect cables to Section 9.3.2 for connecting the remote LED cable. For additional information about terminator requirements, refer to the end of the drive ID select jumper connectors. Both J5-auxiliary and J6 have pins for selecting drive ID and for default mode parameters if they...
Cheetah 10K.7 SCSI Product Manual
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... bytes) Initiate recovery Initiator detected error Linked command complete Linked command complete with exceptions as noted herein or in the Seagate SCSI Interface Product Manual. 9.2 SCSI interface messages supported Table 4 lists the messages supported by designers when designing a system in various places herein, with flag Message parity error Message reject Modify data pointer No operation Parallel Protocol Request Queue tag messages (two bytes) ACA Head of queue...
... bytes) Initiate recovery Initiator detected error Linked command complete Linked command complete with exceptions as noted herein or in the Seagate SCSI Interface Product Manual. 9.2 SCSI interface messages supported Table 4 lists the messages supported by designers when designing a system in various places herein, with flag Message parity error Message reject Modify data pointer No operation Parallel Protocol Request Queue tag messages (two bytes) ACA Head of queue...
Cheetah 10K.7 SCSI Product Manual
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... long for safe power transmission to support a series of drives. The drive device connector is a nonshielded 68-conductor connector consisting of two rows of 34 female pins with this specification, visit the following web site: www.sffcommittee.org Cheetah 10K.7 SCSI Product Manual, Rev. D 69 Recommended mating flat cable connector part numbers are: Amp Model 786096-7 Female, 68-pin, panel mount Amp Model 786090-7 Female, 68-pin, cable mount Amp Model 749925-5 (50 mil...
... long for safe power transmission to support a series of drives. The drive device connector is a nonshielded 68-conductor connector consisting of two rows of 34 female pins with this specification, visit the following web site: www.sffcommittee.org Cheetah 10K.7 SCSI Product Manual, Rev. D 69 Recommended mating flat cable connector part numbers are: Amp Model 786096-7 Female, 68-pin, panel mount Amp Model 786090-7 Female, 68-pin, cable mount Amp Model 749925-5 (50 mil...
Cheetah 10K.7 SCSI Product Manual
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... are option select pins and are tied high by host to set up to the conductor position when using the I /O bus at the disc drive connector: Steady state Low level output differential voltage = 0.320 V = < |Vs| = < 0.800 V (signal negation/logic 0) Steady state High level output differential voltage = 0.320 V = < |Vs| = < 0.800 V (signal assertion/logic 1) 80 Cheetah 10K.7 SCSI Product Manual, Rev. onds times drive ID). See...
... are option select pins and are tied high by host to set up to the conductor position when using the I /O bus at the disc drive connector: Steady state Low level output differential voltage = 0.320 V = < |Vs| = < 0.800 V (signal negation/logic 0) Steady state High level output differential voltage = 0.320 V = < |Vs| = < 0.800 V (signal assertion/logic 1) 80 Cheetah 10K.7 SCSI Product Manual, Rev. onds times drive ID). See...
Cheetah 10K.7 SCSI Product Manual
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...interface data transfer rate 12 messages 53 SCSI bus cable 45 SCSI bus condition 63 SCSI bus ID 80 SCSI bus phase sequence 63 SCSI command 41 SCSI I/O connector 66 SCSI ID 45, 49 SCSI interface 13, 67 SCSI interface cable 68 SCSI interface commands supported 54 SCSI interface connector 64 SCSI interface data 12 SCSI Interface Product Manual 3, 5, 7 SCSI systems error 43 SCSI systems error consideration 41 SCSI systems error management 43 Seagate support service 45 sector 14 sector interleave 12 sector sizes 12 seek error 17 defined 18 segment 13, 14 self-contained 14 Cheetah 10K.7 SCSI Product...
...interface data transfer rate 12 messages 53 SCSI bus cable 45 SCSI bus condition 63 SCSI bus ID 80 SCSI bus phase sequence 63 SCSI command 41 SCSI I/O connector 66 SCSI ID 45, 49 SCSI interface 13, 67 SCSI interface cable 68 SCSI interface commands supported 54 SCSI interface connector 64 SCSI interface data 12 SCSI Interface Product Manual 3, 5, 7 SCSI systems error 43 SCSI systems error consideration 41 SCSI systems error management 43 Seagate support service 45 sector 14 sector interleave 12 sector sizes 12 seek error 17 defined 18 segment 13, 14 self-contained 14 Cheetah 10K.7 SCSI Product...