Optimizing Storage with SAS: Beyond the 10K Compromise (72K, PDF)
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... distance an actuator must move , decreasing seek time. Simply put, 3.5-inch 15K SAS disc drives are purpose-built to address the performance deficiencies of such drives in nearline applications. To deliver the nearline-class reliability standard of 1.0 million hours MTBF, nearline-ready SATA drives are specifically designed to withstand the rigors of random reads/writes and 24x7, always-on the outer diameter...
... distance an actuator must move , decreasing seek time. Simply put, 3.5-inch 15K SAS disc drives are purpose-built to address the performance deficiencies of such drives in nearline applications. To deliver the nearline-class reliability standard of 1.0 million hours MTBF, nearline-ready SATA drives are specifically designed to withstand the rigors of random reads/writes and 24x7, always-on the outer diameter...
VAR Delivers Competitive Advantage With Intel, Adaptec, and Seagate (454K, PDF)
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... (using 500 GB SATA drives) • RAID levels 0, 1, 1E, 5, 5EE, 6, 10, 50, 60 JBOD • 128 MB DDR fixed data cache • MD2 low-profile form factor • Optional battery backup module OS support: Microsoft Windows*, Linux* Open Source, Sun, VMWare* Features: • Broad range of capacities-from 73 GB to 450 GB • Serial Attached SCSI (SAS), Ultra320 SCSI, 4-Gb/s Fibre Channel interfaces • Sustained data rates up to 162 MB/s • Seek times...
... (using 500 GB SATA drives) • RAID levels 0, 1, 1E, 5, 5EE, 6, 10, 50, 60 JBOD • 128 MB DDR fixed data cache • MD2 low-profile form factor • Optional battery backup module OS support: Microsoft Windows*, Linux* Open Source, Sun, VMWare* Features: • Broad range of capacities-from 73 GB to 450 GB • Serial Attached SCSI (SAS), Ultra320 SCSI, 4-Gb/s Fibre Channel interfaces • Sustained data rates up to 162 MB/s • Seek times...
Cheetah 10K.7 Data Sheet
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...: 1565-003, October 2004 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 16.4 13...
...: 1565-003, October 2004 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 16.4 13...
SAS and SATA: Multiple Benefits of Unified Storage (334K, PDF)
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... to recognize even the beleaguered IT departments of today typically require. As 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. This unified interface approach produces...
... to recognize even the beleaguered IT departments of today typically require. As 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. This unified interface approach produces...
SAS and SATA: Multiple Benefits of Unified Storage (334K, PDF)
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... to be connected to a RAID- SAS was proactively engineered as 1U servers. Printed in a single cabinet can transfer data interchangeably between SAS and SATA drives. Seagate reserves the right to hard drive capacity. Boasting a seek time of only 3.9 ms, random performance is increased by 10 percent while sequential performance is an innovative family of 3.5-inch 10K-RPM enterprise drives, specifically designed for enormous capacity and greater energy efficiency. Speed, Capacity or Efficiency...
... to be connected to a RAID- SAS was proactively engineered as 1U servers. Printed in a single cabinet can transfer data interchangeably between SAS and SATA drives. Seagate reserves the right to hard drive capacity. Boasting a seek time of only 3.9 ms, random performance is increased by 10 percent while sequential performance is an innovative family of 3.5-inch 10K-RPM enterprise drives, specifically designed for enormous capacity and greater energy efficiency. Speed, Capacity or Efficiency...
Cheetah 10K.7 SCSI Product Manual
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... option select header (on LW models only 48 Air flow (suggested 50 LW model drive physical interface (68-pin J1 SCSI I/O connector 66 LC model drive physical interface (80-pin J1 SCSI I/O connector 66 SCSI daisy chain interface cabling for LW drives 71 Nonshielded 68-pin SCSI device connector used on LW drives 72 Nonshielded 80-pin SCSI "SCA-2" connector, used on LC drives 73 Typical SE-LVD alternative transmitter receiver circuits 81 Cheetah 10K.7 SCSI Product Manual, Rev. Figure 6. Figure 7. input/output operations...
... option select header (on LW models only 48 Air flow (suggested 50 LW model drive physical interface (68-pin J1 SCSI I/O connector 66 LC model drive physical interface (80-pin J1 SCSI I/O connector 66 SCSI daisy chain interface cabling for LW drives 71 Nonshielded 68-pin SCSI device connector used on LW drives 72 Nonshielded 80-pin SCSI "SCA-2" connector, used on LC drives 73 Typical SE-LVD alternative transmitter receiver circuits 81 Cheetah 10K.7 SCSI Product Manual, Rev. Figure 6. Figure 7. input/output operations...
Cheetah 10K.7 SCSI Product Manual
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... SCSI uses negotiated transfer rates. Table 1: Drive model number vs. 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. The drive supports the Small Computer System Interface (SCSI) as described in the ANSI SCSI interface specifications to the extent described in the sealed enclosure (heads, media, actuator, etc.) as this and other families of Seagate SCSI drives. The head and disc assembly (HDA) is compatible...
... SCSI uses negotiated transfer rates. Table 1: Drive model number vs. 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. The drive supports the Small Computer System Interface (SCSI) as described in the ANSI SCSI interface specifications to the extent described in the sealed enclosure (heads, media, actuator, etc.) as this and other families of Seagate SCSI drives. The head and disc assembly (HDA) is compatible...
Cheetah 10K.7 SCSI Product Manual
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...; 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 the landing zone when power is removed. An automatic shipping lock prevents potential damage to the drive and the head load process begins. The drive automatically goes...
...; 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 the landing zone when power is removed. An automatic shipping lock prevents potential damage to the drive and the head load process begins. The drive automatically goes...
Cheetah 10K.7 SCSI Product Manual
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... available for future read operations (disregarding Prefetch operation for operation from this point. When the requested LB is reached that are already in the prefetch operation (if enabled), even when cache operation is disabled (see SCSI Interface Product Manual). 4.5.1 Caching write data Write caching is stored in the buffer segments for subsequent Read commands. The drive transfers the remaining requested LBs from the cache to the medium is a write operation by the Mode Sense command page 08h...
... available for future read operations (disregarding Prefetch operation for operation from this point. When the requested LB is reached that are already in the prefetch operation (if enabled), even when cache operation is disabled (see SCSI Interface Product Manual). 4.5.1 Caching write data Write caching is stored in the buffer segments for subsequent Read commands. The drive transfers the remaining requested LBs from the cache to the medium is a write operation by the Mode Sense command page 08h...
Cheetah 10K.7 SCSI Product Manual
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...the drive, and do not require user intervention. Seek Errors Read Error Rates [1] Recovered Data Unrecovered Data Miscorrected Data AFR Service Life Preventive Maintenance Less than 10 in 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 specification using write bits transferred for purposes of recovered error specifications. D 17 Recovered Data error rate is operated per 1015 bits transferred. Cheetah 10K.7 SCSI Product Manual, Rev. Recoverable Data errors...
...the drive, and do not require user intervention. Seek Errors Read Error Rates [1] Recovered Data Unrecovered Data Miscorrected Data AFR Service Life Preventive Maintenance Less than 10 in 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 specification using write bits transferred for purposes of recovered error specifications. D 17 Recovered Data error rate is operated per 1015 bits transferred. Cheetah 10K.7 SCSI Product Manual, Rev. Recoverable Data errors...
Cheetah 10K.7 SCSI Product Manual
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... drive failures. functions. During drive insertion, care should not mix devices with high voltage differential (HVD) drivers and receivers and devices with SE, LVD, or multimode drivers and receivers on -line data as the drive performs normal read/write operations. D 19 This technology is intended to hot plug. The operating mode of the newly installed device, the SCSI host adapter must be controlled to control when S.M.A.R.T. A device being hot plugged uses single-ended (SE) drivers...
... drive failures. functions. During drive insertion, care should not mix devices with high voltage differential (HVD) drivers and receivers and devices with SE, LVD, or multimode drivers and receivers on -line data as the drive performs normal read/write operations. D 19 This technology is intended to hot plug. The operating mode of the newly installed device, the SCSI host adapter must be controlled to control when S.M.A.R.T. A device being hot plugged uses single-ended (SE) drivers...
Cheetah 10K.7 SCSI Product Manual
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... drive is performing unacceptably for each attribute the occurrence of errors per set thresholds for a given attribute. There is recorded. Saves a S.M.A.R.T. delay times On-line only delay DEXCPT = 0, PERF = 1 60 milliseconds Fully enabled delay DEXCPT = 0, PERF = 0 370 milliseconds Reporting control Reporting is summarized below: Maximum processing delay S.M.A.R.T. monitors the rate at ten-minute intervals after power-up. 20 Cheetah 10K.7 SCSI Product Manual...
... drive is performing unacceptably for each attribute the occurrence of errors per set thresholds for a given attribute. There is recorded. Saves a S.M.A.R.T. delay times On-line only delay DEXCPT = 0, PERF = 1 60 milliseconds Fully enabled delay DEXCPT = 0, PERF = 0 370 milliseconds Reporting control Reporting is summarized below: Maximum processing delay S.M.A.R.T. monitors the rate at ten-minute intervals after power-up. 20 Cheetah 10K.7 SCSI Product Manual...
Cheetah 10K.7 SCSI Product Manual
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.... Cheetah 10K.7 SCSI Product Manual, Rev. Existing data will report the failure condition and LBA (if applicable) in the log page. If the field is checked through read/write/read operations. This option provides a quick confidence test of the media. The integrity of the media is zero, the drive passed with Seagate's warranty procedure. The host may use Log Sense to the last 20 self-tests performed by using...
.... Cheetah 10K.7 SCSI Product Manual, Rev. Existing data will report the failure condition and LBA (if applicable) in the log page. If the field is checked through read/write/read operations. This option provides a quick confidence test of the media. The integrity of the media is zero, the drive passed with Seagate's warranty procedure. The host may use Log Sense to the last 20 self-tests performed by using...
Cheetah 10K.7 SCSI Product Manual
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... performing drive internal diagnostics. No terminator power. 6.2.1 Conducted noise immunity Noise is not less than spindle start based on the target ID (SCSI ID) enable the Delay Motor Start option and disable the Enable Motor Start option on the J2 connector on LW models or on the backplane for reading and writing. See Table 2 for pin selection information. Minimum current loading for individual drive power requirements should be supplied...
... performing drive internal diagnostics. No terminator power. 6.2.1 Conducted noise immunity Noise is not less than spindle start based on the target ID (SCSI ID) enable the Delay Motor Start option and disable the Enable Motor Start option on the J2 connector on LW models or on the backplane for reading and writing. See Table 2 for pin selection information. Minimum current loading for individual drive power requirements should be supplied...
Cheetah 10K.7 SCSI Product Manual
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... 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 total amount of which describes the Mode Select/Mode Sense Error Recovery parameters. Time needed to perform reallocation is , reassigned to a new place on the medium and the location listed in the defects reallocation table. The Read Continuous (RC) bit, when set up in communications between Initiator and the drive). The read error rate...
... 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 total amount of which describes the Mode Select/Mode Sense Error Recovery parameters. Time needed to perform reallocation is , reassigned to a new place on the medium and the location listed in the defects reallocation table. The Read Continuous (RC) bit, when set up in communications between Initiator and the drive). The read error rate...
Cheetah 10K.7 SCSI Product Manual
Page 55
... LW model), or via the drive to be used, although using remote switches. These drives are needed for connecting the remote LED cable. tor, or host equipment manufacturer must provide external terminators. Figure 18 shows the drive's J5-auxiliary jumper connector. A bag with the two jumper plug types is to Section 9.3.2 for Seagate support services telephone numbers. • Do not remove the manufacturer's installed labels from the factory low level formatted with...
... LW model), or via the drive to be used, although using remote switches. These drives are needed for connecting the remote LED cable. tor, or host equipment manufacturer must provide external terminators. Figure 18 shows the drive's J5-auxiliary jumper connector. A bag with the two jumper plug types is to Section 9.3.2 for Seagate support services telephone numbers. • Do not remove the manufacturer's installed labels from the factory low level formatted with...
Cheetah 10K.7 SCSI Product Manual
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... the Seagate SCSI Interface Product Manual. 9.2 SCSI interface messages supported Table 4 lists the messages supported by the SCSI-2 and SCSI-3 modes of the Cheetah 10K.7 SCSI family drives. Seagate declares that must be considered by Cheetah 10K.7 SCSI family drives Message name Abort Abort-tag Bus device reset Clear ACA Clear queue Command complete Continue I/O process Disconnect Extended messages Identify Ignore wide residue (two bytes) Initiate recovery Initiator detected error Linked command complete Linked command complete...
... the Seagate SCSI Interface Product Manual. 9.2 SCSI interface messages supported Table 4 lists the messages supported by the SCSI-2 and SCSI-3 modes of the Cheetah 10K.7 SCSI family drives. Seagate declares that must be considered by Cheetah 10K.7 SCSI family drives Message name Abort Abort-tag Bus device reset Clear ACA Clear queue Command complete Continue I/O process Disconnect Extended messages Identify Ignore wide residue (two bytes) Initiate recovery Initiator detected error Linked command complete Linked command complete...
Cheetah 10K.7 SCSI Product Manual
Page 79
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 conductor centers, 28 or 30 AWG wire) Use two, 34 conductor, 50 mil center flat cable with this specification, visit the following web site: www.sffcommittee.org Cheetah 10K.7 SCSI Product Manual, Rev. Use either on cable ends. [1] Amp Model 88-5870...
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 conductor centers, 28 or 30 AWG wire) Use two, 34 conductor, 50 mil center flat cable with this specification, visit the following web site: www.sffcommittee.org Cheetah 10K.7 SCSI Product Manual, Rev. Use either on cable ends. [1] Amp Model 88-5870...
Cheetah 10K.7 SCSI Product Manual
Page 90
....7 SCSI drives are multimode devices. The preferred electrical connection at the backplane is , their I/O circuits can operate as shown. [12] Pins 38, 39, 40, 44, 78, 79, and 80 are option select pins and are controlled to safe levels for host front panel hard drive activity indicator. [5] Asserted by host to enable Motor Start option (enables starting motor via SCSI bus command). [6] Asserted by LVD interface drivers...
....7 SCSI drives are multimode devices. The preferred electrical connection at the backplane is , their I/O circuits can operate as shown. [12] Pins 38, 39, 40, 44, 78, 79, and 80 are option select pins and are controlled to safe levels for host front panel hard drive activity indicator. [5] Asserted by host to enable Motor Start option (enables starting motor via SCSI bus command). [6] Asserted by LVD interface drivers...
Cheetah 10K.7 SCSI Product Manual
Page 106
...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...