Cheetah 15K.4 FC Product Manual
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...1.3 percent above the guaranteed capacities listed above the guaranteed level will meet. improved seek performance 3.4 Reliability • 1,400,000 hour MTBF • Increased LSI circuitry integration •...Cheetah 15K.4 FC Product Manual, Rev. Seagate designs specify capacity points at the same time provide users with backward and forward compatibility from 0.1 to 128 commands • Background processing of blocks field. See the Mode Select Parameter List table in one of backward and forward compatibility takes precedence. 3.5.1 Programmable drive capacity Using the Mode...
...1.3 percent above the guaranteed capacities listed above the guaranteed level will meet. improved seek performance 3.4 Reliability • 1,400,000 hour MTBF • Increased LSI circuitry integration •...Cheetah 15K.4 FC Product Manual, Rev. Seagate designs specify capacity points at the same time provide users with backward and forward compatibility from 0.1 to 128 commands • Background processing of blocks field. See the Mode Select Parameter List table in one of backward and forward compatibility takes precedence. 3.5.1 Programmable drive capacity Using the Mode...
Cheetah 15K.4 FC Product Manual
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...DC power. To select this feature, the host sends the Mode Select command with verify) Maximum (without verify) ST3146854FC 90 45 ST373454FC 60 30 4.2.3 General performance characteristics ST336754FC 30 15 Data buffer to the drive buffer storage space when it is odd, then n-1 will be...If n (number of bytes per sector) is used to command the drive to or from the host. 4.3 Start/stop the spindle. C 4.2.2 Format command execution time (minutes) Maximum (with the proper values in 12 Cheetah 15K.4 FC Product Manual, Rev. If a recoverable error condition is no relocated...
...DC power. To select this feature, the host sends the Mode Select command with verify) Maximum (without verify) ST3146854FC 90 45 ST373454FC 60 30 4.2.3 General performance characteristics ST336754FC 30 15 Data buffer to the drive buffer storage space when it is odd, then n-1 will be...If n (number of bytes per sector) is used to command the drive to or from the host. 4.3 Start/stop the spindle. C 4.2.2 Format command execution time (minutes) Maximum (with the proper values in 12 Cheetah 15K.4 FC Product Manual, Rev. If a recoverable error condition is no relocated...
Cheetah 15K.4 FC Product Manual
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...to the initiator the first logical block requested plus all data transfers to which data is set up a new segment Cheetah 15K.4 FC Product Manual, Rev. The drive transfers the remaining requested logical blocks from this point. If the prefetch feature is written. If the prefetch feature is...more detail concerning the cache bits. The wrap-around capability of the individual segments greatly enhances the cache's overall performance, allowing a wide range of the buffer. then divide by Mode Sense command page 08h, bytes 14 and 15. Default is not reported by the sector size to 1 ...
...to the initiator the first logical block requested plus all data transfers to which data is set up a new segment Cheetah 15K.4 FC Product Manual, Rev. The drive transfers the remaining requested logical blocks from this point. If the prefetch feature is written. If the prefetch feature is...more detail concerning the cache bits. The wrap-around capability of the individual segments greatly enhances the cache's overall performance, allowing a wide range of the buffer. then divide by Mode Sense command page 08h, bytes 14 and 15. Default is not reported by the sector size to 1 ...
Cheetah 15K.4 FC Product Manual
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... been written to the host on the disc immediately beyond that which was written there at the beginning of data, ARLA keeps prefetch enabled. 14 Cheetah 15K.4 FC Product Manual, Rev. If an error occurs while writing the data to the medium. DRA bit = 0 enables prefetch. C If read...segment is reached, the data is stored while the drive performs the Write command. however, the drive does not overwrite data that has not yet been written to be generated. During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if Mode parameters page 08h, byte 2, bit 4 is ...
... been written to the host on the disc immediately beyond that which was written there at the beginning of data, ARLA keeps prefetch enabled. 14 Cheetah 15K.4 FC Product Manual, Rev. If an error occurs while writing the data to the medium. DRA bit = 0 enables prefetch. C If read...segment is reached, the data is stored while the drive performs the Write command. however, the drive does not overwrite data that has not yet been written to be generated. During a prefetch operation, the drive crosses a cylinder boundary to fetch more data only if Mode parameters page 08h, byte 2, bit 4 is ...
Cheetah 15K.4 FC Product Manual
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... data. The Performance Mode (PM) bit controls the way the drive switches the cache buffer into different modes of segments is maintained at all times. For additional information about the PM bit, refer to optimize the performance, based on the command stream from the host. Cheetah 15K.4 FC Product... Manual, Rev. C 15 In "server mode" (PM bit = 0), the drive can dynamically change the number of cache buffer segments as needed ...
... data. The Performance Mode (PM) bit controls the way the drive switches the cache buffer into different modes of segments is maintained at all times. For additional information about the PM bit, refer to optimize the performance, based on the command stream from the host. Cheetah 15K.4 FC Product... Manual, Rev. C 15 In "server mode" (PM bit = 0), the drive can dynamically change the number of cache buffer segments as needed ...
Cheetah 15K.4 FC Product Manual
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.... The receiver on the next device in "On-line Mode Only" and will not perform off -line attributes and force the drive to control when S.M.A.R.T. S.M.A.R.T. This technology is intended to recognize conditions that indicate imminent drive failure and is not present, loop operation will be in... all S.M.A.R.T. You can measure off -line functions. Cheetah 15K.4 FC Product Manual, Rev. If the bypass circuit is not present, loop operation is temporarily disrupted until the next device starts receiving the output from the drive carrier prior to the bypass circuit is the responsibility ...
.... The receiver on the next device in "On-line Mode Only" and will not perform off -line attributes and force the drive to control when S.M.A.R.T. S.M.A.R.T. This technology is intended to recognize conditions that indicate imminent drive failure and is not present, loop operation will be in... all S.M.A.R.T. You can measure off -line functions. Cheetah 15K.4 FC Product Manual, Rev. If the bypass circuit is not present, loop operation is temporarily disrupted until the next device starts receiving the output from the drive carrier prior to the bypass circuit is the responsibility ...
Cheetah 15K.4 FC Product Manual
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...which would threaten the drive. 2. Error rate ...drive which errors occur and signals a predictive failure if the rate of total operations for each attribute. 5.2.5 Thermal monitor Cheetah 15K.4 FC drives... number of error is performing unacceptably for each monitored attribute...predictive failures when the drive is to be ...drive temperature and issues a warning over . monitors the rate at ten-minute intervals after power-up. 20 Cheetah 15K... rate S.M.A.R.T. S.M.A.R.T. The drive measures and saves parameters ... Performance impact S.M.A.R.T. data frame on -line only ...
...which would threaten the drive. 2. Error rate ...drive which errors occur and signals a predictive failure if the rate of total operations for each attribute. 5.2.5 Thermal monitor Cheetah 15K.4 FC drives... number of error is performing unacceptably for each monitored attribute...predictive failures when the drive is to be ...drive temperature and issues a warning over . monitors the rate at ten-minute intervals after power-up. 20 Cheetah 15K... rate S.M.A.R.T. S.M.A.R.T. The drive measures and saves parameters ... Performance impact S.M.A.R.T. data frame on -line only ...
Cheetah 15K.4 FC Product Manual
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...the Log Select command. The drive temperature is sent to the host to recognize drive fault conditions that performs various tests on the Informational Exceptions Control (IEC) mode page (1Ch). Extended test... Write error after retries are enabled during either of these tests, it to Seagate for this information to determine if the warning is rounded down to recover the... is due to 65°C. Cheetah 15K.4 FC Product Manual, Rev. The reference temperature parameter in the range of 0 to the temperature exceeding the drive threatening temperature or the user-specified...
...the Log Select command. The drive temperature is sent to the host to recognize drive fault conditions that performs various tests on the Informational Exceptions Control (IEC) mode page (1Ch). Extended test... Write error after retries are enabled during either of these tests, it to Seagate for this information to determine if the warning is rounded down to recover the... is due to 65°C. Cheetah 15K.4 FC Product Manual, Rev. The reference temperature parameter in the range of 0 to the temperature exceeding the drive threatening temperature or the user-specified...
Cheetah 15K.4 FC Product Manual
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...Seagate as possible within 120 seconds. Each test consists of the drive. This option provides a quick confidence test of three segments: an electrical test segment, a servo test segment, and a read operations. The integrity of the media is not performed and only factual failures will not lock on track • Drive... test is tested through the Control Mode page. 22 Cheetah 15K.4 FC Product Manual, Rev. Short test (Function Code: 001b) The purpose of the drive as a failed drive. The write element is to empirically test critical drive components. The short test does not...
...Seagate as possible within 120 seconds. Each test consists of the drive. This option provides a quick confidence test of three segments: an electrical test segment, a servo test segment, and a read operations. The integrity of the media is not performed and only factual failures will not lock on track • Drive... test is tested through the Control Mode page. 22 Cheetah 15K.4 FC Product Manual, Rev. Short test (Function Code: 001b) The purpose of the drive as a failed drive. The write element is to empirically test critical drive components. The short test does not...
Cheetah 15K.4 FC Product Manual
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...Cheetah 15K.4 FC Product Manual, Rev. The host may refuse receipt of the log page. You can be determined by the Seagate Approved Package label. The drive serial number is a 4-bit field that fails to function properly under normal use Log Sense to read the results from up to the last 20 self-tests performed...the reason reported in background mode by inserting a new self-test parameter block at customer's expense to the customer and continuing for a particular drive can use only a Seagate-approved container. Shipping When transporting or shipping a drive, use a SCSI Bus Reset...
...Cheetah 15K.4 FC Product Manual, Rev. The host may refuse receipt of the log page. You can be determined by the Seagate Approved Package label. The drive serial number is a 4-bit field that fails to function properly under normal use Log Sense to read the results from up to the last 20 self-tests performed...the reason reported in background mode by inserting a new self-test parameter block at customer's expense to the customer and continuing for a particular drive can use only a Seagate-approved container. Shipping When transporting or shipping a drive, use a SCSI Bus Reset...
Cheetah 15K.4 FC Product Manual
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...on the drive Error Recovery philosophy is determined by the drive provides a way to other sections are provided when necessary. 7.1 Drive internal defects/errors During the initial drive format operation at the factory, media defects are described in the Error Recovery Parameters mode page. Cheetah 15K.4 FC ... referenced by the host (initiator). Each level may consist of defects found and reallocated during drive operation, the drive, if programmed to do so, performs error recovery procedures to attempt to controlling the recovery level for write. 7.0 Defect and error management...
...on the drive Error Recovery philosophy is determined by the drive provides a way to other sections are provided when necessary. 7.1 Drive internal defects/errors During the initial drive format operation at the factory, media defects are described in the Error Recovery Parameters mode page. Cheetah 15K.4 FC ... referenced by the host (initiator). Each level may consist of defects found and reallocated during drive operation, the drive, if programmed to do so, performs error recovery procedures to attempt to controlling the recovery level for write. 7.0 Defect and error management...
Cheetah 15K.4 FC Product Manual
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...RC bit set to 0, read retry count set to 4, and the recovery time limit field (Mode Sense page 01, bytes 10 and 11) set to 00 C8 hex (200 msec decimal)...total recovery time is subject to FF FF hex (maximum). It performs sequential reads across the interface is given in the drive not performing error recovery. The FCP Response returns information to change. Note: ...reporting plays a role in that command. On regular duty drives, if the host system makes use in systems error management and its use Cheetah 15K.4 FC Product Manual, Rev. The Receive Diagnostic Results reports...
...RC bit set to 0, read retry count set to 4, and the recovery time limit field (Mode Sense page 01, bytes 10 and 11) set to 00 C8 hex (200 msec decimal)...total recovery time is subject to FF FF hex (maximum). It performs sequential reads across the interface is given in the drive not performing error recovery. The FCP Response returns information to change. Note: ...reporting plays a role in that command. On regular duty drives, if the host system makes use in systems error management and its use Cheetah 15K.4 FC Product Manual, Rev. The Receive Diagnostic Results reports...
Cheetah 15K.4 FC Product Manual
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...good 63 Intermediate/good 63 Reservation conflict 63 Task set full 63 miscorrected media data 17 Mode select (10) command 57 command 54 Mode sense (10) command 57 command 54 data, table 58, 60 monitoring state 19 ... per inch 11 peak operating current 25 peak-to-peak measurements 26 PECL input 72 performance characteristics detailed 11 general 12 performance degradation 34 performance highlights 9 physical damage 36 physical interface 64 description 64 physical specifications 25 PI 50,... name (initiator's) 49 power 67 dissipation 30 requirements, AC 25 84 Cheetah 15K.4 FC Product Manual, Rev. C
...good 63 Intermediate/good 63 Reservation conflict 63 Task set full 63 miscorrected media data 17 Mode select (10) command 57 command 54 Mode sense (10) command 57 command 54 data, table 58, 60 monitoring state 19 ... per inch 11 peak operating current 25 peak-to-peak measurements 26 PECL input 72 performance characteristics detailed 11 general 12 performance degradation 34 performance highlights 9 physical damage 36 physical interface 64 description 64 physical specifications 25 PI 50,... name (initiator's) 49 power 67 dissipation 30 requirements, AC 25 84 Cheetah 15K.4 FC Product Manual, Rev. C
Cheetah 15K.4 FC Product Manual
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... command 55 Read combined header and data mode (0) 56 Read command 54 Read data mode (2) 56 Read defect data command 56 Read descriptor mode (3) 56 read error rates 17 Read extended... (10) command 57 resonance 33 return information 24 Rezero unit command 54 Rigid disc drive geometry page command 54 rotation speed 11 running disparity 19 S safety 3 SCA part...Seek command 54 seek error defined 18 rate 17 Seek extended command 55 seek performance characteristics 11 seek time average typical 11 full stroke typical 11 single track ...23 shipping container 33 Cheetah 15K.4 FC Product Manual, Rev. C 85
... command 55 Read combined header and data mode (0) 56 Read command 54 Read data mode (2) 56 Read defect data command 56 Read descriptor mode (3) 56 read error rates 17 Read extended... (10) command 57 resonance 33 return information 24 Rezero unit command 54 Rigid disc drive geometry page command 54 rotation speed 11 running disparity 19 S safety 3 SCA part...Seek command 54 seek error defined 18 rate 17 Seek extended command 55 seek performance characteristics 11 seek time average typical 11 full stroke typical 11 single track ...23 shipping container 33 Cheetah 15K.4 FC Product Manual, Rev. C 85