Cheetah 15K.4 FC Product Manual
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...Cheetah 15K.4 FC family disc drive 1 Typical ST3146854FC drive, 2 Gbit, +12V current profile 27 Typical ST3146854FC drive, 2 Gbit, +5V current profile 27 Typical ST373454FC drive +12V current profile 28 Typical ST373454FC drive +5V current profile 28 Typical ST336754FC drive +12V current profile 29 Typical ST336754FC drive +5V current profile 29 ST3146854FC... 65 J6 connector dimensions 65 FC-AL transmitters and receivers 67 Transmit eye diagram 72 Receive eye diagram 73 Cheetah 15K.4 FC Product Manual, Rev. Figure 8. Figure 9. Figure 21. Figure 2. Figure 7. Figure 11. Figure...
...Cheetah 15K.4 FC family disc drive 1 Typical ST3146854FC drive, 2 Gbit, +12V current profile 27 Typical ST3146854FC drive, 2 Gbit, +5V current profile 27 Typical ST373454FC drive +12V current profile 28 Typical ST373454FC drive +5V current profile 28 Typical ST336754FC drive +12V current profile 29 Typical ST336754FC drive +5V current profile 29 ST3146854FC... 65 J6 connector dimensions 65 FC-AL transmitters and receivers 67 Transmit eye diagram 72 Receive eye diagram 73 Cheetah 15K.4 FC Product Manual, Rev. Figure 8. Figure 9. Figure 21. Figure 2. Figure 7. Figure 11. Figure...
Cheetah 15K.4 FC Product Manual
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...85E4254 8500BB2 83342E0 ST3146854FC Decimal 286,749,488 282,050,768 280,790,184 279,041,740 275,154,368 Hex 11177330 10CFC0D0 10BC84A8 10A1D6CC 106685C0 2. To provide a stable target capacity environment and at certain sector sizes that the drive shall not Cheetah 15K.4 FC Product ...Manual, Rev. Refer to 128 commands • Background processing of blocks field. Seagate designs specify capacity points at the same time provide users with backward and ...
...85E4254 8500BB2 83342E0 ST3146854FC Decimal 286,749,488 282,050,768 280,790,184 279,041,740 275,154,368 Hex 11177330 10CFC0D0 10BC84A8 10A1D6CC 106685C0 2. To provide a stable target capacity environment and at certain sector sizes that the drive shall not Cheetah 15K.4 FC Product ...Manual, Rev. Refer to 128 commands • Background processing of blocks field. Seagate designs specify capacity points at the same time provide users with backward and ...
Cheetah 15K.4 FC Product Manual
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... information concerning performance-related characteristics and features of Cheetah 15K.4 FC drives. 4.1 Internal drive characteristics Drive capacity Read/write data heads Bytes per track Bytes per surface Tracks per surface (total) Tracks per inch Peak bits per inch Internal data rate Disc rotation speed Avg rotational latency ST3146854FC 146.8 8 471,916 18,351 50,864 85...
... information concerning performance-related characteristics and features of Cheetah 15K.4 FC drives. 4.1 Internal drive characteristics Drive capacity Read/write data heads Bytes per track Bytes per surface Tracks per surface (total) Tracks per inch Peak bits per inch Internal data rate Disc rotation speed Avg rotational latency ST3146854FC 146.8 8 471,916 18,351 50,864 85...
Cheetah 15K.4 FC Product Manual
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...drive. 4.4 Prefetch/multi-segmented cache control The drive...drive to stop time If the Motor Start option is disabled, the drive... becomes ready within 20 seconds (excluding the error recovery procedure). 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/from the host. 4.3 Start/stop the spindle. The Motor Start command can enhance system performance. C Cache refers to the drive...drive... drive executes...
...drive. 4.4 Prefetch/multi-segmented cache control The drive...drive to stop time If the Motor Start option is disabled, the drive... becomes ready within 20 seconds (excluding the error recovery procedure). 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/from the host. 4.3 Start/stop the spindle. The Motor Start command can enhance system performance. C Cache refers to the drive...drive... drive executes...
Cheetah 15K.4 FC Product Manual
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AC power requirements 6.2 DC power requirements The voltage and current requirements for ST3146854FC and Cheetah 15K.4 FC Product Manual, Rev. Instantaneous +12V current peaks will exceed these values. Values indicated apply at nominal voltage. Table ... yet received a Start Motor command. [5] See paragraph 6.2.1, "Conducted noise immunity." The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is allowed during initial spindle start (max) DC 3σ [1] [4] 0.60 0.03 Peak operating current: Typical DCX [1]...
AC power requirements 6.2 DC power requirements The voltage and current requirements for ST3146854FC and Cheetah 15K.4 FC Product Manual, Rev. Instantaneous +12V current peaks will exceed these values. Values indicated apply at nominal voltage. Table ... yet received a Start Motor command. [5] See paragraph 6.2.1, "Conducted noise immunity." The ±5% must be maintained after the drive signifies that its power-up sequence has been completed and that the drive is allowed during initial spindle start (max) DC 3σ [1] [4] 0.60 0.03 Peak operating current: Typical DCX [1]...
Cheetah 15K.4 FC Product Manual
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... to -peak measurements and apply at nominal voltages. See Table 2 for ST373454FC and ST336754FC models. Current and power specified at the drive power connector. +5 V = +12 V = 250 mV pp from 0 to 100 kHz to 20 MHz. 800 mV pp from...ST3146854FC, ST373454FC, and ST336754FC models are typical. Where multiple units are peak-to each supply voltage is specified as a periodic and random distribution of the maximum operating current shown. 2. Decreasing +12 volt supply by 5% increases 12 volt current by 2.5%. 314 I/Os per second for maximum current requirements. 26 Cheetah 15K...
... to -peak measurements and apply at nominal voltages. See Table 2 for ST373454FC and ST336754FC models. Current and power specified at the drive power connector. +5 V = +12 V = 250 mV pp from 0 to 100 kHz to 20 MHz. 800 mV pp from...ST3146854FC, ST373454FC, and ST336754FC models are typical. Where multiple units are peak-to each supply voltage is specified as a periodic and random distribution of the maximum operating current shown. 2. Decreasing +12 volt supply by 5% increases 12 volt current by 2.5%. 314 I/Os per second for maximum current requirements. 26 Cheetah 15K...
Cheetah 15K.4 FC Product Manual
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... and total watts on the vertical axis. Amperes 1.800 1.600 1.400 1.200 1.000 0.800 0.600 0.400 0.0 ST3146854FC DC CURRENT/POWER vs THROUGHPUT (2 Gb) Random 8 Block Reads 20.00 18.00 16.00 14.00 12.00...10.00 8.00 6.00 4.00 50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0 I/Os per second 30 Cheetah 15K.4 FC Product Manual, Rev. Locate the typical I /O rate curve (see Figure 8). input/output operations per Second Power ... typical random read operations, refer to the following I /O rate for a drive in 2Gb operation is 13.96 watts (47.6 BTUs per hour, multiply watts by 3.4123.
... and total watts on the vertical axis. Amperes 1.800 1.600 1.400 1.200 1.000 0.800 0.600 0.400 0.0 ST3146854FC DC CURRENT/POWER vs THROUGHPUT (2 Gb) Random 8 Block Reads 20.00 18.00 16.00 14.00 12.00...10.00 8.00 6.00 4.00 50.0 100.0 150.0 200.0 250.0 300.0 350.0 400.0 I/Os per second 30 Cheetah 15K.4 FC Product Manual, Rev. Locate the typical I /O rate curve (see Figure 8). input/output operations per Second Power ... typical random read operations, refer to the following I /O rate for a drive in 2Gb operation is 13.96 watts (47.6 BTUs per hour, multiply watts by 3.4123.
Cheetah 15K.4 FC Product Manual
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...values are hard-coded in the drive firmware stored in a Mode Select command to set up new current and saved values, where the values are allowed to the drive, it takes saved values from the drive a list of new firmware into the saved values storage location on Port B. Table 15: Cheetah 15K.4 FC ... the media prior to the initiator. PP 50 = Inquiry data for an Inquiry command received on Port A. 70 = Inquiry data for Model ST3146854FC. An initiator can be changed only by the Mode Select command get their values from default values storage. When power is "ready." Some...
...values are hard-coded in the drive firmware stored in a Mode Select command to set up new current and saved values, where the values are allowed to the drive, it takes saved values from the drive a list of new firmware into the saved values storage location on Port B. Table 15: Cheetah 15K.4 FC ... the media prior to the initiator. PP 50 = Inquiry data for an Inquiry command received on Port A. 70 = Inquiry data for Model ST3146854FC. An initiator can be changed only by the Mode Select command get their values from default values storage. When power is "ready." Some...
Cheetah 15K.4 FC Product Manual
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Table 16: Mode Sense data saved, default and changeable values for ST3146854FC drives MODE SENSE (10 BYTE) HEADER DATA 00 ae 00 10 00 00 00 08 11 17 73 30 00 00 02 00 MODE SENSE PAGES ... 0f 00 00 00 CHG 80 06 b7 40 0f 00 00 00 READ CAPACITY DATA 11 17 73 2f 00 00 02 00 60 Cheetah 15K.4 FC Product Manual, Rev. C
Table 16: Mode Sense data saved, default and changeable values for ST3146854FC drives MODE SENSE (10 BYTE) HEADER DATA 00 ae 00 10 00 00 00 08 11 17 73 30 00 00 02 00 MODE SENSE PAGES ... 0f 00 00 00 CHG 80 06 b7 40 0f 00 00 00 READ CAPACITY DATA 11 17 73 2f 00 00 02 00 60 Cheetah 15K.4 FC Product Manual, Rev. C