Seagate ST3300056FC (FDE) ユーザーズマニュアル

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Cheetah 15K.6 FC Product Manual, Rev. C
9
3.2
Media description
The media used on the drive has an aluminum substrate coated with a thin film magnetic material, overcoated 
with a proprietary protective layer for improved durability and environmental protection.
3.3
Performance
• Programmable multi-segmentable cache buffer 
• 400 Mbytes/sec maximum instantaneous data transfers per port
• 15k RPM spindle; average latency = 2.0 msec
• Command queuing of up to
 
128 commands
• Background processing of queue
• Supports start and stop commands (spindle stops spinning)
• Adaptive seek velocity; improved seek performance
Note.
There is no significant performance difference between FDE and non-FDE models
3.4
Reliability
• Annualized Failure Rate (AFR) of 0.55%
• Increased LSI circuitry integration
• Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)
• Dithering
• 5-year warranty
3.5
Formatted capacities
Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and 
must be one of the supported sizes listed in the table below.
Seagate designs specify capacity points at certain block sizes that Seagate guarantees current and future 
products will meet. We recommend customers use this capacity in their project planning, as it ensures a stable 
operating point with backward and forward compatibility from generation to generation. The current guaranteed 
operating points for this product are:
 
 
3.5.1
Programmable drive capacity
Using the Mode Select command, the drive can change its capacity to something less than maximum. See the 
Mode Select Parameter List table in the SCSI Commands Reference Manual. Refer to the Parameter list block 
descriptor number of blocks field. A value of zero in the number of blocks field indicates that the drive shall not 
change the capacity it is currently formatted to have. A number in the number of blocks field that is less than 
the maximum number of LBAs changes the total drive capacity to the value in the block descriptor number of 
blocks field. A value greater than the maximum number of LBAs is rounded down to the maximum capacity.
Sector Size
ST3450856FC
 
ST3450056FC 
ST3300656FC
 
ST3300056FC 
ST3146356FC 
 
ST3146756FC  
Decimal
Hex
Decimal
Hex
Decimal
Hex
512 879,097,968
3465F870
585,937,500
22ECB25C
286,749,488
11177330
520 860,480,771
3349E503
573,653,848
22314358
280,790,185
10BC84A9
524 849,011,700
329AE3F4
566,007,800
21BC97F8
275,154,368
106685C0
528 836,812,167
31E0BD87
557,874,778
21407E5A
272,662,935
10408197