Cheetah NS 10K.2 FC Product Manual, Rev. B
9
3.3
Performance
• Programmable multi-segmentable cache buffer
• 800 Mbytes/sec maximum instantaneous data transfers per port
• 10k RPM spindle. Average latency = 2.98 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
3.4
Reliability
• Annualized Failure Rate (AFR) of 0.55%
• Mean Time Between Failures (MTBF) of 1,600,000 hours
• Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)
• 5-year warranty
3.5
Formatted capacities
Standard OEM models are formatted to 512 bytes per block. The sector size is selectable at format time. Users
having the necessary equipment may modify the data block size before issuing a format command and obtain
different formatted capacities than those listed.
To provide a stable target capacity environment and at the same time provide users with flexibility if they
choose, Seagate recommends product planning in one of two modes:
1. Seagate designs specify capacity points at certain sector 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:
Sector Size
ST3600002FC
ST3450802FC
ST3300602FC
Decimal
Decimal
Decimal
512
1,172,123,568
879,097,968
585,937,500
520
1,147,307,694
860,480,771
573,653,848
524
1,132,015,600
849,011,700
566,007,800
528
1,115,749,556
836,812,167
557,874,778
2. Seagate drives also may be used at the maximum available capacity at a given sector size, but the excess
capacity above the guaranteed level will vary between 10K and 15K families and from generation to gener-
ation, depending on how each sector size actually formats out for zone frequencies and splits over servo
bursts. This added capacity potential may range from 0.1 to 1.3 percent above the guaranteed capacities
listed above. Using the drives in this manner gives the absolute maximum capacity potential, but the user
must determine if the extra capacity potential is useful, or whether their assurance of backward and for-
ward compatibility takes precedence.
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