Seagate ST9146852SS ユーザーズマニュアル

8

Savvio 15K.2 SAS Product Manual, Rev. E

• Firmware-controlled multisegmented cache designed to dynamically adjust segments for enhanced system 

performance

• 600 Mbytes/sec maximum instantaneous data transfers
• 15k RPM spindle. Average latency = 2.0 msec
• Background processing of queue
• Supports start and stop commands (spindle stops spinning)
• Adaptive seek velocity; improved seek performance

There is no significant performance difference between Self-Encrypting Drive and standard (non-
Self-Encrypting Drive) models.

• Annualized Failure Rate (AFR) of 0.55%
• Mean Time Between Failures (MTBF) of 1,600,000 hours
• Balanced low mass rotary voice coil actuator
• Incorporates industry-standard Self-Monitoring Analysis and Reporting Technology (S.M.A.R.T.)
• 5-year warranty

Standard OEM models are formatted to 512 bytes per block. The block size is selectable at format time and 
must be a multiple of 4 bytes. 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:

Seagate designs 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: 

286,749,488

11177330

143,374,744

88BB998

280,790,185

10BC84A9

140,395,093

85E4255

275,154,368

106685C0

137,577,184

83342E0

272,662,935

10408197

136,331,467

82040CB