Seagate Cheetah 15K Cheetah 15K.7 FC Product Manual - Page 16
Performance characteristics - hard drive
View all Seagate Cheetah 15K manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 16 highlights
5.0 Performance characteristics This section provides detailed information concerning performance-related characteristics and features of Cheetah 15K.7 FC drives. 5.1 Internal drive characteristics Drive capacity Read/write data heads Tracks per inch Peak bits per inch Areal Density Internal data rate disk rotation speed Avg rotational latency ST3600057FC ST3600957FC ST3600857FC 600 8 165,000 1,361 225 1.49 - 2.37 15k 2.0 ST3450857FC ST3450757FC ST3450657FC 450 6 165,000 1,361 225 1.49 - 2.37 15k 2.0 ST3300657FC ST3300557FC ST3300457FC 300 4 165,000 1,361 225 1.49 - 2.37 15k 2.0 Gbytes (formatted, rounded off value)* TPI KBPI Gbits/inch2 Gbits/sec (max) RPM msec *One Gbyte equals one billion bytes when referring to hard drive capacity. Accessible capacity may vary depending on operating environment and formatting. 5.2 Seek performance characteristics See Section 12.5, "FC-AL physical interface" on page 65 and the Fibre Channel Interface Manual (part number 77767496) for additional timing details. 5.2.1 Access time Not including controller overhead1,2(msec) Average Single track Typical Typical Read 3.4 0.2 Write 3.9 0.44 Full stroke Typical 6.6 7.4 1. Typical access times are measured under nominal conditions of temperature, voltage, and horizontal orientation as measured on a representative sample of drives. 2. Access to data = access time + latency time. 10 Cheetah 15K.7 FC Product Manual, Rev. C