Hitachi HTS541080G9SA00 Specifications - Page 28
Performance characteristics
UPC - 683728182632
View all Hitachi HTS541080G9SA00 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 28 highlights
4.4 Performance characteristics Drive performance is characterized by the following parameters: • Command overhead • Mechanical head positioning - Seek time - Latency • Data transfer speed • Buffering operation (Look ahead/Write cache) All the above parameters contribute to drive performance. There are other parameters that contribute to the performance of the actual system. This specification tries to define the bare drive characteristics, not system throughput, which depends on the system and the application. Table 5: Performance characteristics Function Average Random Seek Time - Read (ms) Average Random Seek Time - Write (ms) Rotational Speed (RPM) Power-on-to-ready (sec) Command overhead (ms) Disk-buffer data transfer (Mb/s) Buffer-host data transfer (Gbps) 12 13 5400 3.5 1.0 493 max 1.5 4.4.1 Command overhead Command overhead is defined as the interval from the time that a drive receives a command to the time that the actuator starts it's motion. 4.4.2 Mechanical positioning 4.4.2.1 Average seek time (including settling) Table 6: Mechanical positioning performance Command type Random track @ read Random track @ write Typical (ms) 12 13 Max (ms) 14 15 Travelstar 5K100 (Serial ATA) Hard Disk Drive Specification 16