Hitachi HTS541010G9AT00 Specifications - Page 29

The terms "Typical" and "Max" are used throughout this document and are defined as follows: Typical The average of the drive population tested at nominal environmental and voltage conditions. Max Maximum value measured on any one drive over the full range of the environmental and voltage conditions. (See Section 6.2, "Environment" on page 27 and Section 6.3, "DC power require- ments" on page 29 for ranges.) The seek time is measured from the start of the actuator's motion to the start of a reliable read or write operation. A reliable read or write implies that error correction or recovery is not used to correct arrival problems. The average seek time is measured as the weighted average of all possible seek combinations. max Σ (Max.+1 -n)(Tnin + Tnout) n=1 Weighted Average (max + 1)(max) where max n Tnin Tnout = Maximum seek length = Seek length (1 to max) = Inward measured seek time for an n track seek = Outward measured seek time for an n track seek 4.4.2.2 Full stroke seek time (without command overhead, including settling) Table 7: Full stroke seek time Function Read Write Typical (ms) 23.0 24.0 Max (ms) 30.0 31.0 Full stroke seek is measured as the average of 1,000 full stroke seeks with a random head switch from both directions (inward and outward). 4.4.2.3 Single track seek time (without command overhead, including settling) Table 8: Single track seek time Function Read Write Typical (ms) 2.5 3.0 Max (ms) 4.0 4.5 Single track seek is measured as the average of one (1) single track seek from every track in both directions (inward and outward). Travelstar 5K100 (Sreial ATA) Hard Disk Drive Specification 17