The seek time is measured from the start of motion of the actuator to the start of a reliable read or write
operation. Reliable read or write implies that error correction/recovery is not employed to correct for arrival
problems. The Average Seek Time is measured as the weighted average of all possible seek combinations.
m a x
S U M ( m a x + 1
Ä
n ) ( T n . i n + T n . o u t )
n = 1
W e i g h t e d A v e r a g e =
ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ
( m a x + 1 ) ( m a x )
W h e r e :
m a x
= M a x i m u m S e e k L e n g t h
n
= S e e k L e n g t h ( 1 t o m a x )
T n . i n
= I n w a r d m e a s u r e d s e e k t i m e f o r a n t r a c k s e e k
T n . o u t = O u t w a r d m e a s u r e d s e e k t i m e f o r a n t r a c k s e e k
3.3.3
Single Track Seek Time
Figure 7. Single Track Seek Time
Single track seek is measured as the average of one (1) single track seek from every track in both directions
(inward and outward).
Function
Typical
Max
R E A D
4 msec
5.5 msec
Write
4 msec
6.5 msec
Drive Characteristics
11
Summary of Contents for DTCA-23240 - Travelstar 3.2 GB Hard Drive
Page 2: ......
Page 11: ...Figure 2 Breathing hole caution of DTCA 23240 24090 General 3...
Page 12: ...4 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 14: ...6 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 15: ...Part 1 Functional Specification Copyright IBM Corp 1997 7...
Page 16: ...8 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 26: ...18 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 42: ...34 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 62: ...54 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 63: ...Part 2 ATA Interface Specification Copyright IBM Corp 1997 55...
Page 64: ...56 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 66: ...58 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 68: ...60 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 96: ...88 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 102: ...94 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 177: ...Command Descriptions 169...
Page 178: ...170 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...
Page 181: ...Timings 173...
Page 182: ...174 OEM Specifications of DTCA 2xxxx 2 5 inch HDD...