Toshiba MK4006GAH Manuel D’Utilisation
Toshiba Corporation Digital Media Network Company
Page 16 of 153
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6. PERFORMANCE
MK3006GAL
MK6006GAH
MK4006GAH
Access time ( msec ) <*1>
Track to track seek <*2>
3
Average seek <*3>
15
Max. seek <*4>
26
Rotation speed ( RPM )
4,200 + 0.1%
Average Latency Time ( msec )
7.14
Internal Transfer rate ( Mbits / sec )
131.1−283.3 155−265
Host Transfer rate ( Mbytes / sec )
Ultra DMA mode
100
PIO mode
16.6
Sector Interleave
1:1
Track skew
Yes
Buffer size ( Mbytes )
2
2 or 8
2
Cache
Read Ahead Cache
Write Cache
Start time <*5>
( Up to Drive Ready)
3.5 sec ( Typical )
20 sec ( Maximum )
Recovery time from Stand- by <*5>
3 sec ( Typical )
20 sec ( Maximum )
Command Overhead ( msec )
1
<*1> Under the condition of normal voltage, 25oC normal temperature and bottom side down.
<*2> Average time to seek all possible adjacent track without head switching.
<*3> Weighted average time to travel between all possible combination of track calculated as below.
Weighted average access time = [ Sum of P(n)*t(n) ] / [ Sum of P(n) ], n = 1 to N.
Where, N ; Total number of tracks.
P(n); Total number of seek for stroke n [ = 2*(N - n) ].
t(n);
Average seek time for stroke n.
Average seek time to seek to stroke n is the average time to 1,000 seeks for stroke n, with random head
switch.
switch.
<*4> Average time for 1,000 full stroke seeks with random head switches.
<*5> Typical values are for the condition of normal voltage, 25oC normal temperature and placing bottom
side down. Maximum values are for all conditions specified in this document.
side down. Maximum values are for all conditions specified in this document.