Toshiba MK4006GAH User Manual download pdf (Page 16)

Toshiba Corporation Digital Media Network Company

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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, 25

C 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.

<*4> Average time for 1,000 full stroke seeks with random head switches.

<*5> Typical values are for the condition of normal voltage, 25

C normal temperature and placing bottom

side down. Maximum values are for all conditions specified in this document.

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Toshiba MK4006GAH User Manual Page 16