IBM IC35L036UWDY10 Hard Drive Specifications - Page 32

Throughput, 5.7.1 Simple sequential access, 5.7.2 Random, access

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4.5.7 Throughput 4.5.7.1 Simple sequential access Operation Sequential read/write Typical (ms) Zone 0

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4.5.7 Throughput
4.5.7.1 Simple sequential access
Zone 0 <290
Zone 11 <560
Zone 0 <260
Zone 14 <510
Sequential read/write
Max (ms)
Typical (ms)
Operation
Figure 15.
Simple sequential access performance (sector size 512 byte case)
The above table gives the time required to read/write for a total of 8000x consecutive blocks
(16,777,216 bytes) accessed by 128 read/write commands. Typical and Max values are given by 100%
and 110% of T respectively throughput the following performance description.
NOTE:
It is asumed that a host system responds instantaneously.
T = A + B + C + 16,777,216/D
where
T = Calculated Time
A = Command Overhead (Cache No Hit)
B = Average Seek Time
C = Average Latency
D = Sustained Disk-Buffer Transfer Rate
4.5.7.2 Random
access
41
38
Random write
37
34
Random read
Maximum (sec)
Typical (sec)
Operation
Figure 16.
Random access performance (sector size 512 bytes case)
The above table gives the time required to execute a total of 1000x read/write commands which access a
random LBA.
T = (A + B + C) * 4096
Where
T = Calculated Time
A = Command Overhead (Cache No Hit)
B = Average Seek Time
C = Average Latency
Ultrastar 146Z10 hard disk drive specifications
16