WD Scorpio ML320S-AF2
Specifications
2679-771320-A00
RELEASED 4/7/11 (WD CONFIDENTIAL)
3
2.0
S
PECIFICATIONS
2.1
Performance Specifications
Average Seek
1
- Read
- Write
12.0 ms average
15.0 ms average
Track-to-Track Seek
1
1.5 ms average
Full Stroke Seek
24 ms average
Index Pulse Period
11.1 ms (nominal)
Average Latency
5.5 ms
Rotational Speed
5400 RPM
Data Transfer Rate (maximum)
2
- Buffer to Host
- Max buffer to disk
3.0 Gb/s maximum
116 MB/s maximum
Buffer Size
8 MB
Error Rate - Unrecoverable
<1 in 10
14
bits read
Spindle Start Time
- From Power-on to Drive Ready
3
4.0s average
- From Power-on to Rotational Speed
4
2.0s average
Spindle Stop Time
8s average
Load/Unload Cycles
5
600,000
1
During continuous Seek, Read, or Write commands, an algorithm in the code will add latency as required to keep
the VCM motor from overheating;s seek performance will be impacted under this condition.
2
As used for storage capacity, one megabyte (MB) = one million bytes, one gigabyte (GB) = one billion bytes, and
one terabyte (TB) = one trillion bytes. Total accessible capacity varies depending on operating environment. As
used for buffer or cache, one megabyte (MB) = 1,048,576 bytes. As used for transfer rate or interface, megabyte
per second (MB/s) = one million bytes per second, and gigabit per second (Gb/s) = one billion bits per second.
Effective maximum SATA 3 Gb/s transfer rate calculated according to the Serial ATA specification published by
the SATA-IO organization as of the date of this specification sheet. Visit www.sata-io.org for details.
3
Defined as the time from power-on to the setting of Drive Ready and Seek Complete including calibration.
4
Defined as the time from power-on to when the full spindle rotational speed is reached.
5
Controlled unload at ambient condition.
