User Manual

Seagate FireCuda Product Manual, Rev. H 9
Drive Specifications
2.2 Physical organization
2.3 Recording and Interface Technology
2.4 Physical Characteristics
2.5 Seek time
Seek measurements are taken with nominal power at 25°C ambient temperature. All times are measured using drive diagnostics. The specifications
in the table below are defined as follows:
• Track-to-track seek time is an average of all possible single-track seeks in both directions.
• Average seek time is a true statistical random average of at least 5000 measurements of seeks between random tracks, less overhead.
Drive model Read/write heads Number of discs
ST2000LX001 4 2
ST1000LX015 2 1
ST500LX025 2 1
Interface SATA 6Gb/s
Recording method Perpendicular
Recording density 2276 Kb/in
Track density 580 ktracks/in avg
Areal density 1320 Gb/in
2
avg
Spindle speed 5400 RPM
Data transfer rate (up to) 140 MB/s
Height (mm/in) 7.0 (± 0.2) / 0.276 (± 008)
Width (mm/in) 69.85 (± 0.25) / 2.750 (± 0.010)
Length (mm/in) 100.35 (+0.20/-0.25) / 3.951 (+0.008/-0.010)
Typical weight (g/lb)
(2-Disk models)
96 / 0.212
Typical weight (g/lb)
(1-Disk models)
92/ 0.203
Cache buffer 128MB
Table 2 Typical seek times
Typical seek times (ms) Read
Track-to-track 1.5
Average 13.0
Average latency 5.6
Note
These drives are designed to consistently meet the seek times represented in this manual. Physical
seeks, regardless of mode (such as track-to-track and average), are expected to meet the noted values.
However, due to the manner in which these drives are formatted, benchmark tests that include
command overhead or measure logical seeks may produce results that vary from these specifications.