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SPECIFICATIONS –MK2023GAS (HDD2187)
General
Model MK2023GAS (HDD2187)
Interface ATA-2/3/4/5
Motor Fluid Dynamic Bearing (FDB)
Functionality
Formatted Capacity 20.003GB*
Rotational Speed 4200rpm
Avg. Rotational Latency 7.14/ms
Spin-up Time 4sec (typical)
Buffer 2MB
Seek Time (Average) 12
Internal Transfer Rate 164.6 ~ 257.1 Mbits/sec (max)
Host Transfer Rate 100Mbytes/sec
*Toshiba defines a megabyte (MB) as 1,000,000 bytes and a gigabyte (GB) as 1,000,000,000 bytes.
Internal Drive Characteristics
Number of Disks 1
Number of Read/Write Heads 2
Track Density (TPI) 72k
User Data Cylinders 34,040
Logical Cylinders 16,383
Logical Heads 16
Logical Sectors/track 63
Bytes per Sector 512
Logical Blocks (LBA) 39,070,080
Reliability
Preventative maintenance None
Non-recoverable read errors 1 error per 10
13
bits read
Electrical
Voltage 5V 5%
Power Consumption
Start 4.7W typ
Seek 2.6W typ
Read/Write 2.3W typ
Sleep 0.1W typ
Energy Consumption Efficiency 0.035W/GB avg
Shock
Operating 1,960m/s
2
(200G)(2msec)
Non-Operating 7,840m/s
2
(800G)(1msec)