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SPECIFICATIONS – MK4018GAS (HDD2170)
General
Model MK4018GAS
(HDD2170)
Interface ATA-2/3/4/5
Motor
Fluid Dynamic bearing (FDB)
Functionality
Formatted Capacity
40.0078GB*
Rotational Speed
4,200rpm
Avg. Rotational Latency
7.14/ms
Spin-up Time
4sec (typical)
Buffer 2MB
Seek Time (Average)
12
Internal Transfer Rate
156.9 ~ 290.4Mbits/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
2
Number of Read/Write Heads
4
Track Density (TPI)
56.8K
User Data Cylinders
33,280
Logical Cylinders
16,383
Logical Heads
16
Logical Sectors/track
63
Bytes per Sector
512
Logical Blocks (LBA)
78,140,160
Reliability
Preventative maintenance
None
Nonrecoverable read errors
1 error per 10
13
bits read
Electrical
Voltage 5V
±5%
Power Consumption
Start 2.7W
typ
Seek 2.6W
typ
Read/Write 2.3W
typ
Sleep 0.1W
typ
Energy Consumption Efficiency
0.078W/GB avg
Shock
Operating
1,862m/s
2
(190G)(2msec)
Non-Operating
7,840m/s
2
(800G)(1msec)
