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MHT Series Catalog

Catalog | Jumper | CMOS

mht2xxx


FEATURES

  • Large capacity: Massive capacity has been achieved through the use of a GDT (Glass Direct Texture) Media *1 allowing up to 10.7Gb/cm2 (69.3Gb/in 2) high density and up to 40GB*2 per disk, 80GB*2 per drive (2 disks) high capacity.
  • Improvement for Shock Tolerance: FDB (Fluid Dynamic Bearing) spindle motor *3 and Head Load/Unload mechanism *4 enable in high shock tolerance. The drives withstand up to 900Go-p (duration 1ms) non-operating shock and up to 225Go-p (duration 2ms) operating shock.
  • Improvement for Silence: FDB spindle motor and the improvement of seek control *5 are incorporated for silent operation.
  • Reduction of Power Consumption: Power consumption under the read/write operation is reduced about 10% by New LSI technology.
  • High Performance: Read Ahead Cache *6 and Write Reordering Cache *7 enable the drives to execute read and write operation in high speed.
  • High Reliability: 320bit length ECC (Error Correction Code) and S.M.A.R.T *8 function enable the drives to improve the data reliability.


Notes:

*1: A new type of media incorporating a new glass disk texturing process which dramatically increases the electromagnetic conversion properties in achieving greater areal density.

*2: Fujitsu defines 1 gigabyte (GB) as 1,000,000,000 bytes for Hard Disk Drives' storage capacity size.

*3: The spindle motor which use the oil for the rotational bearing to rotate the disk.

*4: The mechanism to unload the heads to outside of media to eliminate the interference between heads and media.

*5: The data head moving operation for radius direction of the disk.

*6: The read ahead reading function for the consecutive data read command.

*7: The function for reducing the operational time by managing the order of multiple write commands.

*8: The function for monitoring the operation in HDD and forecasting the failure.


FUNCTIONAL SPECIFICATIONS


MHT2020AT MHT2030AT MHT2040AT MHT2060AT MHT2080AT
Storage capacity Formatted *1 20.0GB 30.0GB 40.0GB 60.0GB 80.0GB
Sector length 512 Bytes
Rotational speed 4,200min-1 {4,200 rpm}
Average Rotational Waiting Time 7.14 ms (typical)
Seek time Minimum 1.5ms (typical)
Average 12ms (typical)
Maximum 22ms (typical)
Dimensions (W x D x H) 70mm x 100mm x 9.5mm
Weight less than 99g
Data Transfer rate 100 MB/s maximum
Mean Time between Failure 300,000 hours
Service Life 5 years or 20,000 power on hours
Acoustic Noise 2.3 bels (typical) at idle


Notes:

*1: Fujitsu defines 1 gigabyte (GB) as 1,000,000,000 bytes for Hard Disk Drives' storage capacity size.

POWER SPECIFICATIONS


MHT2020AT MHT2030AT MHT2040AT MHT2060AT MHT2080AT
Power requirements 5V ± 5%
Power Consumption Read/Write*1 Read 2.0W typical / Write 2.1W typical
Idle 0.65W typical
Standby 0.25W typical
Sleep 0.10W typical
Energy Efficiency*2 0.022 W/GB
(rank D)
0.022 W/GB
(rank D)
0.011 W/GB
(rank E)
0.011 W/GB
(rank E)
0.008 W/GB
(rank E)


Notes:

1: Current and power level when the operation (command) that accompanies a transfer of 63 sectors is executed 3 times in 100 ms.

2: Energy efficiency based on the Law Concerning the Rational Use of Energy indicates the value obtained by dividing power consumption by the storage capacity. (Japan only)

ENVIRONMENTAL SPECIFICATIONS


MHT2020AT MHT2030AT MHT2040AT MHT2060AT MHT2080AT
Ambient temperature Operating 5°C to 55°C (ambient)
5°C to 60°C (disk enclosure surface)
Non-operating -40°C to 65°C
Gradient 20°C /h or less
Relative humidity Operating 8% to 90% RH (non condensing)
Non-operating 5% to 95% RH (non condensing)
Maximum wet bulb 29°C (Op.)/ 40°C (Non-Op.)
Vibration Operating 9.8m/s 2 {1.0G}
Non-operating 49m/s 2 {5.0G}
Shock Operating 2,207m/s 2 {225G}
Non-operating 8,820m/s 2 {900G}