4
SPECIFICATIONS – MK2004GAL (HDD1422) HARD DISK DRIVE
General
Model MK2004GAL
(HDD1422)
Interface ATA-2/3/4/5
Functionality
Formatted Capacity
20.0GB*
Rotational Speed
4200rpm
Avg. Rotational Latency
7.14/ms
Spin-up Time
3.5sec (typical)
Buffer 2Mbytes
Seek Time
Average
Maximum
15
26
Internal Transfer Rate
125.5 ~ 253.1 Mbits/sec (max)
Host Transfer Rate
Ultra
DMA
mode
PIO
Mode
100Mbytes/sec
16.6Mbytes/sec
Interleave Factor
1:1
*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 Data Heads
2
Track Density (TPI)
3,465 (88.0k)
Logical Cylinders
16,383
Logical Heads
16
Logical Sectors/track
63
Bytes per Sector
512
Logical Blocks (LBA)
39,063,024
Reliability
Preventative maintenance
None
Non-recoverable read errors
1 error per 10
13
bits read
Electrical
Voltage 3.3V
5%
Power Consumption
Start 1.2W
typ
Seek
1.4W typ
Read/Write
1.4W typ
Sleep
0.08W typ
Energy Consumption Efficiency
0.02W/GB avg
Shock
Operating
2,450m/s
2
(250G)(2msec)
Non-Operating
9,800m/s
2
(1000G)(1msec)
