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2.5 inch ATA-5 hard disk drives
Capacities: 20, 30, 40 & 60 GB
Hitachi Travelstar DK23EA / DK23EB
hard disk drives
Highlights
20, 30, 40 or 60 GB 4200 RPM in 9.5mm high package for
maximum capacity slimline portable applications
40GB 5400 RPM in 9.5mm high package for applications
that require increased performance
250G/2ms operating shock
ATA-5 interface with 2048kB read/write cache
Ultra DMA mode 5 (100 MB/s max.) supported
GMR head and MEEPRML read channel technology
32-bit RISC microprocessor, Shock sensor, SMART
Use of Fluid Dynamic Bearing Motor to improve Acoustic
and shock characteristics
Hitachi Travelstar DK23EA specifications
Product Hitachi Travelstar DK23EA series
Model Travelstar DK23EA-60 Travelstar DK23EA-40 Travelstar DK23EA-30
Performance Hitachi Global Storage Technologies
Total Capacity
Formatted 60.011 GB 40.007 GB 30.005 GB
Per Sector 512 512 512
Number of Cylinders 42,091 42,091 42,091
Number of Disks 2 2 1
Number of Heads 4 3 2
Seek Time (Nominal)
1 Track 3ms 3ms 3ms
Average 13ms 13ms 13ms
Full Track 24ms 24ms 24ms
Average Latency 71ms
. 71ms
. 71ms
.
Rotational Speed 4,200 RPM 4,200 RPM 4,200 RPM
Read Technology ME2PRML, ID-Less Format
Internal Transfer Rate 22.