Ultrastar XP
Product description |
Models: DFHS-Sxx |
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Features
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- Magneto resistive heads.
- PRML data channel (partial response maximum likelihood with
digital filter).
- Spindle Synchronization.
- User configurable block sizes.
- 512KB multi-segmented dual port data buffer.
- Drive supported SCSI bus terminator power.
- Industry standard mounting.
- Low command overhead.
- Read ahead caching.
- Write cache support.
- ECC on the fly.
- Predictive failure analysis.
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Configuration
Interface SCSI-2/SCSI-3
Formatted device capacity 1.12/2.25/4.51 GB
Sector size 256-744
Data heads 4/8/16
Disks 2/4/8
Areal density (max) 543.9 Mb/sq.in.
Recording density (max) 124.9 KBPI
Track density 4352 TPI
Performance
Rotational speed 7200 RPM
Media transfer rate (avg) 12.07 MB/sec (instantaneous)
Interface transfer rate (max) 20.0 MB/sec
Latency average 4.17 ms
Seek time (typical)
Single cylinder (read) 0.6 ms
Average weighted (read) 7.8/7.8/8.4 ms
Full stroke (read) 16.5 ms
Spin up 8.2/13.2/11.7 sec
Power
Idle 8.2/10.8/15.5 Watts
Seeking 11/13.5/18.3 Watts
+12V VDC start up 1.5/1.5/2.7 Amps
Physical size
Height 25.4 mm (S4 models - 41.3 mm)
Width 101.6 mm
Depth 146.0 mm
Weight 460 g (S4 models - 820 g)
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