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IBM DCAS-34330 4.3Gb Ultra wide SCSI 50pin (P/N: 73H7678 - FRU: 83H7070)

The performance characteristics of the DCAS drive family make it ideal for entry server applications and for desktop applications where high performance and capacity are required. DCAS drives are suitable for many AV applications and can be optimised for use in this environment. The drives spin at 5400 rpm, have sector servo, a media data rate of 6.1-9.7MB/sec and have PFA (SMART) and SCAM capability.

Features & Applications:

4.33GB formatted capacity Popular capacity point
Industry standard interface
- 50 pin ANSI SCSI-3
High interface data rates
- 20MB/sec data transfer speed
6.08/9.72 MB/s media data rate
Rotational speed 5400 rpm
High data rate across entire disk surface
Sustained data rate 5.0 - 8.0 MB/s
Average seek time 8.5 ms
Average latency 5.56 ms
Fast access to data
Magneto resistive heads Areal density 1158 Mbit/sq in (Max)
Connection for external activity LED Visibility of Drive Activity
Sector servo No thermal recalibration
448 KB multi-segmented dual port data buffer Fast data retrieval in multi-tasking environments
On-board SCSI bus terminator (50pin models)
SCAM 2 Compliant
Easy integration across multiple platforms
Industry standard mounting Easy installation
Low command overhead
ECC on the fly
Write cache support
Read ahead caching
Improved data throughput

  • High-end desktop
  • Workstations
  • Low/Medium capacity servers and arrays.


Physical characteristics:
Model Number: DCAS-34330
Disks: 3
Physical Heads: 6
Capacity: 4.33 GB
Seek Performance:
Average Seek Read: 8.5 ms
Track-to-Track Seek: 3.2 ms
Full-Stroke Seek: 15.0 ms
Rotational Performance:
Average Latency: 5.56 ms
Rotational Speed: 5400 rpm
Error rate:
Error Correction: Reed-Solomon
Unrecoverable Error Rate: 1 in 1013 bits read
Transfer rates
Disk-to-buffer DTR - sustained 8.1 MB/sec
Buffer-to-host DTR - SE Ultra 1 40 MB/sec
Buffer-to-host DTR - LVD N/A
Power Consumption:
Typical Seek Mode: 4.05 W
Peak Startup Mode: 24.3 W
1.0 × 5.75 × 4.0 inches (H × L × W)
25 × 146 × 102 mm (H × L × W)

Product Contents:
  • Drive Only


  • 30 Day

Availability: Contact us for availability

IBM DCAS-34330 4.3Gb Ultra wide SCSI 50pin (P/N: 73H7678 - FRU: 83H7070)
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