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IBM Ultrastar 2XP - 4,55GB USCSI Narrow

Leading drive technology

The Ultrastar 2XP disk drive is optimized for superior performance and capacity, and incorporates the industry's most advanced recording and manufacturing technologies. By combining IBM's leading drive technologies such asMR heads, No-ID (TM) sector formatting and PRDF (PRML with digital filter) channel, the Ultrastar 2XP offers enhanced capacity, performance and reliability, with an areal density of 829 Mbits per square inch. No-ID sector formatting eliminates the overhead caused by the duplicate storage of each data sector's ID field on the disk, and instead uses that space for additional customer data. The unique PRDF data channel produces lower soft error rates and enables higher data throughput.

Performance

The superior performance of the Ultrastar 2XP drives is a result of a combination of several factors. The drives offer a 7200 RPM rotational speed and a data access time under 8.5 ms. Outstanding areal densities, combined with a high-speed channel, provide the Ultrastar 2XP drives with a media data rate of 10.3-15.5 MB/sec. The average sustained data rate of 9.2 MB/sec. is ideal for multimedia and audio visual systems that require higher throughput.

Configuration

Interface          Ultra SCSI Narrow  
Formatted Capacity (512 Bytes) 4550 MB
Number of Disks 5
Number of Heads 9
Areal Density (Maximum) 829 Mbits/sq.in
Recording Density (Maximum) 134,500 BPI
Track Density 6160 TPI
Bytes Per Sector 512-740
Disk Type Thin Film
Channel PRML
Actuator Type Rotary VCM
Head Type    Magneto-Resistive (MR)

                         

Performance

Media Data Rate (Banded) 81.6-123.4 Mbits/sec.
Interface Transfer Rate (Maximum) 20.0-40.0 MB/sec.
Access Times (Pop. avg.)
Average read 7.5/8.5 ms
Track-to-track read 0.5 ms
Rotational Speed       7200 RPM
Latency (Average) 4.17 ms
Buffer Size   512 KB

 

Reliability

Recoverable Read Errors (QPE enabled)  <10 in 10E13 Bits Read
Non-Recoverable Read Errors (Pop. avg.) <10 per 10E15 Bits Read
Seek Errors    <10 per 10E8 Seeks
Predictive Failure Analysis/S.M.A.R.T Yes

   

Physical Size

Height    25.4 mm
Width     101.6 mm
Depth    146 mm
Weight 460 g
Mounting Industry standard, all orientations


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