Computers R us

When it comes to capacity, performance, and reliability, one name stands above the rest - the IBM Ultrastar family of high-performance disk drives, designed specifically to meet the needs of your advanced, data-intensive applications. The recently expanded family of IBM Ultrastar hard disk drives provides users with a wide range of storage solutions for nearly every data-intensive application.

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.

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.

Interface	Ultra SCSI Narrow
Formatted Capacity (512 Bytes)	9100 MB
Number of Disks	9
Number of Heads	18
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)

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

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

Height	41.3 mm
Width	101.6 mm
Depth	146 mm
Weight	850 g
Mounting	Industry standard, all orientations