User manual HITACHI ULTRASTAR (DFMS) DATASHEET

[. . . ] DFMS3XXX. txt 3 1/2-INCH ULTRASTAR 1, 2, 2. 6, 4 and 5. 2 GB HIGH CAPACITY DISK DRIVES MODELS DFMS-31080, -32160, -32600, -34320 and -35250 ____________________________________________________ AN OEM OFFERING FROM IBM IBM Ultrastar 3. 5-inch disk drives meet the speed and storage requirements demanded by high-end technical and scientific workstations, minicomputers, mainframes, arrays and network servers. [. . . ] To accommodate different system requirements, these drives are available with a SCSI-2 interface in multiple models; 50-pin Fast Single-ended, 68-pin Fast/Wide Single-ended or Differential, and 80-pin Single-ended. Ultrastar 3. 5-inch drives use a sector servo implementation, eliminating the need for dedicated servo surfaces and the repetitive thermal calibration routines that can dramatically impact high-speed data streams in multimedia and video applications. For further levels of data integrity, Predictive Failure Analysis* (PFA) routines monitor the drive at 32 points, correcting soft errors and providing advanced warning of impending drive problems. The application of IBM's proven Magneto-Resistive (MR) head technology and PRDF data channels (PRML with digital filter) produces a simple design with few components and enhanced reliability. This combined with an automated manufacturing process helps the Ultrastar series of drives set a new standard with a projected 1, 000, 000 power-on hours MTBF. Providing a balanced blend of price and performance. Ultrastar drives spin at 5400 RPM and achieve data rates as high as 12. 58 MB/sec, making this family a compelling alternative for data-intensive applications. HIGHLIGHTS 1, 2, 2. 6, 4, 5. 2 GB capacities 5400 RPM 7. 65-12. 58 MB/sec data rate PRDF Channel (PRML with digital filter) Page 1 DFMS3XXX. txt - Predictive Failure Analysis (PFA) MR head technology 512 KB multisegmented data buffer Low command overhead Sector servo Command reordering Back-to-back writes (merged writes) Self-optimizing buffer ratios Read-ahead, write (volatile) and adaptive caching Automatic sector reallocation Automatic power management Built-in error logs 1, 000, 000 hours projected MTBF PRODUCT DESCRIPTION _______________________________________________________________________________ 3 1/2" Ultrastar DFMS-31080/32160/32600/34320/35250 1, 2, 2. 6, 4, 5. 2 GB Disk Drives _______________________________________________________________________________ Configuration Interface SCSI-2 F & F/W Formatted Capacity (512 bytes) 1327/2325/2657/4320/5318 (1) Number of Disks 2/4/2/7/8 Number of Heads 4/8/8/13/16 Areal Density 578 Mb/sq in Maximum Recording Density 133, 000 BPI Maximum Track Density 4352 TPI Tracks Per Surface 4416 Bytes per Sector 256-744 Disk Type Thin Film Channel PRDF (PRML with digital filter) Actuator Type Rotary VCM Head Type Magneto-Resistive (MR) _______________________________________________________________________________ Performance Media Data Rate 7. 65-12. 58 MB/sec Banded Interface Transfer Rate 10. 0 or 20. 0 MB/sec (sync) Maximum Access Times (Pop Avg) Average Read 6. 9/7. 5/7. 5/8. 0/8. 0 ms Average Write 8. 5/9. 0/9. 0/9. 5/9. 5 ms Track to Track Read 0. 5 ms Full Stroke Read 14. 0/15. 0/15. 0/16. 5/16. 5 ms Rotational Speed 5400 RPM Command Overhead (Read) Random <0. 28 ms Sequential w/Read-Ahead <0. 41 ms Buffer Size 512 KB _______________________________________________________________________________ Reliability MTBF 1, 000, 000 Projected power-on hours CDF (2) 3. 0% at 500 poh Recoverable Read Errors <10 in 10E13 Bits Read QPE Enabled Non-Recoverable Read Errors <10 per 10E15 Bits Read Population Average Seek Errors <10 per 10E8 Seeks Predictive Failure Analysis Yes Page 2 DFMS3XXX. txt Buffer Memory Parity Yes _______________________________________________________________________________ Power Requirements Start-up Current 1. 3/1. 3/1. 3/1. 8/1. 8 Watts Idle 5. 6/6. 8/6. 8/8. 5/8. 7 Watts Seek 7. 7/9. 0/9. 0/11. 0/11. 2 Watts _______________________________________________________________________________ Physical Size Height 25. 4/25. 4/25. 4/41. 3/41. 3 mm Width 101. 6 mm Depth 146 mm Weight 0. 46/0. 46/0. 46/0. 82/0. 82 kg Mounting Industry standard, all orientations _______________________________________________________________________________ Environmental Characteristics Operating Non-Operating Temperature 5 to 55 degrees C -40 to 65 degrees C Relative Humidity 5% to 90% 5% to 95% Non-Condensing Shock (2 ms) 10 G 125 G Shock (11 ms) 10 G 70 G Vibration 1G 2G _______________________________________________________________________________ (1) 1 MB=1, 000, 000 Bytes (2) Cumulative Distribution Failure rate. [. . . ] Copywrite International Business Machines Corporation 1994 * Predictive Failure Analysis is a trademark and IBM is a registered trademark of International Business Machines Corporation. Page 3 [. . . ]