Specifications
Part number 5502645

Configuration
Interface Ultra320 / Ultra160 SCSI
Capacity (GB) 18.3
Sector size (bytes) 512-528 (variable, 2 byte inc.)
Recording zones 15
Data heads (physical) 12/6/3/2
Data disks 6/3/2/1
Max. areal density (Mbits/sq. inch) 26,263
Max. recording density (BPI) 548,000
Track density (TPI) 47,900
Performance
Data buffer 8192 KB
Rotational speed (rpm) 10,000
Latency average (ms) 3.00
Media transfer rate (max. Mbits/sec) 433 - 825
Interface transfer rate (max. MB/sec) 320
Sustained data rate (MB/sec) 33.8 - 66.7
Seek time (read, typical)
Average (ms) 4.7
Track to track (ms) 0.5
Full track (ms) 10.5
Reliability
Error rate (non-recoverable) 10 in 10E16 bits read
Start/stops (at 40° C) 50K
Acoustic
Idle - Typical (Bels) 3.7/3.4/3.4/3.4
Operating - Typical (Bels) 4.5/4.5/4.5/4.5
Power
Requirement +5VDC (+-5%), +12 VDC (+-5%)
Dissipation
   Startup current (max. peak) 1.07A (5V), 2.40A (12V)
   Idle (W) 10.2/7.7/7.0/5.9
Power consumption efficiency index 0.07 W/GB , 0.11 W/GB
0.19 W/GB , 0.33 W/GB
Dimensions
Height (mm) 25.4 (+-0.4)
Width (mm) 101.6 (+-0.4)
Depth (mm) 146 (+-0.6)
Weight (max. kg) 0.78
Environmental characteristics
Operating
Ambient temperature 5° to 55° C
Relative humidity (non-condensing) 8% to 90%
Max. wet bulb (non-condensing) 29.4° C
Shock (half sine wave) 10G (11 ms) / 45G (2 ms)
Random Vibration (RMS) 0.67G for horizontal
0.56G for vertical
Non-operating
Ambient temperature -40° to 65° C
Relative humidity (non-condensing) 5% to 95%
Max. wet bulb (non-condensing) 35° C
Shock (half sine wave) 75G (11 ms) / 225G (2 ms) for 146GB
300G (2 ms) for 73, 36, and 18GB
Random Vibration (RMS) 1.04G