Gateway 20-GB Per Platter Hard Disk Drive - 5501639

Manufacturer		IBM
Model		DJSA-220
Configuration
Capacity (GB)		20
Sector size		512 bytes
Recording zones		12
User cylinders		16 383
Data heads		4
Disks		2
Performance
Data buffer (KB)		512?
Rotational speed (RPM)		4 200
Latency (average ms)		7.1
Media transfer rate (Mbps)		85.5 to 161.6
Interface transfer rate (MBps)		66.6 Ultra-DMA mode 4 16.6 PIO mode 4
Seek time (ms)
Average typical		12.0
Read (typical)		12
Write (typical)		13
Reliability
Error rate (nonrecoverable)		<1 per 1.0E13 bits transferred
Load/unload cycles		300 000
Power
Voltage requirement (VDC)		+5 (±5 %)
Dissipation (W)
Startup (maximum peak)		066
Seek average		2.3
Read average		2.0
Write average		2.2
Performance idle average		1.85
Active idle average		0.85
Low power idle average		0.34
Standby typical		0.05
Sleep typical		0.02
Power consumption efficiency (watts per MB)		0.03
Physical size
Height (mm)		9.5
Width (mm nominal)		69.85
Depth (mm nominal)		100.2
Weight (g)		99
Environmental characteristics	Operating		Non-operating
Ambient temperature	5 to 55°C		–40 to 65°C
Relative humidity noncondensing)	8 to 90%		5 to 95%
Maximum wet bulb (non-condensing)	29.4° C		40.0° C
Shock (half sine wave)	175 G/ 2 ms		700 G/ 1 ms
Vibration
Random (RMS)	0.67 G (5-500 Hz)		3.01 G (2.5-500 Hz)
Swept swine	1 G 0-peak (5-500 Hz)		5 G 0-peak (10-500 Hz)