Hard Drive Specifications
NAME Caviar Caviar Caviar Caviar Caviar Caviar Caviar
365 425 540 635 700 850 1080
MODEL NUMBER WDAC1365 WDAC1425 WDAC2540 WDAC2635 WDAC2700 WDAC2850 WDAC31000
FORM FACTOR 3.5-Inch 3.5-Inch 3.5-Inch 3.5-Inch 3.5-Inch 3.5-Inch 3.5-Inch
INTERFACE EIDE EIDE EIDE EIDE EIDE EIDE EIDE
FORMATTED
CAPACITY 365.4 426.8 540.8 639.9 730.8 853.6 1083.8
(MB)
AVERAGE
READSEEK 10 ms 10 ms 10 ms 10 ms 10 ms 10 ms 10 ms
TIME
CACHING Cacheflow3 Cacheflow3 Cacheflow3 Cacheflow3 Cacheflow3 Cacheflow3 Cacheflow3
HOST 5.26 MB/s 5.26 MB/s 5.26 MB/s 5.26 MB/s 5.26 MB/s 5.26 MB/s 5.26 MB/s
(sustained) (sustained) (sustained) (sustained) (sustained) (sustained) (sustained)
TRANSFER 11.1 MB/s (Mode 3 11.1 MB/s (Mode 3 11.1 MB/s (Mode 3 11.1 MB/s (Mode 3 11.1 MB/s (Mode 3 11.1 MB/s (Mode 3 11.1 MB/s (Mode 3
PIO) PIO) PIO) PIO) PIO) PIO) PIO)
RATE (MB/s) 13.3 MB/s (Mode 1 13.3 MB/s (Mode 1 13.3 MB/s (Mode 1 13.3 MB/s (Mode 1 13.3 MB/s (Mode 1 13.3 MB/s (Mode 1 13.3 MB/s (Mode 1
DMA) DMA) DMA) DMA) DMA) DMA) DMA)
BUFFER SIZE
(KB) 64K 64K 64K 64K 64K 64K 64K
ROTATIONAL
SPEED 4500 RPM 4500 RPM 4500 RPM 4500 RPM 4500 RPM 4500 RPM 4495 RPM
DUAL DRIVE
SUPPORT YES YES YES YES YES YES YES
LBA SUPPORT YES YES YES YES YES YES YES
CABLE SELECT
(CSEL) YES YES YES YES YES YES YES
AUTO HEAD
PARK YES YES YES YES YES YES YES
POWER +5 VDC; +12 VDC +5 VDC; +12 VDC +5 VDC; +12 VDC +5 VDC; +12 VDC +5 VDC; +12 VDC +5 VDC; +12 VDC +5 VDC; +12 VDC
4.6W 4.6W 4.6W 4.6W 4.6W 4.6W 4.6W
POWER (READ/WRITE/IDLE); (READ/WRITE/IDLE); (READ/WRITE/IDLE); (READ/WRITE/IDLE); (READ/WRITE/IDLE); (READ/WRITE/IDLE); (READ/WRITE/IDLE);
DISSIPATION 0.5W 0.5W 0.5W 0.5W 0.5W 0.5W 0.5W
(STANDBY/SLEEP); (STANDBY/SLEEP); (STANDBY/SLEEP); (STANDBY/SLEEP); (STANDBY/SLEEP); (STANDBY/SLEEP); (STANDBY/SLEEP);
12.7W (SPINUP) 12.7W (SPINUP) 12.7W (SPINUP) 12.7W (SPINUP) 12.7W (SPINUP) 12.7W (SPINUP) 12.7W (SPINUP)
SHOCK 10G Operating; 10G Operating; 10G Operating; 10G Operating; 10G Operating; 10G Operating; 10G Operating;
150G Non-Operating 150G Non-Operating 150G Non-Operating 150G Non-Operating 150G Non-Operating 150G Non-Operating 70G Non-Operating
Operating: Operating: Operating: Operating: Operating: Operating: Operating:
5-20 HZ, 0.037" 5-20 HZ, 0.037" 5-20 HZ, 0.037" 5-20 HZ, 0.037" 5-20 HZ, 0.037" 5-20 HZ, 0.037" 5-20 HZ, 0.037"
(Double Amplitude) (Double Amplitude) (Double Amplitude) (Double Amplitude) (Double Amplitude) (Double Amplitude) (Double Amplitude)
20-300 HZ, 0.75G 20-300 HZ, 0.75G 20-300 HZ, 0.75G 20-300 HZ, 0.75G 20-300 HZ, 0.75G 20-300 HZ, 0.75G 20-300 HZ, 0.75G
VIBRATION (Peak); (Peak); (Peak); (Peak); (Peak); (Peak); (Peak);
Non-Operating: Non-Operating: Non-Operating: Non-Operating: Non-Operating: Non-Operating: Non-Operating:
5-20 HZ, 0.195" 5-20 HZ, 0.195" 5-20 HZ, 0.195" 5-20 HZ, 0.195" 5-20 HZ, 0.195" 5-20 HZ, 0.195" 5-20 HZ, 0.195"
(Double Amplitude) (Double Amplitude) (Double Amplitude) (Double Amplitude) (Double Amplitude) (Double Amplitude) (Double Amplitude)
20-500 HZ, 4G 20-500 HZ, 4G 20-500 HZ, 4G 20-500 HZ, 4G 20-500 HZ, 4G 20-500 HZ, 4G 20-500 HZ, 4G
(Peak) (Peak) (Peak) (Peak) (Peak) (Peak) (Peak)
LENGTH 5.75 Inches (146 5.75 Inches (146 5.75 Inches (146 5.75 Inches (146 5.75 Inches (146 5.75 Inches (146 5.75 Inches (146
mm) mm) mm) mm) mm) mm) mm)
WIDTH 4.0 Inches (101.6 4.0 Inches (101.6 4.0 Inches (101.6 4.0 Inches (101.6 4.0 Inches (101.6 4.0 Inches (101.6 4.0 Inches (101.6
mm) mm) mm) mm) mm) mm) mm)
WEIGHT 1.0 lb (.453 kg) 1.0 lb (.453 kg) 1.0 lb (.453 kg) 1.0 lb (.453 kg) 1.0 lb (.453 kg) 1.0 lb (.453 kg) 1.25 lb (.567 kg)
MTBF 300,000 300,000 300,000 300,000 300,000 300,000 250,000
WARRANTY 3 Year 3 Year 3 Year 3 Year 3 Year 3 Year 3 Year