Asus CRW-4816A Partial CAV vs. Zone CLV, Partial Constant Angular Velocity (P-CAV)Recording Technology, P-CAV, Z-CLV

Partial Constant Angular Velocity (P-CAV) Recording Technology

The Partial Constant Angular Velocity (P-CAV) recording method is a combination of the Constant Angular Velocity (CAV) and Constant Linear Velocity (CLV) recording technologies. In CAV recording technology, the drive maintains a consistent rotation speed which will result in a variable transfer rate, while in CLV recording technology, the data transfer rate is kept at a fixed level by changing the rotation speed.

P-CAV recording technology switches from CAV to CLV once the maximum transfer rate is reached. Unlike Zone Constant Linear Velocity (Z-CLV) recording, no links are produced in the P-CAV recording process, resulting in a higher average transfer rate.

The following illustration compares the Partial Constant Angular Velocity (P-CAV) and Zone Constant Linear Velocity (Z-CLV) recording technologies.

Partial CAV vs. Zone CLV

P-CAV

Speed 48x

40x

32x

24x

20x

16x

8x

0x			Time
	Z-CLV
LEGEND: P-CAV
		Z-CLV

ASUS CRW-4816A User’s Manual 13