Home News Reviews Forums Shop


Z-CLV....why is it so disliked by many?

DVD-R/W, DVD+R/RW, DVD-RAM

Z-CLV....why is it so disliked by many?

Postby X-Nemesis on Mon Sep 06, 2004 7:39 pm

I see many posters saying how they wish a drive wasn't writing in z-clv mode and wish it were p-cav. Why is this. Does the stoppage between zones in z-clv really cause that many issues in media readability in other commercial and non-writer players?

Like if a user is just gonna be using the writer for backup of information and nothing else...meaning movies or games...is z-clv over p-cav really something to consider?
X-Nemesis
CD-RW Thug
 
Posts: 52
Joined: Wed Apr 24, 2002 9:08 pm

Re: Z-CLV....why is it so disliked by many?

Postby Ian on Mon Sep 06, 2004 8:01 pm

X-Nemesis wrote:I see many posters saying how they wish a drive wasn't writing in z-clv mode and wish it were p-cav. Why is this. Does the stoppage between zones in z-clv really cause that many issues in media readability in other commercial and non-writer players?


No, the overall average writing speed is usually faster with P-CAV or CAV. Not to mention, changing speeds can add a few seconds to the overall writing time.
"Blu-ray is just a bag of hurt." - Steve Jobs
User avatar
Ian
Grand Poobah
 
Posts: 14882
Joined: Sun Apr 08, 2001 2:34 pm
Location: Madison, WI

Postby X-Nemesis on Mon Sep 06, 2004 9:16 pm

Thanks Ian...so as far as the quality of a burn...cav, pcav or zlcv has no real world effect then on the final burn?
X-Nemesis
CD-RW Thug
 
Posts: 52
Joined: Wed Apr 24, 2002 9:08 pm

Postby Ian on Mon Sep 06, 2004 9:32 pm

You really can't generalize writing quality by writing method. I've seen good and bad results from both Z-CLV and P-CAV drives. You're better off asking about a certain drive.
"Blu-ray is just a bag of hurt." - Steve Jobs
User avatar
Ian
Grand Poobah
 
Posts: 14882
Joined: Sun Apr 08, 2001 2:34 pm
Location: Madison, WI

Postby bob11879 on Tue Sep 07, 2004 2:01 pm

PCAV or CAV usually averages faster times. The Plextor 712, for example, is faster at 12x PCAV than the Pioneer is at 16x ZCLV. The reason is the Pioneer doesn't change it's ZCLV from 12x to 16x until 4.1GB into the burn. So it basically is a 12x drive.

CAV-Constantant angular velocity--the motor stays the same speed througout the burn, so the data throughput increases as the circumferance increases.

PCAV-partial CAV--reaches the maximum using CAV and then runs at a constant CLV speed

ZCLV-zoned constant linear velocity. The throughput is constant in zones, then jumps to the next highest zone, i.e., 6x, 8x, 12x 16x.
bob11879
CD-RW Thug
 
Posts: 69
Joined: Fri Sep 19, 2003 6:04 pm

Postby X-Nemesis on Tue Sep 07, 2004 7:33 pm

Thanks for the info Ian and Bob =D>
X-Nemesis
CD-RW Thug
 
Posts: 52
Joined: Wed Apr 24, 2002 9:08 pm

Postby dodecahedron on Wed Sep 08, 2004 8:34 pm

Ahh...this brings up fond memories...of the Great Z-CLV vs. P-CAV Debate of some 1-2 years ago (that was way back then, in the days of CD writers!)
oh...the length discussions...the arguments of which has better writing quality...the flame wars...
ahh...the good old days :D
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
-- JRRT
M.C. Escher - Reptilien
User avatar
dodecahedron
DVD Polygon
 
Posts: 6865
Joined: Sat Mar 09, 2002 12:04 am
Location: Israel

Postby pranav81 on Fri Sep 10, 2004 9:59 am

I still have a old LG GCE-8240B on my old computer.Its more than a couple of years old and I have burned countless discs on it.Never faced any problem with any disc burned on it.Still works beautifully.


::Pranav::
Increasingly mathematics will demand the courage to face its implications.
User avatar
pranav81
CD-RW Player
 
Posts: 1160
Joined: Thu Dec 05, 2002 6:57 am
Location: Solapur,Maharashtra,India

Postby dodecahedron on Fri Sep 10, 2004 12:39 pm

pranav81 wrote:I still have a old LG GCE-8240B on my old computer.Its more than a couple of years old and I have burned countless discs on it.Never faced any problem with any disc burned on it.Still works beautifully.

so does my trusty Plextor PX-W4012TA 40x Z-CLV drive :P
One Ring to rule them all, One Ring to find them,
One Ring to bring them all and in the darkness bind them
In the land of Mordor, where the Shadows lie
-- JRRT
M.C. Escher - Reptilien
User avatar
dodecahedron
DVD Polygon
 
Posts: 6865
Joined: Sat Mar 09, 2002 12:04 am
Location: Israel


Return to DVD Writers

Who is online

Users browsing this forum: No registered users and 0 guests

cron
All Content is Copyright (c) 2001-2017 CDRLabs Inc.