Go Back   AnandTech Forums > Hardware and Technology > General Hardware

· Hardware and Technology
· CPUs and Overclocking
· Motherboards
· Video Cards and Graphics
· AMD Video Cards
· Nvidia
· Displays
· Memory and Storage
· Power Supplies
· Cases & Cooling
· SFF, Notebooks, Pre-Built/Barebones PCs
· Networking
· Peripherals
· General Hardware
· Highly Technical
· Computer Help
· Home Theater PCs
· Consumer Electronics
· Digital and Video Cameras
· Mobile Devices & Gadgets
· Audio/Video & Home Theater
· Software
· Software for Windows
· All Things Apple
· *nix Software
· Operating Systems
· Programming
· PC Gaming
· Console Gaming
· Distributed Computing
· Security
· Social
· Off Topic
· Politics and News
· Discussion Club
· Love and Relationships
· The Garage
· Health and Fitness
· Home and Garden
· Merchandise and Shopping
· For Sale/Trade
· Hot Deals with Free Stuff/Contests
· Black Friday 2015
· Forum Issues
· Technical Forum Issues
· Personal Forum Issues
· Suggestion Box
· Moderator Resources
· Moderator Discussions

Thread Tools
Old 12-12-2000, 06:05 AM   #1
Join Date: Sep 2000
Posts: 9,061

Like the post, does a hard drive begin on the outside of a platter and right in, or on the inside of a platter and write out? It would be outside in right, because C drive will be the fastest, followed by D, E and the others? Am I right? Am I stoopid? Jeezle man, I just dunno anymore! Its all so damned confusing!!!
Shockwave is offline   Reply With Quote
Old 12-12-2000, 07:41 AM   #2
Lord Evermore
Diamond Member
Join Date: Oct 1999
Posts: 9,558

Hard drive's start on the outer track of the platters and write their way in, yes. Although it's not just a straight run across all the platters simultaneously. I think Maxtor or Quantum have a neat little explanation of how data is written across the platters.

The outside edge of the platter is faster than the inside, and since the density is the same across the disk, this means the outside edge passes more data across the heads in less time, which means the outside edge can stream data faster. So if you have multiple partitions, the one on the outside will be the fastest, and they get slower as you move inward.

CDROM's read from the inside to the outside. The older kind of drive used CLV, constant linear velocity, which meant the same amount of data passed the read laser all the time, so you had a drive that was the same speed across the disc (it would slow down the spinrate when it got to the outer half of the disc in order to keep the data rate the same). Newer drives use constant angular velocity (CAV) or a combination, so that it always turns at the same rate. So when the read laser reaches the outer part of the disc, the data is running past it at a faster rate than the inside of the disc (same density, but the outside of a circular spin goes faster than the inside), so you get higher speeds on the outside of a CD than the inside. That's why you have '32X MAX' drives. They spin at a constant spinrate, say 200RPM's (random number). On the inside edge, that makes it maybe a 12X data rate. As it moves outward, the datarate increases slowly, so halfway across the disc you're at maybe 24X, and at the very edge you're at 32X. However most CD's aren't full, so it's rare that you ever reach the 32X portion. More often you get far less than the max rate.
neochat has fallen...

Tokio Hotel!
Tokio Hotel MySpace

Rule 1 for posting: make your thread title actually mention the topic of the post.
Lord Evermore is offline   Reply With Quote

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

All times are GMT -5. The time now is 01:04 AM.

Powered by vBulletin® Version 3.8.8 Alpha 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.