Don’t judge a book by its cover – why Windows Vista Defrag is cool

O que muda no Defrag do Windows Vista?

Blog do Anderson Thiago — Sun, 28 Jan 2007 18:30:20 GMT

Bem pessoal, já vi em muitos locais usuários que estão utilizando já o Windows Vista, questionarem sobre

re: Don’t judge a book by its cover – why Windows Vista Defrag is cool

archbish99 — Tue, 13 Feb 2007 02:40:40 GMT

A Defrag/VSS question.... I've recently read some articles that under WS2k3, an NTFS volume with a block size of 4K (default) will experience corrupted shadow-copies when defragmenting.

If Defrag runs automatically under Vista/Longhorn, this seems like a serious issue. I'm assuming it's fixed, because I haven't noticed missing shadow copies from my Vista machines which are automatically defragged.... But it'd be nice to have some confirmation. ;-)

re: Don’t judge a book by its cover – why Windows Vista Defrag is cool

cfsbloggers — Wed, 14 Feb 2007 21:57:36 GMT

The block size of 4K will not cause corrupted shadow-copies with defrag.

It does tend to cause extra VSS shadow copies to be made, however. This is the case any time a lot of changes are made on your volume, such as adding or deleting letters from a Word Doc or cells from an Excel Spreadsheet. Defrag simply does a lot more file writing at one time than you do on your own, so it causes more of the copy on writes to happen. This will not corrupt your shadow copies.

There is a limited amount of space on your volume allocated for shadow copies, and once it is full, the oldest shadow copies will be deleted.

So, defrag can cause the deletion of the oldest VSS shadow copies.

Defrag does make an attempt when moving files to move them so that a Copy On Write does not occur to decrease the number of old shadow copies that are deleted. Also, if you have been running Scheduled Defrag weekly the amount of file moving per defrag operation will be less, so the Copy On Writes will be much smaller than for one big defrag of a highly fragmented volume.

Hope this helps.

Victoria

re: Don’t judge a book by its cover – why Windows Vista Defrag is cool

someone — Tue, 06 Mar 2007 11:38:35 GMT

Please, as a user, my highest priority is speed of defrag, not the efficiency. Please make it fast. Also, you can really make it defrag continously in the background, like Diskeeper does or at least make it defrag completely silently in the background while still using the computer.

Utilize com mais flexibilidade o recurso de Desfragmentação no Windows Vista

Blog do Anderson Thiago - Aka Anderson T — Sat, 15 Mar 2008 21:29:11 GMT

Já não é um assunto novo para usuários do Windows Vista, falar sobre o Defrag. Porém, o que mais se encontra