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From: nospam on 21 Apr 2010 20:33
In article
<nospam.m-m-52E455.20264421042010(a)cpe-76-190-186-198.neo.res.rr.com>,
M-M <nospam.m-m(a)ny.more> wrote:

> > > Since the win volume changes each time you open it, TM will recopy the
> > > entire 20 or 40 GB to each consecutive backup. That would fill almost
> > > any TM disk quickly.
> >
> > that's why it's a really good idea to make a snapshot.
>
> What good is a snapshot if your hard disk crashes?

how did you read that from what i said?

by taking a snapshot, the entire 20 gig or whatever won't be backed up,
only the changed parts after the snapshot, and that's going to be
significantly smaller.
From: dorayme on 21 Apr 2010 21:01
In article
<nospam.m-m-0AEEAA.19364821042010(a)cpe-76-190-186-198.neo.res.rr.c
om>,
M-M <nospam.m-m(a)ny.more> wrote:

> In article <dorayme-CCC52E.02080022042010(a)news.albasani.net>,
> dorayme <dorayme(a)optusnet.com.au> wrote:
>
> > Why is this, you mentioned 20GB being too small for your win
> > needs. OK, let's double it. Why would 40 make such a big
> > difference that the TM disk fills up "very quickly"?
>
>
> First, I use a separate partition for my Win disk so TM has nothing to
> do with it.
>
> TM comes into play only if you don't partition.
>
> Since the win volume changes each time you open it, TM will recopy the
> entire 20 or 40 GB to each consecutive backup. That would fill almost
> any TM disk quickly.

Can we settle on one option? If there is no partition (or only
one on which everything including parallels and the win stuff is
on) why will TM not just note the changes made and write *just
those*. Does win data all change like a frog to a princess to
something yet different every time it is used (differently to the
way the Mac stuff)? Why does the win stuff change so much that
the changes themselves are so overwhelming?

--
dorayme
From: nospam on 21 Apr 2010 21:10
In article <dorayme-229193.11012422042010(a)news.albasani.net>, dorayme
<dorayme(a)optusnet.com.au> wrote:

> Can we settle on one option? If there is no partition (or only
> one on which everything including parallels and the win stuff is
> on) why will TM not just note the changes made and write *just
> those*. Does win data all change like a frog to a princess to
> something yet different every time it is used (differently to the
> way the Mac stuff)? Why does the win stuff change so much that
> the changes themselves are so overwhelming?

any change in a file causes time machine to copy the entire file.

with parallels and vmware, that can be big. the images are banded
files, but more than one band is usually affected.
From: nospam on 21 Apr 2010 21:31
In article
<nospam.m-m-A8C4FE.21145221042010(a)cpe-76-190-186-198.neo.res.rr.com>,
M-M <nospam.m-m(a)ny.more> wrote:

> > by taking a snapshot, the entire 20 gig or whatever won't be backed up,
> > only the changed parts after the snapshot, and that's going to be
> > significantly smaller.
>
> Maybe I don't understand. Isn't a snapshot something you do in Windows?

i'm referring to snapshots within vmware and parallels which saves the
current state of the hard drive so you can go back to it, effectively
undoing everything you did after the snapshot was taken.

once a snapshot is taken, the bulk of the guest image won't change,
making backups faster and any incremental backups of it will take up
less space on the backup drive.

<http://www.vmware.com/files/images/screens_fusion/f2/safety_snapshots_u
ipanel_lg.jpg>
From: dorayme on 21 Apr 2010 22:04
In article
<nospam.m-m-A681D1.21175421042010(a)cpe-76-190-186-198.neo.res.rr.c
om>,
M-M <nospam.m-m(a)ny.more> wrote:

> In article <dorayme-229193.11012422042010(a)news.albasani.net>,
> dorayme <dorayme(a)optusnet.com.au> wrote:
>
> > Can we settle on one option? If there is no partition (or only
> > one on which everything including parallels and the win stuff is
> > on) why will TM not just note the changes made and write *just
> > those*. Does win data all change like a frog to a princess to
> > something yet different every time it is used (differently to the
> > way the Mac stuff)? Why does the win stuff change so much that
> > the changes themselves are so overwhelming?
>
>
> My understanding is that if your win volume is not on a partition, then
> it is seen as a single file, a virtual disk, by TM.

Ah... ok... now I am seeing what you are saying. I suppose the
odds are that SuperDuper would rewrite the whole thing every time
too (but no chance of rapidly filling up the disk as with TM. Not
a bad further reason not to use this over kill TM software imwo)

--
dorayme
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