On 12/11/2007 12:37 PM, "Ed Pastore" <email@hidden> wrote:
TM does FileVault backups like it does as otherwise your TM disk
would be a nice, unencrypted, history of all your data.
I understand why it uses an encrypted image. What I don't get is why
it cannot read or write from/to that image when I am logged in. I can
access that image from the Finder... I would think TM could acquire
my privileges and access it as well.
My guess is that while they are open encrypted disk images are not
in a consistent state. Things probably go through a couple of
caches, and there are constant writes to the disk image. Since it is
all one file TimeMachine would have to try and backup the very large
image each time (so that would eat disproportionally into your
space), and would probably have trouble completing the read before
something else tried to write into the space (causing a bit of a
nightmare).
In 10.5 FV images are sparsebundles, not plain sparse. This means that
each band of the image is a separate file and it should help speed up
the TM backups.
This is complicated enough that I don't fault Apple for not having
it in 1.0.
Exactly.
Josh
--
Josh Wisenbaker
U, U, D, D, L, R, L, R, B, A, Start for your server
http://www.afp548.com
