Are you sure that the wireless connection is capable of 11 MB, isn't it
11Mb?
Sent from my galaxy tab 10.1.
On Jan 8, 2012 10:05 PM, "Les Mikesell" <lesmikes...@gmail.com> wrote:
> On Sun, Jan 8, 2012 at 4:48 AM, John Habermann
> <jhaberm...@cook.qld.gov.au> wrote:
> >
> > You can see that the backup of the /opt share takes nearly the total
> > time of the incremental taking about 8 and half hours to complete while
> > the backup of the /opt rsync share in the full backup takes about 3 and
> > half hours. The full backup is slightly longer than what it takes if I
> > just do a rsync over ssh copy of the file from the client server to the
> > backup server.
> >
> > I have found that rsync seems to always transfer the whole file when
> > copying this file from the client server to the backup server:
> >
> > # rsync -avzh --progress -e ssh
> > administrator@isabella:ExchangeDailyBackup.bkf ExchangeDailyBackup.bkf
> > Password:
> > receiving incremental file list
> > ExchangeDailyBackup.bkf
> > 54.44G 100% 10.66MB/s 1:21:10 (xfer#1, to-check=0/1)4
> >
> > sent 3.31M bytes received 3.27G bytes 486.33K bytes/sec
> > total size is 54.44G speedup is 16.65.
>
> Note that you have used the -z option with native rsync, which
> backuppc doesn't support. You can add the -C option to ssh to get
> compression at that layer when you run rsync over ssh, though.
>
> > My questions for the list are:
> > 1. Is it reasonable for rsync to transfer the whole file when copying a
> > large ntbackup file?
>
> Yes, those files may have little or nothing in common with the
> previous copy. If compression or encryption are used they will
> ensure that no blocks match and even if they aren't, the common blocks
> may be skewed enough that rsync can't match them up.
>
> > 2. Why does an incremental backup of this file take so much longer than
> > a full backup of it or a plain rsync of this file?
>
> That doesn't make sense to me either. Are you sure that is consistent
> and not related to something else that might have been using the link
> concurrently?
>
> --
> Les Mikesell
> lesmikes...@gmail.com
>
>
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Ridiculously easy VDI. With Citrix VDI-in-a-Box, you don't need a complex
infrastructure or vast IT resources to deliver seamless, secure access to
virtual desktops. With this all-in-one solution, easily deploy virtual
desktops for less than the cost of PCs and save 60% on VDI infrastructure
costs. Try it free! http://p.sf.net/sfu/Citrix-VDIinabox
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