This IS the Avid L2: Re: [Avid-L2] Re: does FreeFileSync verification really do much?

Hi Wilson - thanks for chiming in. If I remember right, you said you were using it on PC, rather than Mac, yes?

Would you think that the numbers I'm getting (verification taking 13% longer, instead of twice as long) is a likely indication of something being wonky with the Mac implementation?

Cheers,
--Michael

On 2014-09-09, 10:26 AM, Wilson Chao wilsonchao@gmail.com [Avid-L2] wrote:

I usually wait for others to chime in, but since nobody's biting. . .

I use FreeFileSync on my Avids and on my work and home machines. By default it copies, then does a checksum verify, which takes roughly as long as the copy, so yeah, that's twice as long. Of course you don't have to wait for the verify; you can just abort it and use the copies right away. Any time later you can verify the copies against the originals if you wish.

In general it's useful and reliable; I've had no problems with it.

On Tue, Sep 9, 2014 at 12:45 PM, Michael Brockington mbrock321@gmail.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

I didn't see any responses to this, but I sent it late on a Friday, so
thought I'd bump the thread...

On 2014-09-04, 11:27 PM, Michael Brockington wrote:
> I've been giving "Free File Sync" a whirl after reading about it on
> this list a couple months back. I'm on OSX 10.9.2
>
> I notice that file verification is not enabled by default. You have
> to dig into 'expert' settings in the XML settings file that resides in
> ~/Library/Application Support/FreeFileSync in order to turn it on.
>
> When turned on, FFSync does produce messages in it's log indicating
> each file copy has been verified, but the time taken for verification
> is very short, which doesn't give me much confidence that the
> verification is reliable.
>
> I was using a test folder of about 7.5 GB of files.
>
> FFS - with no verification - took 1:01 (1 minute, 1 second)
> FFS - with verification - took 1:13 (so only about 13% longer)
>
> rsync (which does a real checksum) - 3:10
> CCC (which uses rsync under the hood, so again doing a real
> checksum) - 3:17
>
> As another point of comparison, I know ShotPut Pro takes about
> twice as long to back up footage when MD5 Checksums are turned on.
>
> FFS takes so little time for its verification both in percentage
> terms, and in comparison to other backup programs, it makes me wonder
> whether it is really doing a useful check.
>
> Curious to hear what others might think.
>
> Cheers,
> --Michael