Just to add another/different option.

I had a good 760G 2.5" hard drive left over when I upgraded my laptop to 
SSD.  For less $20 I bought a USB3 case for it.  It runs at aboutt SATA 
speeds and needs no other power.
While bigger than a USB stick it's still small enough for my backpack.

Joe

On 07/11/2014 10:44 PM, Steven Haigh wrote:
> On 12/07/2014 3:24 PM, ToddAndMargo wrote:
>> On 07/11/2014 01:49 PM, Patrick J. LoPresti wrote:
>>> On Fri, Jul 11, 2014 at 1:40 PM, Patrick J. LoPresti
>>> <[log in to unmask]> wrote:
>>>> Try giving the "--size-only" option to rsync.
>>> Better yet, try "--modify-window=1". From the rsync man page:
>>>
>>> --modify-window
>>>                 When  comparing  two  timestamps, rsync treats the
>>> timestamps as
>>>                 being equal if they differ by no  more  than  the
>>> modify-window
>>>                 value.   This  is  normally  0 (for an exact match),
>>> but you may
>>>                 find it useful to set this to a larger value in some
>>> situations.
>>>                 In  particular,  when  transferring to or from an MS
>>> Windows FAT
>>>                 filesystem (which represents times with a 2-second
>>> resolution),
>>>                 --modify-window=1 is useful (allowing times to differ
>>> by up to 1
>>>                 second).
>>>
>>>
>>>    - Pat
>>>
>> Hi Pat,
>>
>> --modify-window=1
>>        3 hr - 9 sec
>>
>> --modify-window=10
>>        3 hr - 8 sec
>>
>> Rat!  I really though this sounded right
>>
>>
>> I did notice that the bugger the file (with no changes)
>> the longer it took.  So, I think they are still doing
>> check sums.
>>
>> Any way to turn of the check sum testing?
> Now you're starting to get off task... How can you sync something if you
> don't know if it matches? Sure, you can only go off timestamps - but
> what then? It leaves you with a situation where you may get files that
> are different and you'll never know.
>
> You'd be much better off getting a better flash drive (ie not add hack
> upon hack that may not help) and fixing the root cause of the problem.
>
> Hell, get a small laptop HDD and put it in a USB caddy case. Get a small
> SSD (they're cheap!) and put that in a case...
>