[OSX-Users] Re: Time Machine tip

[Jules Field]

The thing that worried me was the hostname in the prompt: cjg-vpn. Are 
you actually using a VPN connection at the moment? Or is that just a 
prompt left over from when you did from home?

On 29/06/2015 16:15, Tim Chown wrote:
> As Jules implies, if you had a wired connection you should shift that 
> volume over a 1Gbit/s link in 1-2 hours, typically.  I suspect your 
> estimate may have been based on the wifi performance.
>
> If you’re going through one router and no firewalls, then 50Mbit/s 
> (20GB over an hour) seems very slow for GigE. Though I don’t know how 
> Time Machine does its thing - maybe much of the time is taken by its 
> processes, not the network?
>
> Might be worth asking Seb to look at the network monitoring to see if 
> anything’s up.
>
> Tim
>
>> On 29 Jun 2015, at 16:06, Christopher Gutteridge <cjg at ecs.soton.ac.uk 
>> <mailto:cjg at ecs.soton.ac.uk>> wrote:
>>
>> traceroute to mactardis.ecs.soton.ac.uk 
>> <http://mactardis.ecs.soton.ac.uk> (152.78.68.161), 64 hops max, 52 
>> byte packets
>>  1  sys2010-router.core.ecs.soton.ac.uk (152.78.69.126) 0.779 ms  
>> 0.352 ms  0.309 ms
>>  2  mactardis (152.78.68.161)  0.570 ms  0.349 ms  0.331 ms
>> cjg-vpn:DrupalPush cjg$
>>
>> But remember that's with me using the machine too.
>>
>> None the less, the basic approach of cutting the initial backup into 
>> chewable portions has entirely solved my problem, as a workaround, 
>> and may well be of use to others in future.
>>
>> On 29/06/2015 15:43, Jules Field wrote:
>>> Where are you based?
>>> And what does "traceroute mactardis.ecs.soton.ac.uk 
>>> <http://mactardis.ecs.soton.ac.uk>" produce as output?
>>> 150GB in, say, 13 hours = roughly 27 - 30 Mbits/sec.
>>> Sounds on the slow side.
>>>
>>> Please don't omit any top-level directories once you have a complete 
>>> backup. It's a *lot* quicker to recover from a complete backup. So 
>>> *do* include all your Applications and such like.
>>>
>>> On 29/06/2015 15:26, Christopher Gutteridge wrote:
>>>> I was using wifi the first time, and Jules asked me not to do that 
>>>> again :)
>>>>
>>>> Wifi/wired actually didn't make much difference. My disk is full 
>>>> past the 200Gb mark, although it's easy to exclude some obvious 
>>>> junk it's still 150Gb and that estimated it was going to take >12hours!
>>>>
>>>> Right now I'm adding another 20Gb incrementally to my first backup 
>>>> and that's just estimating it'll take around an hour which is a 
>>>> time span I can commit to :)
>>>>
>>>> On 29/06/2015 15:23, Tim Chown wrote:
>>>>> Were you using WiFi?  If so, maybe use Ethernet / a wired docking 
>>>>> point for the Big One?
>>>>>
>>>>> Tim
>>>>>
>>>>>> On 29 Jun 2015, at 15:20, Christopher Gutteridge 
>>>>>> <cjg at ecs.soton.ac.uk <mailto:cjg at ecs.soton.ac.uk>> wrote:
>>>>>>
>>>>>> I've been trying to get up and running using time machine to back 
>>>>>> up my mac, but the time to do the initial 200Gig means that I 
>>>>>> would have to leave my laptop in one place for a very long time 
>>>>>> which is very inconvenient.
>>>>>>
>>>>>> What seems to be working better is to exclude all the big 
>>>>>> directories, and do an initial backup, then add in a few more to 
>>>>>> the backup each time. Un-excluding higher directories on the 
>>>>>> later iterations, (eg /Users/cjg ) but still excluding 
>>>>>> (/Users/cjg/music)
>>>>>>
>>>>>> -- 
>>>>>> Christopher Gutteridge -- http://users.ecs.soton.ac.uk/cjg
>>>>>>
>>>>>> University of Southampton Open Data Service: 
>>>>>> http://data.southampton.ac.uk/
>>>>>> You should read the ECS Web Team blog: 
>>>>>> http://blogs.ecs.soton.ac.uk/webteam/
>>>>>>
>>>>>
>>>>
>>>> -- 
>>>> Christopher Gutteridge --http://users.ecs.soton.ac.uk/cjg
>>>>
>>>> University of Southampton Open Data Service:http://data.southampton.ac.uk/
>>>> You should read the ECS Web Team blog:http://blogs.ecs.soton.ac.uk/webteam/
>>>>
>>>
>>> Jules
>>>
>>> -- 
>>> Jules Field MEng MBCS CITP CEng
>>> email+iMessage:Jules at ecs.soton.ac.uk
>>> Twitter: @JulesFM
>>>
>>> Senior Tutor, Postmaster
>>> Electronics and Computer Science
>>> University of Southampton SO17 1BJ, UK
>>>
>>> 'Think globally, act locally.' - Friends of the Earth
>>>
>>
>> -- 
>> Christopher Gutteridge --http://users.ecs.soton.ac.uk/cjg
>>
>> University of Southampton Open Data Service:http://data.southampton.ac.uk/
>> You should read the ECS Web Team blog:http://blogs.ecs.soton.ac.uk/webteam/
>>
>

Jules

-- 
Jules Field MEng MBCS CITP CEng
email+iMessage: Jules at ecs.soton.ac.uk
Twitter: @JulesFM

Senior Tutor, Postmaster
Electronics and Computer Science
University of Southampton SO17 1BJ, UK

'Think globally, act locally.' - Friends of the Earth

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