iMac 12,2 (mid 2011) airport (wireless) problem

[Sodner]

I have a new 21" base iMac with 16GB of OWC memory. This is my second iMac as I have had a Late 2009 21" for about a year.

Problem is on this new iMac, the daily time machine backups seem to be killing it. These are being done to my 1TB time capsule wirelessly. Once I wake it from sleep, time machine kicks on and everything crawls. I have excluded my VM's from backup as well as the 100GB iPhoto partition I created on my internal hard drive. But still even these daily incrementals CRUSH the system. Download netspeed times drop from almost 30Mbps to around 5. I get beach balls constantly and have had to even power the thing off as it stops responding as I wait for my time machine backup to cancel.

Now this worked FINE on my original iMac even without the exclusion of the VM's. It ran fine, never noticed a slow down at all. The only thing different is that 100 GB iPhoto partition that I now mount when I logon. I created this so I could share my library with both iMacs.

Note I used migration assistant to get my apps and files over then did a fresh install of the SL on the original iMac which my wife and daughter now use. I ran the Apple hardware test, no problems found.

UPDATE: Seems to be a known wi-fi problem with new iMac's
https://discussions.apple.com/thread/3042800?start=0&tstart=0

 

[philipma1957]

...
Problem is on this new iMac, the daily time machine backups seem to be killing it. These are being done to my 1TB time capsule wirelessly. ....

Ideas?

stop the wireless back up. It is slow.



I would say use superduper = link

http://www.shirt-pocket.com/SuperDuper/SuperDuperDescription.html


or ccc = link:

http://www.bombich.com/

use a wire fw800 hdd for now. look into t-bolt when it comes out.



if you really want TM use a wired hdd. fw800 is the fastest for now. T-bolt will be faster when it comes out..



I have a wired tm

and I do superduper I paid for the schedule option a one time fee of 27 bucks.

I make 2 clones a week on external hdds. it makes the clones at 2am on sunday and wed each week.

 

[Orlandoech]

stop the wireless back up.

I would say use superduper or ccc

use a wire fw800 hdd for now. look into t-bolt when it comes out.



if you really want TM use a wired hdd. fw800 is the fastest for now. T-bolt will be faster when it comes out..

^^^ What he said.

 

[Sodner]

Wi-Fi Problems with 2011 iMac's!

I found a 12 page thread on this problem on the Apple Support Forum. Apparently there is a problem with Wi-Fi in the new 2011 iMac's, both 21 & 27. People have tried new routers, OS reloads, different security, you name it and the wi-fi drop out problem persists. Apparently Windows OS's in Bootcamp do not experience any drop out so users are hoping its a software fix and not a hardware one.

https://discussions.apple.com/thread/3042800?start=0&tstart=0

Stinks that there is an issue but at least I am not alone.

UPDATE: Reports on the Apple Support Discussion Forum are that this problem has not been resolved in 10.6.8. Sad.