Results 1 to 9 of 9
  1. #1

    RadDave's Avatar
    Member Since
    Jan 20, 2012
    Location
    North Carolina
    Posts
    3,234
    Specs:
    MBP 13" (2013); 8 GB RAM; SSD 256 GB; OS 10.11.5
    CCC - markedly different BU times - why?
    I've been using Carbon Copy Cloner on my MBPro (specs in signature) & iMac (specs below), purchased in March & April 2013, respectively. Cloned both HDs today - on the iMac the process took over 40 minutes and transferred just under 2 GB of data (3rd clone); however on the MBPro the process took less than 5 minutes w/ over 3 GB of data (also 3rd clone).

    Now both machines have USB 3.0 and I'm using an OWC external HD w/ a partition for each computer, so the external drive, cable, and USB standards are identical. The only difference that comes to mind is the 1 TB Fusion drive vs. the 256 SSD, i.e. is it just the solid state electronics making the difference or should I look for other issues? Thanks - Dave


    iMac 21.5" display
    OS X 10.9.1
    2.9 GHz Intel Core i5
    16 GB 1600 MHz DDR3
    NVIDIA GeForce GT 650 M 512 MB
    Fusion Drive 1 TB

  2. #2

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    21,843
    Specs:
    Imac 27" Retina 3.3GHz, 512GB Flash, 16GB memory, OS X.11.4.
    Think you have hit the nail on the head with the SSD.
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  3. #3

    RadDave's Avatar
    Member Since
    Jan 20, 2012
    Location
    North Carolina
    Posts
    3,234
    Specs:
    MBP 13" (2013); 8 GB RAM; SSD 256 GB; OS 10.11.5
    Quote Originally Posted by harryb2448 View Post
    Think you have hit the nail on the head with the SSD.
    Thanks Harry - I realized that the SSD cloning would be faster but 10x seems a little outlandish to me? So, just wondering - hopefully others who are using CCC on similar machines will 'chime in' and make the same observation - might try to contact the CCC developers to get their opinion - will post back if they respond. Dave

  4. #4

    MacInWin's Avatar
    Member Since
    Jul 07, 2008
    Location
    Winchester, VA
    Posts
    5,631
    Specs:
    2011 MBP, 2008 iMac, iPhone 6, iPad mini, 13" MBP, AppleTV and two MacMinis
    SSDs are blindingly fast, to the point that the bottleneck is usually the connection to the drive but you have eliminated it. I would expect the SSD to be faster, but 10x is startling. Depending on the settings in CCC, it's possible that what CCC did is to copy over ONLY what was changed since the last backup. That's how I have CCC set up, and I also ask it to archive what it replaces so that I end up with something similar to Time Machine in that I can go back in the archives to get to an older file if I have to. Could that be it?

  5. #5

    bobtomay's Avatar
    Member Since
    Dec 22, 2006
    Location
    Texas, where else?
    Posts
    26,462
    Specs:
    15" MBP '06 2.33 C2D 4GB 10.7; 13" MBA '14 1.8 i7 8GB 10.11; 21" iMac '13 2.9 i5 8GB 10.11; 6S
    It is not possible to compare the time frame of clone backups on two different machines.

    How much used space on each machine? How much has changed on each machine since the last backup? The backup process does not only transfer data. It compares the source drive to the backup drive which means verification of all data on one vs the other - it also includes deletion of data no longer on the source drive and associated cleanup...
    I cannot be held responsible for the things that come out of my mouth.
    In the Windows world, most everything folks don't understand is called a virus.

  6. #6

    RadDave's Avatar
    Member Since
    Jan 20, 2012
    Location
    North Carolina
    Posts
    3,234
    Specs:
    MBP 13" (2013); 8 GB RAM; SSD 256 GB; OS 10.11.5
    Thanks for the additional comments - we really don't add a lot on these computers and the iMac had about a GB less data transferred (vs. my MBPro) - weird behavior to me - WELL, I left a contact email at the CCC site and hopefully they will respond - will post back if so - of course, my main concern is whether my iMac is the problem (had a fan issue that I posted in another thread) - thanks again - Dave

  7. #7

    harryb2448's Avatar
    Member Since
    Nov 28, 2007
    Location
    Nambucca Heads Australia
    Posts
    21,843
    Specs:
    Imac 27" Retina 3.3GHz, 512GB Flash, 16GB memory, OS X.11.4.
    Also Dave adverse comments abound on Fusion Drive and Mavericks.


    Fusion SSD very slow with Mavericks - MacRumors Forums
    Hang on to those original install discs like grim death! Using OS X.7 or later make a bootable USB thumb drive before running Installer!

  8. #8

    RadDave's Avatar
    Member Since
    Jan 20, 2012
    Location
    North Carolina
    Posts
    3,234
    Specs:
    MBP 13" (2013); 8 GB RAM; SSD 256 GB; OS 10.11.5
    Quote Originally Posted by harryb2448 View Post
    Also Dave adverse comments abound on Fusion Drive and Mavericks.
    Fusion SSD very slow with Mavericks - MacRumors Forums
    Hi Harry - yes, I've become more aware of the issues w/ Apple's fusion drives (should have read up more in the spring before I selected that option) - not sure if these 'problems' are hardware or software related primarily, at least if more the latter OS upgrades may help?

    I looked at the link provided and most of the comments seemed to be in setting up one's own hybrid drive using either an internal or even an external SSD - not much discussion of the Apple fusion drive but will do some more searching & reading. I do have Apple Care & a local store (where we bought the iMac), so I feel comfortable about obtaining help if needed.

    Dave

  9. #9

    RadDave's Avatar
    Member Since
    Jan 20, 2012
    Location
    North Carolina
    Posts
    3,234
    Specs:
    MBP 13" (2013); 8 GB RAM; SSD 256 GB; OS 10.11.5
    Just for those also wondering about backup times on different computers w/ CCC - I emailed them and received the reply below the next day from Rob Compton - the link is to their FAQ topic that addresses this issue.

    This is an excellent review of the factors that go into the timing of cloning a HD or SSD (or a fusion hybrid) - not sure that it answers my questions as to the 10x difference discussed previously? I suspect that this is likely related to my faster SSD on the MBP and possibly issues with reading/writing from the fusion drive on the iMac to my BU partition.

    Dave

    From: Rob Compton (Bombich Software support staff)
    Subject: BU Time on an iMac w/ fusion drive vs. MBPro w/ SSD - dramatic
    difference?

    Dave,

    There are a lot of factors that can affect performance. We cover the basics
    here:
    How long should the clone or backup take? / Frequently Asked Questions and Troubleshooting / Knowledge Base - Bombich Software Support

    RAM, running apps, other utilities can all come into play.

    Best wishes,
    Rob

    Rob Compton
    Bombich Software, Inc.
    Mac Backup Software - Carbon Copy Cloner

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

Similar Threads

  1. CCC question?
    By Jonzjob in forum Running Windows (or anything else) on your Mac
    Replies: 17
    Last Post: 01-07-2015, 01:25 PM
  2. Why do I need to pay for CCC?
    By Rod Sprague in forum OS X - Apps and Games
    Replies: 4
    Last Post: 08-02-2013, 11:37 PM
  3. Ext. HD and 10.6 TM vs. CCC
    By cad2blender in forum OS X - Operating System
    Replies: 1
    Last Post: 09-09-2009, 09:01 PM
  4. CCC VS. TM Cloning
    By cad2blender in forum OS X - Apps and Games
    Replies: 3
    Last Post: 09-08-2009, 05:05 PM
  5. CCC + iMac's.
    By Roasted in forum OS X - Apps and Games
    Replies: 3
    Last Post: 06-30-2008, 03:24 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •