Shirt Pocket Discussions  
    Home netTunes launchTunes SuperDuper! Buy Now Support Discussions About Shirt Pocket    

Go Back   Shirt Pocket Discussions > SuperDuper! > General

Reply
 
Thread Tools Rate Thread Display Modes
  #1  
Old 08-27-2008, 04:03 PM
rhorer rhorer is offline
Registered User
 
Join Date: Aug 2008
Posts: 1
Slow backup to external FW drive

I'm on a PowerBook G4 1.5GHz with 1.25GB of RAM. When I back up one Firewire drive to another Firewire drive with SuperDuper using the 'erase then copy' method, my average copy rate (as reported by SuperDuper) is just under 4 MB/s. When I use 'rsync -aE' from a Terminal.app command line to make that same copy, my speed averages around 18 MB/s. Why might SuperDuper be so much slower?
Reply With Quote
  #2  
Old 08-27-2008, 04:32 PM
dnanian's Avatar
dnanian dnanian is offline
Administrator
 
Join Date: Apr 2001
Location: Weston, MA
Posts: 14,923
Send a message via AIM to dnanian
Because rsync -aE isn't actually preserving everything in the file, in most cases. I think you'll also find that subsequent Smart Updates with SuperDuper! are significantly faster.

I haven't found that rsync vs. SD!, in overall speed once done (time elapsed), is that different -- it's possible, too, that the measurements are not entirely comparable.
__________________
--Dave Nanian
Reply With Quote
Reply

Tags
performance, slow, speed


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Windows equivalent to SuperDuper!? jreffner General 21 08-13-2009 05:36 PM
Backup a currently existing MBP drive to a fresh drive with SD? montag General 4 05-22-2008 02:03 PM
Backing up an external drive to an external drive Nik001 General 3 10-27-2007 11:25 AM
How to verify a Scheduled Backup? tuqqer General 3 12-06-2005 06:50 PM
automatic initiation of backup when I plugin/mount my external Firefox drive? mykmelez General 3 07-11-2005 03:00 PM


All times are GMT -4. The time now is 07:14 AM.


Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.