1st use of Time Machine

[Bri in Mtl]

My MacPro is doing a backup for the 1st time with Yosemite.
Seems to be taking a longer amount of time than usual to do this backup.
Also noticed it's a 20+ GB.
Is this normal? I've never really noticed it prior to this.
Thanks for any and all replies.

 

[maflynn]

The initial Time Machine backup tends to be the slowest one of all. As long as you see progress being made, be patient.

 

[Drag'nGT]

Yes, but the time will matter based on connection. What Mac Pro do you have and how are you connecting? Newest Mac Pro via thunderbolt to an external SSD or USB 2 to an external laptop hdd?