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Backup from Firewire 800 disk to NAS is slow!?
Hi All,
I have RN426, connected to my Mac Pro 5.1. Two days ago I started back up of one of my Firewire 800 disks (WD 2TB). I used Carbon Copy Cloner to back up whole 2TB disk (almost full) to a newly created Share on the RN426. This NAS has fresh new two Ironwolfs Pro 16TB and two Barracuda's of 1TB each. I started back up almost two days ago and it is still copying. The files on the disk are 90% Pro Tools sessions with lots of wav and aiff audio files. This just doesn't look good to me as it is taking so long. One thing I see now is that the Share I created on NAS for this purpose has only one protocol: SMB. If I had used AFP or something different, would that help with the transfer speed? This is all quite new to me so any help is appreciated.
NND wrote:I just restarted computer (after two days) and then run Blackmagic Disk Speed Test on that NAS share and got about 99MB/s write and 95 read, that should be good speed?
Yes, that is what you'd expect for gigabit ethernet. However, if you copy a lot of small files, the speed will drop.
Have you compared the drag-drop speed to the mac with your carbon copy cloner?
Then perhaps also compare drag-drop from the NAS to the firewire drive with the drag-drop from the NAS to the mac hard drive.
9 Replies
Is the NAS volume still syncing? If so, that will slow thngs a lot.
What are the connections from the NAS and Mac to the router and/opr switches involved (gigabit Ethernet, wifi, etc.)? Does Carbon Copy Cloner send one big file, or many? Are files verified after writing? Is Strict Sync enabled for the share? Is enahced SMB access for Mac enabled?
I doubt the SMB protocol is the main issue, and the answers to the above may help us figure out what is.
- NAS is connected to Gigabith ethernet port on Mac via the router GS116Ev2.
- Carbon Copy Cloner is making copy of the disk content so it is sending all the files one by one, I guess.
- I don't know about files being verified after writting, where can I check this?
- Strict Sync is enabled.
- Enhanced SMB? Don't know about that, can not find much about this either. Where should I look for this?
Under System/Settings/SMB, there is an Enhance MacOS checkbox. Strict sync is probably not a factor for a bunch of smaller files.
What about the volume syncing? If that's still ongoing, use of the volume will be slow, and doing the backup now will slow the sync.
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