How long should 2.06 TB take to backup?

Online calculator shows this:

2.06 TB @ 20 Hrs. = 228.9 Mbit\s

Over a 1Gbit network connection I would say performance could be better.

Have you actually completed the backup to see if it actually takes 20 hours?

Ed, is this a new backup task or one you've been running before? If you are doing NAS to NAS, you've got the network in both reading and writing direction so it will run a lot slower than a straight PC to NAS backup. Also, check your LAN speed. Sometimes the LAN can get dropped back to a 100Mbps speed which can be a killer.

I have 2.9TB on a SSD that takes anywhere from 7.5 - 12.5 hours to backup to a USB SATA drive 

Enchantech wrote:

Online calculator shows this:

2.06 TB @ 20 Hrs. = 228.9 Mbit\s

Over a 1Gbit network connection I would say performance could be better.

Have you actually completed the backup to see if it actually takes 20 hours?

 

The actual backup took 11 hours and eight minutes with the speed of 480.1 Mbps.  The verification step took almost as long.  The backup starts at 9 PM and ended at 8:07 AM the following day with the validation step completing it 8:04 PM.  What's interesting is in the log it says data to recover is 2 TB but in the email notification regarding the same backup shows the backup size is 5.72 TB.  I'm not sure why the difference.

 

Michael Mattheiss wrote:

I have 2.9TB on a SSD that takes anywhere from 7.5 - 12.5 hours to backup to a USB SATA drive 

Thanks

BrunoC wrote:

Ed, is this a new backup task or one you've been running before? If you are doing NAS to NAS, you've got the network in both reading and writing direction so it will run a lot slower than a straight PC to NAS backup. Also, check your LAN speed. Sometimes the LAN can get dropped back to a 100Mbps speed which can be a killer.

How do I check the LAN speed?

Thanks

Ed wrote:

BrunoC wrote:

Ed, is this a new backup task or one you've been running before? If you are doing NAS to NAS, you've got the network in both reading and writing direction so it will run a lot slower than a straight PC to NAS backup. Also, check your LAN speed. Sometimes the LAN can get dropped back to a 100Mbps speed which can be a killer.

How do I check the LAN speed?

The easiest way, if you have the MVP Assistant (link in my signature), the System Configuration tab will show your network and status in the upper pane.

From Windows, Settings->Network & Internet->Status... Properties.

(A couple years ago I was having an issue where the backups on one machine were taking way too long. The network link to that machine had dropped back to 100 Mbps for some odd reason. I believe the fix was to just unplug the cable and plug it back in.)

Ed

You can thoroughly test your network speed using LAN Speed Test

The Lite version is free to use.  You basically set an IP address to test from such as your PC and a network location folder as a target in a from/to configuration.

Below are results from a 2048 MB test file.