Slow music library transfer to Nucleus SSD takes over a day (ref#5LQKG2)

Support
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Hi! What’s not quite right with Roon?

· None of the above quite fits

None of the above quite fits

· None of these quite match

Tell us what's going on

· I am just setting up my Nucleus one, installed and formatted a 4Tb SSD and am now copying my music library from a network drive to the SSD in the Nucleus. I have three main libraries and am currently copying the first one, size 820 Gb. The file manager states that this will take more than a day. This seems excessively long to me and would go muh faster if I copied from one drive to another on the Mac.
Please advise?

Tell us about your home network

· I have an Omada SDN network where most of the traffic runs over a managed switch. In this case the library to copy is on an Eversolo DMP-A10 networked via Fibre connection. Should I maybe connect the nucleus to the A10 directly via USB?

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Transferring 820GB depends entirely on your network speed (Mbps or Gbps); for example, over a Gigabit Ethernet (1 Gbps) (around 125 MB/s), it would take about 1.5 hours, while a slower 100 Mbps connection would take roughly 14-15 hours, and a very slow DSL (~0.64 Mbps) could take several days.
As you to copy via a PC/MAC, I guess, bandwidth gets haled and time doubled – so a 100 Mbps connection would require over a day (more than 24 hours). You could try and use a faster connection? With a 1 Gbps Ethernet connection this transfer should finish in around 3 hours – less than a good night’s sleep.

1 Like
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Hi @Jim_Reinsma,

Thanks for writing in and sharing your report! @BlackJack is quite correct in the above reply.

It may very well be faster to use your Mac as the transfer hub - are you able to connect the 4TB SSD to your Mac? If so, the workflow would look like:

  • Mount the Eversolo’s library on your Mac
    • Via SMB / network share (as you’re already doing)
  • Connect the 4 TB SSD directly to your Mac
    • USB-C / Thunderbolt enclosure
  • Copy from Eversolo → Mac-attached SSD
    • This is still network-limited on the read side,
    • but it avoids the Nucleus’s very slow SMB write path.
  • Install the populated SSD into the Nucleus
  • Boot Nucleus → Roon indexes the music

Let me know if this makes sense, and if it helps! :raising_hands:

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Yes that makes sense, I would have done that in the first place but I was told that the Nucleus needs do its own formatting of the SSD in order to work well. Will MAC accept the Nucleus formatted disk?
If so this is the way forward as I will have to copy another 2.5 GB which on the current speed would take me all week :face_with_bags_under_eyes:

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Thx @BlackJack. Clear!

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Unfortunately the ssd formated by the nucleus is not accepted by the Mac. I tried it with my MacBook Pro Intel as well as with a Mac mini M1. Would it be possible to creat a direct connection with the nucleus and the Mac via usb?

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The Roon Nuclei are designed as networked appliances, there is no point to connect them via USB for file transfers. For MAC you would need a filesystem driver that supports EXT4 (maybe a commercial one exists from Paragon? Please consult other threads or the internet for more information.) if you want to use the formatted disk from the Nucleus with it.

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Hello @Jim_Reinsma ,

This is correct, the Nucleus internal SSD gets formatted as EXT4. I was searching around and fount the following blog post, I can’t speak at all to the accuracy but maybe it will help in your case:

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This thread is closing due to inactivity under the assumption that the issue has been resolved. If you still require additional troubleshooting or assistance, you can reactivate the topic thread by submitting a new support request here. Our team will merge threads accordingly to keep everything in one place.

Thank you!