Forum Discussion

Aspirant

Feb 28, 2021

Solved

File Transfer problems

I am currently runing a Readynas ultra 6 plus with 3 6TB and 3 3TB WD Reds via windows 10 pro, the PC is running i7 intel second gen with 16g of ram. The problem i'm having is if I transfer files larger than 1.5G from windows to the Nas, 7 out of 10 times the transfer will slow down speed and then stop, then fail. After this happens, I have to hard reset the Nas for windows to reconnect.

I am currently running Firmware 6.10.4 on the Nas, with Plex and SMB+ as the only apps installed. SMB+ is set at 3.1.1 max and 2.0 min. The PC and Nas both go into a D-Link DGS-1100-16 managed switch which is connected to a Linksys EA6350 router. I have been on the internet for days looking for potential fixes, but no luck so far. The Nas has a static ip address, has the MTU reduced to 1498 and has ipv6 disabled and has 5+ Tb of storage free. The router has the lastest firmware installed also. I have run Nastester 1.7 and get approx 105 MB write and 112 MB read, but occasionally the write speed will drop to 17 MB during the test. I have no problems writing or copying files from the Nas to Windows, only from Windows to the Nas. I have for the last couple of months, been transfering files via the Nas webpage and have had no problems (all beit being alot slower)

All cables from and to the nas have been replaced with new Cat6 cables (No change)

Can someone please suggest a fix PLEASE!!!!

bolter
Apr 12, 2021
Thanks to everyone that helped. I have now upgraded to 4gb of ram and that has now helped my file transfer problems. Thank you.

11 Replies

Sandshark
Sensei
Feb 28, 2021
How much RAM is in the NAS? Some have found that the stock 1GB of the legacy units is insufficient with OS6.10.x.

You may want to open an SSH session up the next time before you do that and have top running to see if any process(es) is/are getting to 100% of CPU usage.

Are you performing a volume balance somewhat regularly?
- bolter
  Aspirant
  Feb 28, 2021
  How much RAM is in the NAS? it is still running the stock amount 1GB
  
  You may want to open an SSH session up the next time Will do that if I knew how?
  
  Are you performing a volume balance somewhat regularly? I have never done that, ever.
  
  Thanks for the advice.
  - mdgm
    Virtuoso
    Mar 01, 2021
    You may also wish to look at RAM usage.
    
    If you have quotas enabled on the volume and lots of snapshots that can use a lot of memory. With just 1GB RAM I'd recommend disabling quotas on the volume and also using a custom snapshot retention policy if you wish to use snapshots to ensure that only minimal snapshots are kept.
    
    I rarely, if ever balance my data volume, so I differ from some here in thinking that balancing is recommended far too often. The NAS automatically returns empty chunks to unallocated space. If your volume was to get full enough to benefit significantly from a balance you'd need to free up space first anyway.
    
    With 5+ TB of storage space free there should be plenty of unallocated space but you can easily check that in btrfs.log.
    
    Note it's important what percentage you have free rather than the raw amount (5TB free on a 100TB volume is very different to 5TB free on a 19TB volume). With your volume you probably have about 25-30% of the capacity free which is a decent amount.