Very slow write speed NAS326 RAID1 via NFS

Pete2019

Hi,

I have a NAS326 with two 4TB disks installed. I have created a single Volume using raid1.

I have install NFS via the app center and created a single (/data) share which is read/write.

I then mount the NFS share to my linux box using autofs using the following.

/data       -fstype=nfs4,rw,noatime nas:/data

I checked in the /etc/exports file on the NAS326 and changed (as some have suggested, sync to async)
/i-data/bc2c904e/nfs/data *(rw,async,no_subtree_check,wdelay,no_root_squash) #

I test the write speed by using rsync:
rsync --progress -av <big-file> /data

Firstly it pauses for a good 10-20 seconds then copying starts and I get a average speed of about 20MB/s

I repeat the same exercise with the same directory shared using Samba and get close to 70MB/s

My question is, why that exactly the same directory shared via NFS is so much slower than Samba share? Any suggestions of how to improve this situation would be grateful. I would have assumed using native linux format would be better. I would prefer to use NFS as I would like to preserve file ownership and permission when saving to the NAS drive.

I did test a similar setup with another box on the same network and I am actually getting over 110MB/s  write speeds which is close to the limit of my home Gb network.

Thanks,

Pete. 


#NAS_Sep_2019

vidra

I am having  a similar issue wth my NFS, the app seems to be buggy. Dos your NFSv4 work instantly?

martinst68

Same issue here, did either of you figure out the issue and have any pointers?