Extremely poor iSCSI performance | SSDs | Proxmox

[kris]

Not sure if it was mentioned, but did you check your drive write-caching?

2MB/sec SMB transfer speed to TrueNAS Scale Storage

Riddle me this, from the same root command prompt: for disk in /dev/sd?; do; hdparm -W $disk; done What you should see is a number of outputs similar to: /dev/sda: write-caching = 1 (on) /dev/sdb: write-caching = 1 (on) /dev/sdc: write-caching = 1 (on) /dev/sdd: write-caching = 1 (on) If, on the other hand, you see any drives with it off - then that’s potentially our problem.