I've recently installed a trial of unraid 6.7.0, now updated to 6.7.1 to my HP Microserver Gen8. Currently I only have two drives in the array, a 4TB WB Red and a 2TB Seagate Barracuda, no parity drive and no cache drive. The plan is to migrate from WHS 2011 running on my HP N36L to unraid on the Gen8. Once migrated I'll add a second 4TB WD Red to be set as a parity disk, 1 more 2TB Barracudas and a 250GB SSD as a cache disk.
I've avidly followed Spaceinvader one's excellent guides, preclearing my HDDs, built the array, created shares and am currently at the stage of moving media from my WHS machine to the unraid machine using Krusader.
Considering I have no parity disk, whist moving my movies collection (mostly 10 to 70GB mkv files) I'm seeing transfer speeds top out at around 40MB/s.
I've benchmarked the drives using the DiskSpeed docker, the WD tops out at around 140MB/s dropping off to 65MB/s at 4000GB, and the Seagate around 170MB/s trailing off to 70MB/s.
I've tested my network speeds using a speedtest docker with reverse proxy on a client connected to the same switch as the unraid machine. I'm easily topping out my 1Gb connection.
To a different client again on the same switch, I can copy from the SMB share on my WHS to an SSD topping out 1Gb and to an HDD at around 80 to 90 MB/s.
The FCP plugin shows no issues and I've checked write caching is enabled on both drives in the array. I've also tried setting reconstruct write and this made no difference, which I assume it shouldn't since I currently have no parity drive... All array disks are SATA ..
Am I being unrealistic to expect a write speed higher than 40MB/s? Or any other suggestions/ tips would be very much appreciated.