frezeen

i have a 8tb drive too , not SMR , wirte speed is about 170mb/s ... SMR out of box at 60mb/s is ******* for sure how u said, SMR at 133mb/s with that setting is not that bad .. but.. its normal a PMR drive is better how 2x ssd raid 0 is more better too. the post is NOT for to say: "oh... my ,useless for NAS , SMR disk is mega super wonderfull now" anyways, for me, setting do a big difference.. my lan is 1gbits/s (110mb/s) , i can transfer files at full speed to nas now.. with my SMR drive i cant it without that settings, and , i cant with real syno too (or ARPL bare installation) with this disk maybe

today i discovery that disk SMR have bad write speed performance, yes, i dont know before i buy one. anyways i try some settings with proxmox and ARPL for to fix something,if i can, and i discovery this: i try some disk settings for to passthru disk to my DSM VM. my disk is a segate desktop backup+ 6tb USB i pass the disk with qm set ID -scsi (or -sata) /dev/.... etc etc i read that SMR disk start to lose write speed when u start to write some data on it... at 100% free space disk look a normal disk and normal speed. i notice that a single 100gb file writed on a 6tb disk is enough for to start to lose performance so if u want to test disk and have a new free disk, first, copy at least 100gb data on it than start tests the command i use in DSM shell is: fio --name TEST --eta-newline=5s --filename=temp.file --rw=write --size=60g --io_size=100g --blocksize=1024k --ioengine=libaio --fsync=10000 --iodepth=32 --direct=1 --numjobs=1 --runtime=300 --group_reporting test file is 60gb and this are results with settings i try: -scsiX, cache (write back) , discard yes, IO yes, ssd emulation no WRITE: bw=63.4MiB/s (66.4MB/s), 63.4MiB/s-63.4MiB/s (66.4MB/s-66.4MB/s), io=19.5GiB (21.0GB), run=315600-315600msec -scsiX cache (write back), discard no, IO yes, ssd emulation no WRITE: bw=63.4MiB/s (66.5MB/s), 63.4MiB/s-63.4MiB/s (66.5MB/s-66.5MB/s), io=19.5GiB (21.0GB), run=315426-315426msec -scsiX, cache disabled, discard yes, IO yes,ssd emulation no WRITE: bw=108MiB/s (113MB/s), 108MiB/s-108MiB/s (113MB/s-113MB/s), io=31.6GiB (33.9GB), run=300217-300217msec look first 3 tests , cache enabled slowing the disk and discard has no effect -sataX, cache disabled, Discard yes, IO n.a., ssd emulation no WRITE: bw=120MiB/s (126MB/s), 120MiB/s-120MiB/s (126MB/s-126MB/s), io=35.1GiB (37.7GB), run=300135-300135msec i notice now: sata is better than scsi,but discard yes or not continue with no differences on HDD. i read trim help a SMR and we know discard is a trim command, so, why no affect tests? maybe trim is not enabled in syno OS becouse its a HDD so a try to emulate it like a ssd and see if work: -sataX, cache disabled, discard yes, io n.a., ssd emulation yes WRITE: bw=133MiB/s (140MB/s), 133MiB/s-133MiB/s (140MB/s-140MB/s), io=39.0GiB (41.9GB), run=300104-300104msec so.. for my test, best settings for a SMR disk on proxmox VM and DSM is last one: pass the disk to vm with sata mode, disable cache, enable ssd emulation, enable discard (trim) 133 mb/s is like a normal HDD, disk continue to have some random peak low speed (less than 1 sec long) but average is good enough. just for fun, test the disk with win11 out of box, format it , copy 100 gb data for to start low performace mode and start speed test. write speed on win11 is 60-80mb/s , always 60gb test file, 5 test runs. same speed of test with cache enabled on proxmox sorry for long post, what do u guys think? can someone try it too?

update kernel to 6.2 and install intel-microcode and u dont have anymore VM freezing follow this link: https://forum.proxmox.com/threads/vm-freezes-irregularly.111494/ this happened with DMS and ur CPU in proxmox vm (N5105) update intel microcode to 23 and manual to 24, follow topic instructions

i create a new VM machine in proxmox.. set img with sata0 and a 32gb disk for install system scsi0, i set all addons and all modules, but when 918+ start dsm dont recognize 32gb disk... a go to screen where dms ask me to install disk and refresh for to found it. how can i fix this?

@fbelavenuto is possible to add a qemu-agent-guest module for proxmox?

update with menu.sh from beta11a to latest 13 and grub error, DSM proxmox vm dont start anymore

its normal, with proxmox i have to load virtio modules becouse with virtio 9p addon i cant see my virutal HDD and virtual NIC??? whats the use of virtio 9p addon ??

pls can someone explain differences from modules and addons?

someone have a guide or a way to enable quicksync on a VM proxmox machine created with ARPL loader?

solved with: i440fx in proxmox and disks to VM with -sata option and not -scsi. i have 2 disks in slot 2 and 3 now

update from alpha to beta, restored the saved user-config.ym in /mnt/p1, rebuild the loader , start recover process in DMS ,update process OK with no problem in proxmox VM i have a proplem only, how can i set disk in the 4 slots of ds918+? i have a virtio scsi single, with 2 qemu scsi disks in proxmox VM but DSM call them disk 13 and 14, i want disk 1 and 2 or something in that 4 slots only

ok i success update to 42962 from 42951 from web nas i manual install 42962, vm reboot to config loader... from console or loader interface, update arpl to apha5, selct what i need (9p addon) , build loader, restart and system is updated im not sure if u can skip some steps, this is what i do for update my system

update arl to alpha 5 and loader dont boot, hang here edit: ok , i can start menu.sh from console, but i think something is wrong edit2: ,update addons, modules etc etc, i build 42962 (im on 42951) add 9p addon (my system is vm proxmox machine, need virtio), boot DSM and nas miss my virtio eth, i dont have a IP.

edit: dont take care of this post.