cdman

Thank you very much, I see manual copy as best option now as using autovmbackup script and some other scripts often fail even with VM powered off. Backing up 4x 100GB VMs with speed 50-75MB is really test of someones nerves, lol. Used 10GB NICs in VMware and Synology/Qnap as targets before and it was like 300-500 MB/s to old spinning HDDs in RAID5. I even used Unassigned HDD as a target, used turbo write, shut down parity and cant get more than 75MB/s when backing up VMs from cache SSD in RAID0 to array or unassigned brtfs HDD. Recalculating parity or precleaning HDDs is 180 MB/s - real/advertised speed of single HDD. I understand parity thing - just its really slow for my use. Maybe all SSD array /TRIM thing resolved/ could be my solution in the future... One more idea: use brtfs SSD pool in Unassigned devices as backup target ? but thats insane price ratio wise.

As I spent 4 days understanding/googling forums about mover/cache functionality as a last resort I ask here in forums maybe simple question: Is it possible to have: VM/domains data to RUN from cache ONLY and in case of running Mover - let it COPY new/changed files to array - I mean copy, not MOVE. I already experimented with all cache options and they are absolutely not built to handle such situation. Or maybe not cache option but MOVER. We cant control Mover behaviour. As I see it its only possible with copy scrips or manual copying. Running VMs is maybe better to have it all on Unassigned devices which are unaffected by mover. First I thought that mover /using cache Yes or manual invoking/ will compare files on cache and array and then will copy newer files from cache to slow array but its not. I have all cold data on array of 2x4TB + 1x4TB parity, BRTFS Cache is pool of 2x 1TB Samsung 860 SSD in RAID0 /on purpose/ Running 4x VMs with passthru NICs. I do lot of VM testing /coming from VMware Vsphere/ so need to have fast primary storage and reliable back up to big array nightly. Or should I forget Mover for good and let copy scripts take over ? Thanks for all constructive hints/solutions.