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Thank you both for sharing your knowledge. First I like to say, please be careful in recommending putting a RAID controller in HBA mode and using ZFS. I have seen this recommendation a lot in this forum and most of the time without precise information about the scenario. According to my tests...

Thanks for answering that fast. Let me ask some other questions to make it clear for me. 1. Where are data cached when using ZFS (RAIDZ) and "none", "writeback" or "unsafe" at VM's disk cache? 2. Where are data cached when using Hardware RAID and "none", "writeback" or "unsafe" at VM's disk...

Hello, I need something to be clarified regarding disk caching. Here you can find a table regarding different caching options (none, writethrough, writeback, directsync, unsafe): https://pve.proxmox.com/wiki/Performance_Tweaks There is a column called "Disk Write Cache". Which disk cache is it...