FreeNAS seemed fine, but the LUN within the VM reported 100% utilization. Never could get that level of performance out of FreeNAS save for blowing out the data and starting fresh then after a few weeks it would just tank and we'd get maybe 25-100Mb/sec per iSCSI channel speeds. Also, as an aside, check you're using ReFS 64K on your storage LUN. Seriously getting over 1GByte/sec backups and we're using reverse incremental backups. To you OP, we moved off FreeNAS for backend LUN storage for Veeam Storage VM.bought a RAID Controller for the former FreeNAS box, and turned it up as Windows Server 2019 system and use the proxy and storage roles on it.

Needs to be at least the size of the RAM on your storage box. You may want a larger test file - if your test file is sitting in ARC you are reading your cache rates which will give great numbers but they aren't realistic. I apologize that i have multiple questions but I wanted to show big picture. Other possibility is to replicate from shared storage to backup server. Veeam is virtual machine (8 vcores, 12GB Ram) and i attached this storage as D drive, so it looks like local drive.īackup Repository maximum concurrent tasks to 4īackup job storage optimization: Local target

Max Veeam read speed is 643MB/s and Processing rate 304MB/s. VSphere VMFS 6.82: 512 format, thick privision, block size 1MB (cannot change), space reclamation granularity 1MB (cannot change)Įverything works but even when Veeam does incremental backup and only transfers 20GB, it's quite slow (30-112MB/s). I am clueless about optimal record and block settingsġ6TB zvol with lz4 compression on, dedup off.Ģx 10G iscsi mpio with round robin iops 1 setting in vSphere.

I know with 4 disks (2 vdevs) write speed is really slow, i'm going to by 4 more drives. I bought backup server (check signature) with 4x Seagate Exos X14 12TB SAS drives and fast formatted them to 4096 bytes sector size and updated latest firmware.

Veeam size calculator