PBS storage in NFS

LM-MAE

New Member
Sep 18, 2024
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Hi, I have a small data center with 2 PVE hosts and about 40 Vm. I wanted to start using PBS for backups. I wanted to understand if it was possible to mount an NFS share of a QNAP NAS to use as a backup datastore. Thanks
 
Yes, mounting a remote NFS for a destination Datastore in PBS is possible.

It is not recommended though. Do you know https://pbs.proxmox.com/docs/installation.html#recommended-server-system-requirements ? It tells us: "Prefer fast storage that delivers high IOPS for random IO workloads; use only enterprise SSDs for best results."

The problem is that network storage is slow. At least when compared to a local SSD. So when you additionally have a slow harddisk inside that NAS it may get too slow to work reliably. If that NAS utilizes SSD this problem is much smaller. If you have more bandwidth than a single GBit/s it will work better.

PBS writes (and reads) a lot of small files. Each and every chunk has to go through the wire. One by one. There may be millions of them. So... Latency is the magic keyword to get some acceptable IOPS!

Just try it!
 

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