ZFS RAIDZ Drive Requirements - RAID Z requires 3 drives or more - RAID Z2 requires 5 drives or more - RAID Z3 requires 8 drives or more
https://raidcalculators.com/zfs-raidz-capacity.php Hope this help ! Le dim. 24 avr. 2022 14 h 40, Marco Gaiarin <[email protected]> a écrit : > > In a set of servers (some brand new dell T440 with 64GB or RAM, 2 500M SSD > ZFS Raid 1, three 4TB HDD in ZFS raid3) we are catching some performance > issue, eg in some operation we catch 10/20 MB/s maximal performance, with > load that go sky high (load 40). > > > An example: a couple of identical servers, connected via single gigabit > connection. > I've setup on server B a NFS server on HDD ZFS pool, then a NFS type > storage > (on both servers, they are clustered). > > I've copied from my PC a PVE VM backup, roughly 500GB of data, via NFS to > server B: 80-90 MB/s, load 2-4. > > I've restored the VM on server A, thus *reading* data fron NFS, and > restoring again on HDD ZFS pool on server A: 10-20 MB/s transfer rate, load > at 40. > > > This make no sense to me. As subject say, there's some 'Disk performance > test > guidance' document, so i can test and find the bottleneck? > > > Thanks. > > -- > Consolatevi! Sul sito http://www.sorryeverybody.com migliaia di > americani > chiedono scusa al mondo per la rielezione di Bush. (da Cacao Elefante) > > > > _______________________________________________ > pve-user mailing list > [email protected] > https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user > > _______________________________________________ pve-user mailing list [email protected] https://lists.proxmox.com/cgi-bin/mailman/listinfo/pve-user
