hi,
with our server upgrade to a new cluster we thought, hmm… VMWare vSAN sounds interesting, but no… it is not,… so we consider about getting a 24 bay server for truenas.
but… zfs as a whole is absolut new for me so im not sure which one to chose - we would use 24 of our atm 36 drives, so enough spare drives would be there. but im not sure which raidz would fit the best, z1, 2 or even 3?
the storage would be connected via 2x25 gbit and has to handle the 4 esxi hosts which hold around 60 vms, incl. dc, exchange, sql server with around 1tb database, other application servers and rds servers for around 200 users.
so the only purpose for truenas would be iscsi storage for the esxi hosts.
the other idea would be an active passive cluster with like 16 drives per node and 2 spare drives, is an active passive cluster possible with truenas?
so a vdev is analog to a classic raid array? like 6 drive raidz2 vdev would be kinda like an 6 drive raid 6 raid array?
and more smaller vdevs result in higher iops / throughput but in an “fragmented” storage? like in 4x6 4tb drive raidz2 vdevs i would have 4 storages with around 16tb?
and what do u mean by 50% full usage? usage in activity or used space? i thought zfs needs like 20% of the storage for internal stuff.
