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dear all Why is it that if I assign the second LUN storage, the capacity is not more than 2TB, even though I assign more than 2TB, I use Hitachi FC SAN storage, I have tried converting using gdisk but it always fails

I already know the problem... it turns out that the Dell R750 does not tolerate the use of consumer SSDs and must use enterprise SSDs, because previously I had experience using the Dell R630 using consumer SSDs was ok... but not with the R750

this was fine for more than a month...and suddenly it happened...replication error and system became very slow and my SSD is fine seen in idrac and ZFS status

but after I read it there was writing like this "A non–RAID disk is a single disk to the host, and not a RAID volume. The only supported cache policy for non–RAID disks is Write-Through.

Where is the setting, sir? Is it in the virtual disk setting?

Thank you for your solution, I will check my system configuration.

does that mean the Raid controller has to be disabled?

thanks for reply I haven't checked yet....can it cause that if the cache controller is disabled?

dear all I am using Dell R750 with PERC H755 controller, but why is my ZFS unstable..and I have used non Raid (HBA mode), SSD status is fine, but replicated fails and the system is very slow Is there a controller setting that can be changed or other settings? Thanks

Dear all good or bad idea if we mix replicated pool and erasure coding in one ceph cluster proxmox and in one device class ? thanks

solve...thanks....edit to storage nodes

Hey I want to ask, how to remove local-lvm storage from 1 node only in the cluster and all of it is local-lvm, and I installed zfs on one of my servers but the local-lvm is still there and the status is inactive how do I delete it?

Ok thanks

https://openmetal.io/wp-content/uploads/2021/12/Public-to-Internet-Erasure-Coding-Calculator-v1.0.xlsx This wrong ? 10 nodes = k=8m=2

OK, thanks... and what percentage does this get for storage? and can the default configuration k=2m=1 be used if domain failure = host, with 10 nodes, so that if I add more nodes the configuration is still feasible

k+m calculation is the number of OSDs or the number of hosts if I choose domain failure = host? Or is there an easier way to determine it, I don't really understand how to determine the right one For example, I have 10 nodes and each node has 5 drives, and the drive capacity is 3.8TB, how do I...

dear All what if we create an erasure code pool, for example I have 10 hosts and I create EC-Profile = k=8m=2 but then later I increase the hosts to 14 hosts, can I edit the EC-profile to k=10m=4, or is there Another better way to make it more flexible ?

Ok I m sorry

ok thanks

ok thanks...