Hi all,
We're about to deploy a pair of Proxmox servers in an existing cluster, and have to decide how to store the OS. All 8 drive bays will be used for Ceph OSDs, so we were looking at either:
A) Install to internal USB stick. This stick will be a branded (SanDisk) model, so not cheap rubbish that is likely to die fast.
B) Install to a pair of cheap (30GB or so) SSDs that are mounted on a board in the PCI-E slot, which will be a software RAID.
Thus my questions are:
1) What has people's concern(s) been specifically with USB sticks in the past? Is it due to cheap sticks ceasing to work for no reason? Or more related to duty cycle/tolerance?
2) If we used either solution, and the node died, what sort of DR plans do people use in this case to essentially re-create the machine as an empty node in the cluster again, ready for the Ceph data to be re-populated.
I'd be quite interested to hear people's opinions on this.
Thanks,
Jon
We're about to deploy a pair of Proxmox servers in an existing cluster, and have to decide how to store the OS. All 8 drive bays will be used for Ceph OSDs, so we were looking at either:
A) Install to internal USB stick. This stick will be a branded (SanDisk) model, so not cheap rubbish that is likely to die fast.
B) Install to a pair of cheap (30GB or so) SSDs that are mounted on a board in the PCI-E slot, which will be a software RAID.
Thus my questions are:
1) What has people's concern(s) been specifically with USB sticks in the past? Is it due to cheap sticks ceasing to work for no reason? Or more related to duty cycle/tolerance?
2) If we used either solution, and the node died, what sort of DR plans do people use in this case to essentially re-create the machine as an empty node in the cluster again, ready for the Ceph data to be re-populated.
I'd be quite interested to hear people's opinions on this.
Thanks,
Jon