Ceph with slow and fast storage-pool

[mrtx]

Hi there,
I am just planning a cluster with three or four nodes.
I do not want to use external storage. I want to use ceph. I intend to have a fast storage pool using SSD's and a slower pool using HDD's.
In the videos and descriptions I did not find a way to assign SSDs and HDD to different Storage pools.
I only saw a way to declare disks as OSD's and to create logical pools out of them.
I would like to be certain that it is possible to do the separation before I buy hardware.

Friendly regards
mrtx

 

[sg90]

Hi there,
I am just planning a cluster with three or four nodes.
I do not want to use external storage. I want to use ceph. I intend to have a fast storage pool using SSD's and a slower pool using HDD's.
In the videos and descriptions I did not find a way to assign SSDs and HDD to different Storage pools.
I only saw a way to declare disks as OSD's and to create logical pools out of them.
I would like to be certain that it is possible to do the separation before I buy hardware.

Friendly regards
mrtx

Yes, you can use CEPH Crushmap to allocate particular OSD to separate root's and then allocate a Pool to each root, so you can have a SSD Pool and a HDD pool.

Some of the config you will probably need to do via the CLI, but once it's setup you can manage via Proxmox GUI as normal.

 

[mrtx]

Thank you.