Micron 9300 vs Consumer SSD on Proxmox Install

[gelcom]

Hi all, this is my first Proxmox Install.

I have 2 consumer 240gb SSD and 2 Micron 9300 MAX 3.2 TB drives.

Should I install Proxmox on my 240gb SSD with ZFS RAID-1 and my VMs on the other 2 Micron 9300 MAX in a ZFS RAID-1 or install Proxmox and also store my VMs on ZFS RAID1 Micron and don't use my consumer SSDs?

I’ve been reading here in the forum that zfs and proxmox is disk intensive and using a consumer SSD can be dangerous as the disks can fail quickly. I’m not sure if this relates only to VM disks or to Poxmox install media also.

if somebody can give me some good thoughts on this...

kind regards

 

[leesteken]

Good idea to separate the Proxmox system from the VMs: heavy I/O of one won't affect the other. Proxmox doesn't need all 250GB (more like 8), so use the rest for storage that is not constantly written to like ISO storage and templates and such.

 

[Dunuin]

Consumer SSDs for the boot pool should be fine as long as you are using a mirror (raid1) and not use it to store VMs. Proxmox should write about 30GB per day (+ write amplification) while idleing. You can also limit the size of the partitions proxmox is using (see "hdsize") to for example 120GB so half of the drive is unpartitioned and can be used for wear leveling.
But keep in mind that your consumer SSD probably won't got powerloss protection and will loose data if a power outage occures and many of the SMART attributes won't be updated while the server is running, so you don't know if your drive is healthy if you don't reboot it for a long time.

 

[gelcom]

Consumer SSDs for the boot pool should be fine as long as you are using a mirror (raid1) and not use it to store VMs. Proxmox should write about 30GB per day (+ write amplification) while idleing. You can also limit the size of the partitions proxmox is using (see "hdsize") to for example 120GB so half of the drive is unpartitioned and can be used for wear leveling.
But keep in mind that your consumer SSD probably won't got powerloss protection and will loose data if a power outage occures and many of the SMART attributes won't be updated while the server is running, so you don't know if your drive is healthy if you don't reboot it for a long time.

Thanks. So wouldn’t be better to have boot pool and VM pool both in the same raid1 mirror of 2x 9300 MAX drives and not use my consumer grade SSDs? This way I can have powerless protection + more endurance for boot pool also.

Are there any drawbacks in this setup?

kind regards

 

[Dunuin]

Are there any drawbacks in this setup?

Only that you can run into problems if your SSD utilization gets up to 100%. Its like with the CPU or RAM utlization. You need to make sure that all VMs together will never utilize 100% of SSD/CPU/RAM or your VMs will make Proxmox unable to operate.