LVM Best Practice Suggestions

[adzam]

I have a Dell R710 with the following drive configuration. CacheCade and RAID arrays are setup on a H700.

• 2x 120Gb Kingston SSD (CacheCade)
• 2x 146Gb Seagate SAS (RAID 1)
• 4x 600Gb Western Digital SAS (RAID 10)

I would like to have Proxmox on the RAID 1 array and use the RAID 10 array for VM storage. For not I am testing out CacheCade, I may end up using the SSDs for performance critical VMs if I don't find CacheCade to be providing any benefit.

Anyway, I am unsure of the best way to set this up. Am I better off just creating a new VG and LV for the RAID 10 array or removing the data LV and recreating it with the RAID 10 array?

Also, once I start using the RAID 10 array for VM storage, what is the best way to utilize the RAID 1 array? Should I give all the extra space to root for backups and ISO storage?

I am strongly considering just getting another two 600Gb SAS drives to replace the 146Gb drives and putting everything on a RAID 10 array, but I feel that money could be better spent on more RAM or drives for my NAS.

Any tips, suggestions, and/or advice would be greatly appreciated!

 

[Alwin]

If you use the PVE 5 media for install, you can setup a RAID1 with zfs during install. The RAID1 can also be used for VM/CT images as zvol or simple directory. The remaining disks could be used with zfs too. The different storage types and pro/cons can be found in our pve-admin-guide.