Best Practice to Add Secondary Disk/Node

Giorgio

New Member
Jun 5, 2016
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Hi to everyone,
i have a Proxmox server with a scsi disk (/dev/sda) where i need to add a secondary SSD disk (/dev/sdb) to have both.

the entire root is in first disk so SDA.
i already know how to attach a new ext4 disk to the root as below
Code:
#mount -t ext4 /dev/sdb1 /mnt/ssddisk
#/dev/sdb1 /mnt/ssddisk ext4 defaults,errors=remount-ro 0 1

and that's ok but after that what??.
What i'd like to know is to understand what is the best practice to add this SSD. What i need as a must is to move some VM from first disk (SDA) to the second (SDB) and so they will both from that.
another question: ext4 is the best choice or i have to choose xfs or different file system?

so help me to make the correct choice because this PVE server is using and i don't want reinstall all by mistake.

if you need some other information just write me and i will add all that you need.
thanks so much in advance for your help!