1.All our server cPanel solo uses SSD harddisk
2.We may not see SSD disk while trying to identify harddisk type using various linux commands. The stated below is one such example.
cat /sys/block/vdb/queue/rotational
1
Generally If the value is 0, you’re dealing with an SSD, and 1 means plain old HDD. However, actual harddisk at Oryon is SSD. The reason why you are seeing that the disk is rotational is due to some quirks of Virtualization. Disks starting with ‘vd’ (such as vda) are often virtualized, and don’t actually ‘exist’. They use a particular driver that is commonly used by KVM based on virtualization solutions and it doesn’t report the correct value of the underlying storage, as the underlying storage is often something like a RAID array or a network share.