Dell PowerEdge RAID Controller S140 User’s Guide

The PERC S140 controller allows:

• Creating virtual disks of different RAID levels on a S140 controller.
  NOTE: Ensure that you do not mix RAID levels on the same physical disks.
• Building different virtual disks with different characteristics for different applications.
• Creating virtual disks from a mix of NVMe PCIe SSD 2.5-inch SFFs and NVMe PCIe SSD adapters.

The PERC S140 controller does not allow:

• Creating a virtual disk from a mix of different types of physical disks. For example, a RAID 10 virtual disk cannot be created from two SATA HDD physical disks and a SATA SSD physical disk. All of the physical disks must be of the same drive type (HDD/SSD/NVMe PCIe SSDs).
• Selecting a physical disk as a dedicated hot spare if the physical disk is a different type from the physical disk of the virtual disks.

A virtual disk refers to data storage which a controller creates using one or more physical disks.

The capacity of a virtual disk can be expanded online for any RAID level without rebooting the operating system.