Having received a new notebook, now is the time to think about your disaster recovery plan. Raid 0 shares information between two drives and it is not possible to replace a single drive of this pair, when for example: reached end of life, want to increase storage capacity, etc. If you have a single fast or ultra fast PCIe NVMe card as your OS (C:) drive, there are no home user gaming discernible performance benefits in having two NVMe drives in Raid 0 configuration. This has Three M.2 slots, Two M.2 2230/2280 and One M.2 2230 slot for solid-state drives (see image). It is good for users to know that the Dell warranty works and in your instance Dell provided an upgrade to an Alienware m15 R3.