Western Digital 4TB WD Red Plus 

• Available in capacities ranging from 1-8TB with support for up to 8 bays
• 5400RPM performance class
• Supports up to 180 TB/yr workload rate*| * Workload Rate is defined as the amount of user data transferred to or from the hard drive. Workload Rate is annualized (TB transferred ✕ (8760 / recorded power-on hours))
• NASware firmware for compatibility
• Small or medium business NAS systems in a 24x7 environment
• 3-year limited warranty
• This model uses CMR technology and is being renamed “WD Red Plus” to distinguish it from the current “WD Red” product, which uses SMR technology
• During this transition period, WD Red Plus devices may be delivered with a ”WD Red” label, but rest assured the device you are receiving will be the CMR-version of WD Red and can be confirmed by the model number