Give it your tough workloads WD Red SSD\'s superior endurance can handle the heavy read and write loads demanded by NAS, giving you the reliability you need in a 24x7 environment. Access big files fast WD Red SA500 NAS SATA SSD storage is optimized for caching in NAS systems to rapidly access your most frequently used content. Work more efficiently Purpose-built for NAS with proven Western Digital 3D NAND, the WD Red SSD delivers maximum SATA performance to boost your productivity and effectiveness at home or in the office. Use it for your demanding applications The drive reduces latency and improves responsiveness for OLTP databases, multi-user environments, photo rendering, 4K and 8K video editing and more. Customize your NAS system The WD Red SSD comes in 2. 5\" and M. 2 form factors with capacities ranging from 500GB up to 4TB (2. 5\" only), so you can upgrade your existing NAS system or design a new one from scratch.