Easy M.2 SSD installationDual M.2 slots for NVMe SSDs for SSD Caching.The Lockerstor 2 is the first two bay NAS with integrated M.2 SSD slots.*M.2 2280 cards supported with installed mounting holes.Two Bays with Two M.2 SSD Slots for Flexible Cached StorageThe Lockerstor 2 is a cost-effective high capacity NAS designed for enterprise environments. The Lockerstor 2 is flexible, supporting online capacity expansion and replacement. Online capacity expansion enables you to replace hard drives inside the NAS without downtime. If your budget and/or storage requirements are small, the Lockerstor 2 enables your NAS to grow alongside your needs by first purchasing smaller drives and then add more drives as you need. Additional drives can be purchased as your storage requirements grow and all drives can be fully replaced while continuing to use your NAS. Combining this with ASUSTOR’s MyArchive cold storage technology enables you to store a virtually unlimited amount of information. 24/7 Reliability and DurabilityAll ASUSTOR NAS are designed for and are suitable for 24/7 use. ASUSTOR NAS devices have also undergone rigorous tests, such as drop tests and burn tests to test durability in extreme conditions. Heatsinks were added to sensitive components to dissipate heat, helping to maintain the longevity of the device.Protected From the Inside and OutProtect your data from loss, damage and attacks with the Lockerstor 2. A Lockerstor 2 is better protected by running the Linux-based ADM, employing a built-in firewall, ClamAV Antivirus, MyArchive and ADM’s various backup tools help protect ransomware even better.Wake Up From AnywhereThe Lockerstor 2 and 4 feature Wake on WAN technology. No specialized equipment or settings are needed to wake the NAS. Simply use ASUSTOR’s wide variety of mobile apps, including but not limited to AiMaster, AiMusic, AiVideos and AiData to turn the NAS on or off remotely. Wake on WAN helps protect data by keeping the NAS powered off when not in use; thereby helping to prevent attacks, protects data integrity by remaining powered off during power failures and Wake on WAN also saves electricity, making for an even more efficient NAS.