Smaller Footprint For Bigger Opportunities Small footprint makes the TS-431 Xe U an excellent choice for smaller racks & the unused space can be reserved for cabling or ventilation. The TS-431 Xe U is space-saving for flexible deployment & is especially suitable for multiple locations & applications including offices audiovisual rooms & security surveillance recording. SSD Cache Acceleration The TS-431 Xe U supports SSD caching to greatly boost the IOPS performance of storage volumes to increase operational efficiency. High Reliability Design Ensuring Business Continuity The business-ready TS-431 Xe U is designed to provide 24/7 operations & services. The support for comprehensive RAID configurations & hot-swapping allow for replacing hard drives without service interruption. QNAP's advanced RAID recovery technology also helps if any healthy drives are accidentally removed from a degraded RAID volume. Easily Expand Storage Capacity The TS-431 Xe U's storage capacity can be expanded as needed to meet the demands of rapidly-growing data making it ideal for storage-intensive applications such as video surveillance data archiving TV broadcast storage & more..