Coupled with near-limitless snapshots for data protection the ES2486dc fulfills demanding business applications such as mission-critical file servers virtualization servers VDI medium-sized data center video streaming surveillance storage and efficient file backup and recovery. Multi-level cache technology with read and write support boosts storage performance: The ES2486dc simultaneously supports read caches including primary cache (L1 ARC) SSD cache as a secondary cache (L2 ARC) and write cache ZIL for synchronous transactions to meet performance demands for various enterprise applications. Write coalescing algorithm: Transforms all random writes to sequential writes along with reduced I/O. Not only does it effectively increase random write performance for all-flash environments but also improves SSD lifespan.