StarWind Virtual SAN L1 and L2 caches. Operational principles
The technical paper reveals StarWind approach to L1 and L2 cache memory, which is using RAM for L1 cache and flash memory for L2 cache. This speeds up the processing of disk requests. Also, the document describes basic write-back and write-through cache policies and provides recommendations on policy choice for the sake of the highest performance. StarWind recommends to use L1 cache in write-back mode and L2 in the write-through mode respectively to achieve high performance and additional protection.