When deferred writing is enabled, SuperCache 3 accelerates disk writes. With deferred writing, write requests are fulfilled immediately by simply writing the data to the cache. Later, SuperCache 3 writes the data to the hard disk. Deferred writing is also known as lazywriting, since the write data stored in the cache is 'lazily' written to the disk afterward.

The effect of deferred writing is to 'smooth out' I/O activity on the hard drive. Applications and services with large flows of write data will especially benefit from deferred writing.

It is important to note that enabling deferred writing increases the risk of data loss in the event of a system crash or power failure. SuperSpeed Software recommends that you enable the lazy-write feature ONLY on systems equipped with an Uninterruptible Power Supply (UPS).

Support for NUMA

Windows Server 2003 SP1 and later operating systems provide special support for machines with a non-uniform memory architecture (NUMA). When active on such platforms, the memory manager for SuperCache 3 examines the processor and memory affinities reported by Windows and the ACPI SRAT, and then optimizes physical memory allocations across the described NUMA nodes. The NUMA support in SuperCache 3 greatly improves the speed of memory allocations and equalizes the distribution of cache allocations among the NUMA nodes. Currently, NUMA support does not include the ability to build caches on specific nodes.