Optimize Server Performance

PerfectCache implements patented block-level caching technology to raise system performance beyond that of the Windows file-level cache alone. PerfectCache breaks the disk I/O bottleneck by using the server's system memory to store the most frequently used data, executing read and write requests from memory rather than from disk. PerfectCache's core component is a storage volume filter driver which resides in the storage stack just above the storage volume class drivers.

Beyond Windows File-level Cache

The Windows operating system supports a file-system level cache. However, the flow of data at the file-system level and the flow of data at the block (or storage volume) level are not the same. Each level – the file-system level and the block level – represents a different data flow paradigm, or model. Optimization of flows at the file system level does not optimize flows at the block level. PerfectCache enhances disk I/O throughput by optimizing flows at the block-level.

How It Works

PerfectCache intelligently stores frequently used disk data in system memory. The memory used to store the data is called a cache. PerfectCache intercepts requests for disk data and, when possible, fulfills the request using the cache instead of requesting data from the disk. When data is read from or written to the cache, the performance is similar to a RAM disk – extremely fast.

Deferred Writes

PerfectCache accelerates disk writes. With deferred writing, write requests are fulfilled immediately by simply writing the data to the cache. Later, PerfectCache 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.