SuperCache can use 25 to 75 percent of physical memory as a cache for a single disk partition. Windows NT versions 3.51/4.0 and 2000 are supported. It is recommended that at least 24 MB of main memory for minimal use of SuperCache. SuperCache automatically allocates and deallocates memory from it’s cache depending on system usage. A maximum of 2.0 GB can be used as a cache. The cache will automatically grow and contract based on user activity and memory requirements for other applications. Both FAT and NTFS file systems are supported.
Using the BackOffice Magazine benchmark software on an Alpha 21164 300 MHz uniprocessor system, native Windows NT caching showed throughput of 3.8 MB per second, while the same disk cached with SuperCache-NT in lazy write (write-back) mode showed a transfer rate of 70 MB per second. Results on your system may vary.
SuperCache dynamically caches any disk partition. The system manager selects which partition is to be cached using the setup tool ScConfig.exe. The partition may be either NTFS or FAT.
During setup, the system manager selects either write through mode or lazy write mode. When the system is re-booted SuperCache is automatically started on the selected partition and immediately allocates 25 percent of the physical memory in user space to the cache. The cache will grow on demand. SuperCache has a built-in mechanism for automatically returning memory to the rest of Windows NT/2000 when the operating system requires it for other uses. This operation is automatic and transparent to the rest of the system.
In Write Through Data Protection Mode, SuperCache writes data synchronously to the Windows lazy write mechanism. If a power failure or system failure were to occur in this mode of operation, data would be protected from loss just as it would be without SuperCache being loaded.