Indexing Service is no longer supported as of Windows XP and is unavailable for use as of Windows 8. Instead, use Windows Search for client side search and Microsoft Search Server Express for server side search.
The PropertyStoreBackupSize entry determines the number of system pages held on disk to back up the primary property cache.
||1024 (x86 processors),
512 (RISC processors)
||32 - 500000 (x86 processors),
16 - 250000 (RISC processors)
The page size is 4 kilobytes (KB) on x86 (486 and higher) computers and 8 KB on RISC (Alpha) computers. The larger the page file, the less often the property cache needs to be written to disk. The fewer times you write the cache to disk, the faster indexing proceeds. The range of values of the PropertyStoreBackupSize entry allows the PROPSTOR.BKP file to range in size from about 128 KB to about 2 gigabytes (GB).
The SecPropertyStoreBackupSize entry serves the same function for the secondary property cache.