You can also get this file here:  Intel IRST.  Dell occasionally has trouble with its downloads and drivers page. EDIT:  By the way; someone seems to have noticed the problem as there are now two links to the file on the downloads and drivers page.  The first link appears to work, while the second leads to the page you found originally.
Hardware: XPS 8500, OS: Windows 8, 64bit.  I'm trying to download the latest Intel Rapid Storage Driver (v.11.6.0.1030,A00) for Windows 8 64bit from the Drivers and Downloads page, because the current version installed (version 11.5.0.1207) has a memory leak in the IAStorDataMgrSvc.exe service (it's using nearly 2GB of memory at present, and keeps increasing). The Intel forums suggest updating or reverting the driver.  When I try to download Intel Rapid Storage Driver v.11.6.0.1030,A00, called RST_Intel_W84_A00_Setup-5GPDD_ZPE.exe, the 'Single-file download' option gives the error message: "Sorry, the requested file could not be downloaded.  An internal error occurred. Please try again later."  When I try to download it with the 'Download Manager' option, it gives the error message: "File was corrupted during download."  Please can you advise me how to get a download of this driver?
Win8 64bit Intel Rapid Storage Driver v.11.6.0.1030,A00 download for XPS 8500 
fails