Below are benchmarks on a mirrored 500Gb drive set using Windows 2003 software RAID mirror vs the same drive from the mirror on its own. You can see that the software RAID completly ruins the performance reducing read and write speeds from about 100Mb/s to 15Mb/s You might get some redundancy, but it comes at.
I recently installed Outlook 2007 on a HyperV Windows 2008 R2 server terminal server talking to Exchange 2010 on another HyperV on the same box. The server is a Dual Xeon with RAID 10 SAS drives pumping out 800Mb/s throughput yet Outlook 2007 would take about 8 seconds to open. Rubbish! I found by disabling.
I have setup a couple of gmail accounts for clients as a central repository for various email accounts. Clients have complained they have not received some emails or they have been substantially delayed. Looking at the gmail check mail settings for the pop accounts, sometimes it says mail has been checked 53 minutes ago, or.