The average corporate e-mail user processes about 18 MB of data every day, and, that number is expected to climb to 28 MB a day by 2011, according to the Radicati Group's recent E-mail Archiving Market Research Report. While e-mail servers can handle large volumes of messages, storing so much data can be quite the challenge.
The storage problem has led to "purge policies" that demand old e-mails be deleted, but end users often find mailbox size restrictions quite limiting. Many of these solutions are far from ideal. Not only do they add another burden to the IT admin's back, they can also add more fees to the corporate budget. To complicate matters even further, today's IT administrators also need to ensure that their e-mail storage solutions are keeping their company in compliance with government regulations.
Source: CIO Today, http://www.cio-today.com