Many major vendors now support shared block and file storage in the same array. For SMBs it's really important to think about a unified [or multiprotocol] storage deployment in the SAN, because most small businesses need both block and file data. An iSCSI SAN can be a good solution to optimize an iSCSI storage investment and increase utilization, because so many of them now can serve both file and block-based data.
Check out the entire iSCSI SAN FAQ.
This was first published in May 2008