I assume you use the SANs for VMWare storage? Also don't forget I am looking for a NAS not a SAN although I have always wanted fibre channel storage
infact thinking about it, most decent NAS devices these days have iSCSI, you can mix multi RAID configs and have LUN masking so its starting really get quite muddy between SAN and NAS.
Also can you resize a LUN these days or are they still none dynamic?