What types of data and protocols are supported?
SAN and NAS systems cater for different types of data and usage. SAN storage is very good at supporting highly transactional environments such as Databases and systems requiring random read / write access to blocks of data, particularly where the number of individual I/O requests is very high. NAS is traditionally used to support groups of users who require file level access to sequential data such as back office documents, Word, Excel, PowerPoint etc. Scale-out NAS systems usually support NAS protocols, CIFS (windows file sharing), NFS (Linux / Unix file sharing) and HTTP / Webdav . Isilon IQ comes licensed for all of these protocols and is designed to support large un-structured file data like documents, images, video and web content etc. It currently does not support block protocols such as FC and ISCSI but can be used for database / email and other more block orientated applications when used as NFS storage behind VMware or similar server virtualisation technologies.