Not at this time.
However, when it comes to network "disk" like SAN, the connectivity to the disk is a more important then Disk IO ability, not saying that you should use an old IDE disk
NAS using Windows File System (NTFS) and SMB/CIFS for communication is perfectly fine, such as Windows Storage Server 2012 (or just a share on any Windows machine will do).
Important thing to remember is that other files systems except NTFS, such as ext2-4, ZFS, exFAT etc, are not supported.
Same goes for communication protocol. Only SMB/CIFS is supported, not NFS, AFP, NCP or similar.