Well, technically a MetaLUN is only one LUN.  What I think you're asking is, "Can I create a MetaLUN with two components, one based on 1 TB SATA drives, and the other on 2 TB SATA drives?"  The answer to this question is "Yes", by using a concatenated MetaLUN.  The whitepaper EMC CLARiiON MetaLUNs: A Detailed Review explains how to do this and the implications.  EMC CLARiiON MetaLUNs is downloadable from Powerlink.
Hi Guys, Is it possible to create a metalun with one LUN on 1TB SATA and second on 2TB SATA? My intial reaction on this is why not, but keen to see what the actual answer is and it is better to have the disks all the same size.  Thanks Dougie
metaLun