If you mean " will Sun support bigger disks? " the answer is no, only options listed in the SSH are supported by Sun. On the other hand if this is a non contract unsupported array then you may be able to run bigger drives. Noted issues might be temperature, the 5200 is a compact array, it bunches many drives into the enclosure so you may find extremely high temperatures on disks in the center of each backplane.
Some points I forgot to mention earlier: the temperature can be monitored via the fpm, there are firmware differences on the non Sun fibre channel drives and you may experience strange performance with standard ufs mounts with these drives. Additionally try to make sure all the drives have the same firmware revision, you will experience performance degradation on JBOD loops that have odd firmware revisions on the drives. There have been a few discussions on this topic in the past, try a forum search.