Linux: How to distinguish SAN disk from local disk and also the type of SAN disk.

[unix syzadmin]

Hi,

We have RHLE AS3 running on Dell servers.
We have not used any multipath software and seems like there is SAN storage
presented.

Please suggest / recommend how I will be able to distinguish a local disk
from SAN disk.
Also is there any command that can be used to query the disk attributes and
determine the kind of SAN (EMC, Hitachi etc).

Thanks