I'm not 100% sure as I do not run a xp24000. But, Remote Copy is a feature
a lot of SANs support and since they are both HP products. I'm sure there
is some way of replication available between the two.
Unless HPE did something behind the scenes I do not know about...no it wont. In fact, most vendors don't support replication to another vendor. HPE does have an import tool called Peer Motion if you are looking to import data from the HDS (XP). Just have to make sure you check compatibility.
Other than that, if you are virtual, use the hypervisor's products to move the data seamlessly.
It could be possible, but I doubt it, especially considering the age of the XP line of arrays. I’ve never given it a shot. HP have means to migrate off the EVA line and other 3PAR products to 3PAR, but I’ve not seen one for the XP line. Your account manager should be able to provide further guidance, if necessary.
HPE StoreServ cannot replicate natively to XP, no. Host-level migration
using tools such as VSphere Storage vMotion, Vision DoubleTake, etc can be
done. HPE StoreServ supports Online Import *from* a number of other
products (HP EVA, several EMC and HDS products, more on roadmap).