The ELS 7.3 enhancements consist of the following:
VSM 6 32GB VTVs. In addition to existing VTV sizes, ELS 7.3 supports VSM 6 32GB VTVs.
XAPI Security. ELS 7.3 implements authentication using a challenge/response protocol to authenticate individual XAPI client/server transactions. If XAPI security protocol is implemented in both client and server, the server can trust client identity, for example, VM Client 7.3 and SMC 7.3. If XAPI security protocol is implemented in server but not client, the server can use XCLIENT command to exclude clients from XAPI Security. For example, VM Client 7.2 and SMC 7.3.
SMC now supports an XAPI client interface to an ACSLS server (Release 8.4 or later) with the XAPI service enabled.
The XML API (XAPI) is Oracle's StorageTek API that enables StorageTek clients and servers to communicate using a common protocol over TCP/IP.