Multiple SEPM for same clients

Hi there,

my client wants to have highly available SEPM for his1000 clients.

Is it possible to have 

1. 2 SEPM  with embedded DB managing all 1000 clients, so SEPM A sees all 1000 clients, the same as SEPM B

2. or have 2 SEPM's pointing to a clustered database.

Thank you.