240 The Green and Virtual Data Center
Balance exposure risk during drive rebuild with appropriate RAID
levels.
Design for fault containment or isolation, balancing best practices
and technology
8.8 Storage Virtualization—Aggregate, Emulate, Migrate
There are many different forms of storage virtualization, including aggrega-
tion or pooling, emulation, and abstraction of different tiers of physical
storage providing transparency of physical resources. Storage virtualization
can be found in server software bases, network or fabric using appliances,
routers, or blades with software in switches or switching directors. Storage
virtualization functionality can also be found running as software on appli-
cation servers or operating systems, in network-based ...