Which EMC block-level storage virtualization product enables hosts from two different data centers
to access a single copy of data?
A.
VPLEX
B.
VMAX
C.
VNX
D.
Vblock
Explanation:
EMC VPLEX
EMC VPLEX is the next-generation solution for block-level virtualization and data mobility both
within and across datacenters. The VPLEX appliance resides between the servers and
heterogeneous storage devices. It forms a pool of distributed block storage resources and enables
creating virtual storage volumes from the pool. These virtual volumes are then allocated to the
servers. The virtual-to-physical-storage mapping remains hidden to the servers.
VPLEX provides nondisruptive data mobility among physical storage devices to balance the
application workload and to enable both local and remote data access. The mapping of virtual
volumes to physical volumes can be changed dynamically by the administrator.
VPLEX uses a unique clustering architecture and distributed cache coherency that enable multiple
hosts located across two locations to access a single copy of data. VPLEX also provides the
capability to mirror data of a virtual volume both within and across locations.
This enables hosts at different data centers to access cache-coherent copies of the same virtual
volume. To avoid application downtime due to outage at a data center, the workload can be
moved quickly to another data center. Applications continue accessing the same virtual volume
and remain uninterrupted by the data mobility.
The VPLEX family consists of three products: VPLEX Local, VPLEX Metro, and VPLEX Geo.
EMC VPLEX Local delivers local federation, which provides simplified management and
nondisruptive data mobility across heterogeneous arrays within a data center. EMC VPLEX
Metro delivers distributed federation, which provides data access and mobility between two
VPEX clusters within synchronous distances that support round-trip latency up to 5 ms. EMC
VPLEX Geo delivers data access and mobility between two VPLEX clusters within asynchronous
distances (that support round-trip latency up to 50 ms).
EMC E10-001 Student Resource Guide. Module 5: Fibre Channel Storage Area Network (FC
SAN)