Mirrorview Features And Benefits - EMC CX700 Planning Manual

MirrorView Features and Benefits

CLARiiON Environment
Provision for Disaster Recovery with Minimal Overhead
MirrorView mirroring adds value to customer systems by offering
the following features:
Provision for disaster recovery with minimal overhead
CLARiiON environment
Bidirectional (cross) mirroring
Integration with EMC SnapView LUN snapshot and clone copy
software
MirrorView operates in a highly available environment, leveraging
the dual-SP design of CLARiiON storage systems. If one SP fails,
MirrorView running on the other SP controls and maintains the
mirrored LUNs. If the server is able to fail over I/O to the remaining
SP, then periodic updates continue. The highly-available features of
RAID protect against disk failure, and mirrors are resilient to an SP
failure in the primary of secondary storage system.
Provision for disaster recovery is the major benefit of MirrorView
mirroring. Destruction of the primary data site would cripple or ruin
many organizations. After a disaster, MirrorView lets data processing
operations resume very quickly, often within minutes or a few hours.
MirrorView is transparent to servers and their applications. Server
applications do not know that a LUN is mirrored, and the effect on
performance depends on the distance and application workload.
MirrorView supports up to four connections per storage system,
which means you can use it in a central backup configuration, where
one storage system maintains remote mirrors for as many as four
other storage systems.
MirrorView uses synchronous writes, which means that server writes
are acknowledged only after all secondary storage systems commit
the data. Most disaster recovery systems sold today use this type of
mirroring.
MirrorView runs in storage systems, not on servers, therefore it uses
no host I/O or CPU resources. The additional processing for
mirroring is performed on storage systems.
Data Replication and Data Mobility Software
What Is MirrorView?
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