Data Protection
Split Mirrors
Split Mirror Advantages
• Split mirrors are a relatively “impact-free” replication
technique
• Requires additional storage for each volume
• Enable fast fault recovery with 100% copy of data
• Can only be used locally within a given array
Pros Cons
No impact on application Consumes more
performance capacity
No use of SAN No protection against
bandwidth Storage Subsystem
failure
Fast recovery with 100%
copy of data
At this point, it’s very fast recovery because it is a 100% copy of our data, it’s
used within our given subsystem, there’s no impact on application
performance, no use of SAN bandwidth. It protects against data corruption but
the downside is it consumes more capacity, because the split mirror has to be
equal as far as our usable storage capacity is concerned.