belt and braces
belt and suspenders
redundancy
failover
antiredundancy
stripe
incremental backup
redundant array of independent disks
restore
fault tolerance
backup
redundant
have two strings to one's bow
Peterson's algorithm
normalize
fail over
autobackup
coefficiency
refunnel
failback
false sharing
critical load
single point of failure
leak
fault-tolerant
connectionless
selective collection
fallback
Byzantine fault tolerance
redeployable
renewable
denormalized
nodulizing
shoot one's bolt
renew
rolling backup
pessimistic
restructurable
replicational
compatibility
reprocessability
chop and change
mergeable
interoperate
image copy
unruin
fail-safe
three Rs
zero-life
replicatively