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