reinforcements
A copy of a file or record, stored separately from the original, that can be used to recover the original if it is destroyed or damaged.
A reserve or substitute.
An accumulation of material caused by a (partial) obstruction or (complete) blockage of the flow or movement of the material, or an accumulation of material that causes an overflow due to the flow being greater than the maximum possible flow.
Supporting, reinforcing; (music) of or related to accompaniment
Standby, reserve or extra.
That is intended as a backup.
An individual brought in at short notice to replace a member of staff, a player in a sporting team, etc.
Arising from or used in an emergency.
A situation which poses an immediate risk and which requires urgent attention.
The department of a hospital that treats emergencies.