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How to Say "backup" in Spanish

The most common Spanish word forbackupis refuerzosuse 'refuerzos' when you need to talk about additional people or resources sent to support a group, especially in military, police, or sports contexts..

English → Spanish

refuerzos

/reh-FWEHR-sos//reˈfweɾsos/

nounB1general
Use 'refuerzos' when you need to talk about additional people or resources sent to support a group, especially in military, police, or sports contexts.
A storybook illustration showing three soldiers marching toward a small group of two soldiers already positioned, symbolizing arriving military aid.

Examples

El equipo de rescate pidió refuerzos para llegar a la cima de la montaña.

The rescue team asked for reinforcements to reach the mountain summit.

El general solicitó refuerzos inmediatamente después del ataque.

The general requested reinforcements immediately after the attack.

La policía envió refuerzos para controlar la manifestación.

The police sent backup (or reinforcements) to control the demonstration.

Llamaron a los bomberos pidiendo más refuerzos de agua.

They called the firefighters asking for more water support.

Always Plural in This Context

When talking about troops or personnel sent to help, 'refuerzos' is almost always used in the plural, even if English might use a singular word like 'backup'.

respaldo

rehs-PAHL-doh/resˈpaldo/

nounB2general
Use 'respaldo' specifically when referring to a copy of digital files or data, like a computer backup or a cloud backup.
A small external hard drive connected to a glowing computer folder.

Examples

Hice un respaldo de todos mis documentos importantes antes de formatear el disco duro.

I made a backup of all my important documents before formatting the hard drive.

No olvides hacer un respaldo de tus fotos en la nube.

Don't forget to make a backup of your photos in the cloud.

Backup: Personnel vs. Data

The most common mistake is using 'refuerzos' for digital copies or 'respaldo' for extra people. Remember: 'refuerzos' are people or teams, while 'respaldo' is a digital copy.

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