NAS:
Network-attached storage (NAS) systems are networked appliances that contain one or more storage drives, often arranged into logical, redundant storage containers or RAID. The key advantage of NAS is its ability to provide multiple clients on the network with access to the same files.
Server:
A server consists of a computer or device that manages network resources. The server is responsible for backing up and restoring files, folders, databases and hard drives on a network in order to prevent the loss of data in the event of a hard drive failure, user error, disaster or accident.
Cloud:
Cloud storage is the process by which data is remotely maintained, managed and backed up on multiple virtual servers and ultimately made available to users over the Internet. Rooted in highly virtualized infrastructure, cloud storage is responsible for keeping your data available and accessible anytime, anywhere, while not necessarily being locally present in your own premises.
Tape:
Tape backup remains a vital part of the IT data protection infrastructure today, providing users with the ability to periodically copy designated data from its storage device to a tape cartridge device to insure that it won’t be lost following a hard disk crash or any failure of the same type.
Disaster Recovery:
An IT disaster recovery plan is the all-inclusive documentation of strategic actions/measures that should be adopted following a catastrophic event, be it natural or human-induced. It practically involves a set of policies and procedures that enable the maintenance and recovery of vital technology infrastructure and systems after a disaster.