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What is Disaster Recovery (DR)?

Disaster Discovery(DR) is for regaining access and functionality of the organization's services and IT infrastructure after the event of Natural Disaster, equipment failure or cyber-attack. It relies on the replication of data at a secondary location which is not affected by the disaster. In an event of a server down because of any kind of disaster, the data will be recovered from the secondary location where there is backed up.

Why is it Important to have DR?



After an event of a disaster, with Disaster Recovery in place, the business can resume work quickly and reduce the interruptions I business operation. It is important to have DR in place for business continuity, IT recovery and also to prevent data loss.

What is Technology Require for DR?



On-premise DR

  • 1. Backup Tape / Disk
    Tape are used for backing up data by copying contents from their storage devices and can be stored offsite. In case if there is a backup disk failure or data gets deleted, missing data can be restored back from tape to live storage. Disk back up data on a computer's hard disk to another disk in storage and it is much easier and faster than tape to restore specific files from in the event of a disaster

  • 2. Deduplication (Local replication)
    Data deduplication reduces the amount of storage capacity required for backup by eliminating duplicate files. Deduplication works by ensuring that only the first unique instance of a piece of data is retained and replace the subsequent iterations of the data with a pointer to the original.

  • 3. Snapshots
    Snapshots are copies of data from a source to a target system at pre-set points like every 10 minutes or every one hour as preferred and will be able to restore the system to the point where the last copy took place.

  • 4. Failover
    Failover is a way of configuring servers to standby as secondary for taking over from primary ones in the case of failure by any kind of disaster. The method is efficient and quicker; however, the cost of implementation is higher.

Off-site DR
  • 1. Offsite Replication (Site-to-Site)

    Having a full backup of server from primary site that replicates to a secondary site or Data Centre to ensure full data and server configuration retained and able to bring up in the event primary site is not able to work.


For more inquiries on how to enable Disaster Recovery protection in your workplace, please contact us either via our hotline at 6295 9562 or email us at info@achievement.com.sg.

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